Note: This page contains sample records for the topic engineering deployment engineering from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: August 15, 2014.
1

Launch Deployment Assembly Human Engineering Analysis  

NASA Technical Reports Server (NTRS)

This report documents the human engineering analysis performed by the Systems Branch in support of the 6A cargo element design. The human engineering analysis is limited to the extra vehicular activities (EVA) which are involved in removal of various cargo items from the LDA and specific activities concerning deployment of the Space Station Remote Manipulator System (SSRMS).

Loughead, T.

1996-01-01

2

78 FR 775 - Goodman Networks, Inc. Core Network Engineering (Deployment Engineering) Division Alpharetta, GA...  

Federal Register 2010, 2011, 2012, 2013

...846C; TA-W-81,846D] Goodman Networks, Inc. Core Network Engineering (Deployment Engineering) Division Alpharetta, GA; Goodman Networks, Inc. Core Network Engineering (Deployment Engineering) Division Hunt Valley, MD;...

2013-01-04

3

78 FR 12359 - Goodman Networks, Inc., Core Network Engineering (Deployment Engineering) Division Including...  

Federal Register 2010, 2011, 2012, 2013

...Administration [TA-W-81,846] Goodman Networks, Inc., Core Network Engineering (Deployment Engineering) Division Including Workers in the Core Network Engineering (Deployment Engineering) Division in Alpharetta, GA, Hunt Valley,...

2013-02-22

4

Engineered spacecraft deployables influenced by nature  

NASA Astrophysics Data System (ADS)

Northrop Grumman has been a leader in the space industry for over 50 years, and in fact was the first in the industry to produce a contractor-built spacecraft. Since the dawn of the Space Age and that Pioneer-1 spacecraft, every sub-system that makes up a spacecraft has grown in capability. One of the most visible changes to a spacecraft that enables these enhanced capabilities is the variety of appendages called deployable systems. These systems include solar arrays, antenna reflectors, telescopes and a current design for a tennis court sized sunshield. While the end product may look very different and perform different functions, all deployable systems share certain common attributes. Among these are: a latch mechanism for the deployable restraining it to the spacecraft for launch, an unlatching or release mechanism once orbit is achieved, an energy storage device or driving mechanism for deployment and a re-latching, or sometimes a repositioning device for orientation of the system during the mission. This paper describes these space-based systems and draws some comparisons with various natural analogs. While it may not be the case that the aerospace engineer is attempting to duplicate natural systems, it is almost certain that spacecraft deployable systems have been influenced by nature.

Pohl, David; Wolpert, W. D.

2009-08-01

5

18th Engineer Brigade Validated for Afghanistan Deployment.  

National Technical Information Service (NTIS)

The 18th Engineer Brigade headquarters in Schwetzingen, Germany, completed its validation exercise in February 2011 for deployment to Afghanistan later in the year. The headquarters would deploy off-cycle from its subordinate units, requiring additional c...

K. A. Werback

2011-01-01

6

Historical Analysis of the Development of RED HORSE (Rapid Engineer Deployable, Heavy Operation Repair Squadron, Engineering).  

National Technical Information Service (NTIS)

The purpose of this study was to analyze the historical events leading up to the creation of RED HORSE (Rapid Engineer Deployable, Heavy Operation Repair Squadron, Engineering). The study has two objectives: (1) Capture the decision making rationale for t...

J. A. Wheeler

1987-01-01

7

Cost engineering with quality function deployment  

Microsoft Academic Search

Conventional Quality Function Deployment (QFD) is technically one-sided. Prioritization of technical attributes, if carried out at all, attempts to maximize customer satisfaction without considering the costs incurred. However, product design is usually a techno-economic process, hence there is always a tradeoff between quality goals and limited budgets. Based on a prioritization method suggested by Wasserman [1], this paper integrates design

Jürgen Bode; Richard Y. K. Fung

1998-01-01

8

Intelligent quality function deployment system in concurrent engineering environment  

NASA Astrophysics Data System (ADS)

This paper describes work being undertaken in the development of an intelligent distributed quality function deployment (IDQFD) system, which supports product design team to transfer and deployment the `Voice of Customer' through `House of Quality' into the various stages of product planning, engineering and manufacturing. The requirement modeling of products, the optimization in QFD are indicated. The framework of the system, including QFD tools and platform for distributed collaborative work in QFD, is described. The strategy and methods for the collaboration processing in QFD process are presented. It shows promise for application in practice.

Lin, Zhi-Hang; Che, Ada

1998-10-01

9

Prevention of device-related tissue damage during percutaneous deployment of tissue-engineered heart valves  

Microsoft Academic Search

Background: Endovascular application of pulmonary heart valves has been recently introduced clinically. A tissue-engineering approach was pursued to overcome the current limitations of bovine jugular vein valves (degeneration and limited longev- ity). However, deployment of the delicate tissue-engineered valves resulted in severe tissue damage. Therefore the objective of this study was to prevent tissue damage during the folding and deployment

I. Degenkolbe; T. Attmann; K. Schenke-Layland; S. Freitag; G. Lutter

2010-01-01

10

Systematic Engine Uprate Technology Development and Deployment for Pipeline Compressor Engines Through Increased Torque.  

National Technical Information Service (NTIS)

Three methods were utilized to analyze key components of slow-speed, large-bore, natural gas integral engines. These three methods included the application of computational fluid dynamics (CFD), dynamic modal analysis using finite element analysis (FEA), ...

D. Olsen D. Schmitt

2005-01-01

11

Systematic Engine Uprate Technology Development and Deployment for Pipeline Compressor Engines through Increased Torque  

SciTech Connect

Three methods were utilized to analyze key components of slow-speed, large-bore, natural gas integral engines. These three methods included the application of computational fluid dynamics (CFD), dynamic modal analysis using finite element analysis (FEA), and a stress analysis method also using FEA. The CFD analysis focuses primarily on the fuel mixing in the combustion chamber of a TLA engine. Results indicate a significant increase in the homogeneity of the air and fuel using high-pressure fuel injection (HPFI) instead of standard low-pressure mechanical gas admission valve (MGAV). A modal analysis of three engine crankshafts (TLA-6, HBA-6, and GMV-10) is developed and presented. Results indicate that each crankshaft has a natural frequency and corresponding speed that is well away from the typical engine operating speed. A frame stress analysis method is also developed and presented. Two different crankcases are examined. A TLA-6 crankcase is modeled and a stress analysis is performed. The method of dynamic load determination, model setup, and the results from the stress analysis are discussed. Preliminary results indicate a 10%-15% maximum increase in frame stress due to a 20% increase in HP. However, the high stress regions were localized. A new hydraulically actuated mechanical fuel valve is also developed and presented. This valve provides equivalent high-energy (supersonic) fuel injection comparable to a HPFI system, at 1/5th of the natural gas fuel pressure. This valve was developed in cooperation with the Dresser-Rand Corporation.

Dennis Schmitt; Daniel Olsen

2005-09-30

12

Engineers Jim Murray and Joe Pahle prepare a deployable, inflatable wing technology demonstrator exp  

NASA Technical Reports Server (NTRS)

Engineers Jim Murray and Joe Pahle prepare a deployable, inflatable wing technology demonstrator experiment flown by the NASA Dryden Flight Research Center, Edwards, California. The inflatable wing project represented a basic flight research effort by Dryden personnel. Three successful flights of the I2000 inflatable wing aircraft occurred. During the flights, the team air-launched the radio-controlled (R/C) I2000 from an R/C utility airplane at an altitude of 800-1000 feet. As the I2000 separated from the carrier aircraft, its inflatable wings 'popped-out,' deploying rapidly via an on-board nitrogen bottle. The aircraft remained stable as it transitioned from wingless to winged flight. The unpowered I2000 glided down to a smooth landing under complete control.

2001-01-01

13

Investigating the Quality of Mental Models Deployed by Undergraduate Engineering Students in Creating Explanations: The Case of Thermally Activated Phenomena  

ERIC Educational Resources Information Center

This paper describes a method aimed at pointing out the quality of the mental models undergraduate engineering students deploy when asked to create explanations for phenomena or processes and/or use a given model in the same context. Student responses to a specially designed written questionnaire are quantitatively analyzed using…

Fazio, Claudio; Battaglia, Onofrio Rosario; Di Paola, Benedetto

2013-01-01

14

Engineering task plan for development, fabrication, and deployment of nested, fixed depth fluidic sampling and at-tank analysis systems  

SciTech Connect

An engineering task plan was developed that presents the resources, responsibilities, and schedules for the development, test, and deployment of the nested, fixed-depth fluidic sampling and at-tank analysis system. The sampling system, deployed in the privatization contract double-shell tank feed tank, will provide waste samples for assuring the readiness of the tank for shipment to the privatization contractor for vitrification. The at-tank analysis system will provide ''real-time'' assessments of the sampled wastes' chemical and physical properties. These systems support the Hanford Phase 1B Privatization Contract.

REICH, F.R.

1999-05-18

15

An Approach to Engineer Communities of Web Services: Concepts, Architecture, Operation, and Deployment  

Microsoft Academic Search

This article presents an approach that provides the necessary assistance to those who are in charge of engineering communities of Web services. Current practices indicate that Web services providing the same functionality are gathered into one community, independently of their origins and the way they carry out this functionality. The provided assistance manifests itself with the concepts to use, the

Zakaria Maamar; Sattanathan Subramanian; Philippe Thiran; Djamal Benslimane; Jamal Bentahar

2009-01-01

16

Engineer Girl  

NSDL National Science Digital Library

This engineering website is geared towards girls and young women to encourage and inspire them to pursue careers in engineering. The site includes articles, links, contests, and biographies of current women engineers.

2013-01-01

17

Animated Engines  

NSDL National Science Digital Library

This remarkable Web site contains descriptions and animations of nineteen different kinds of engines. Engine types include internal combustion, steam, and sterling engines, and each page shows how the piston, crankshaft, and other components move together to generate power. The animations demonstrate the processes of intake, compression, and exhaust. Some of the featured engines have more detailed descriptions than others, and oftentimes, a brief account of the engine's history is included. One engine dates back to the early 1700s.

2000-01-01

18

Software-engineering challenges of building and deploying reusable problem solvers.  

PubMed

Problem solving methods (PSMs) are software components that represent and encode reusable algorithms. They can be combined with representations of domain knowledge to produce intelligent application systems. A goal of research on PSMs is to provide principled methods and tools for composing and reusing algorithms in knowledge-based systems. The ultimate objective is to produce libraries of methods that can be easily adapted for use in these systems. Despite the intuitive appeal of PSMs as conceptual building blocks, in practice, these goals are largely unmet. There are no widely available tools for building applications using PSMs and no public libraries of PSMs available for reuse. This paper analyzes some of the reasons for the lack of widespread adoptions of PSM techniques and illustrate our analysis by describing our experiences developing a complex, high-throughput software system based on PSM principles. We conclude that many fundamental principles in PSM research are useful for building knowledge-based systems. In particular, the task-method decomposition process, which provides a means for structuring knowledge-based tasks, is a powerful abstraction for building systems of analytic methods. However, despite the power of PSMs in the conceptual modeling of knowledge-based systems, software engineering challenges have been seriously underestimated. The complexity of integrating control knowledge modeled by developers using PSMs with the domain knowledge that they model using ontologies creates a barrier to widespread use of PSM-based systems. Nevertheless, the surge of recent interest in ontologies has led to the production of comprehensive domain ontologies and of robust ontology-authoring tools. These developments present new opportunities to leverage the PSM approach. PMID:23565031

O'Connor, Martin J; Nyulas, Csongor; Tu, Samson; Buckeridge, David L; Okhmatovskaia, Anna; Musen, Mark A

2009-11-01

19

Investigating the quality of mental models deployed by undergraduate engineering students in creating explanations: The case of thermally activated phenomena  

NASA Astrophysics Data System (ADS)

This paper describes a method aimed at pointing out the quality of the mental models undergraduate engineering students deploy when asked to create explanations for phenomena or processes and/or use a given model in the same context. Student responses to a specially designed written questionnaire are quantitatively analyzed using researcher-generated categories of reasoning, based on the physics education research literature on student understanding of the relevant physics content. The use of statistical implicative analysis tools allows us to successfully identify clusters of students with respect to the similarity to the reasoning categories, defined as “practical or everyday,” “descriptive,” or “explicative.” Through the use of similarity and implication indexes our method also enables us to study the consistency in students’ deployment of mental models. A qualitative analysis of interviews conducted with students after they had completed the questionnaire is used to clarify some aspects which emerged from the quantitative analysis and validate the results obtained. Some implications of this joint use of quantitative and qualitative analysis for the design of a learning environment focused on the understanding of some aspects of the world at the level of causation and mechanisms of functioning are discussed.

Fazio, Claudio; Battaglia, Onofrio Rosario; Di Paola, Benedetto

2013-12-01

20

Engineering Practice and Engineering Ethics.  

ERIC Educational Resources Information Center

Offers ways of applying science and technology studies to the teaching of engineering ethics. Suggests modifications of both detailed case studies on engineering disasters and hypothetical, ethical dilemmas employed in engineering ethics classes. (Author/CCM)

Lynch, William T.; Kline, Ronald

2000-01-01

21

Engineering and Software Engineering  

NASA Astrophysics Data System (ADS)

The phrase ‘software engineering' has many meanings. One central meaning is the reliable development of dependable computer-based systems, especially those for critical applications. This is not a solved problem. Failures in software development have played a large part in many fatalities and in huge economic losses. While some of these failures may be attributable to programming errors in the narrowest sense—a program's failure to satisfy a given formal specification—there is good reason to think that most of them have other roots. These roots are located in the problem of software engineering rather than in the problem of program correctness. The famous 1968 conference was motivated by the belief that software development should be based on “the types of theoretical foundations and practical disciplines that are traditional in the established branches of engineering.” Yet after forty years of currency the phrase ‘software engineering' still denotes no more than a vague and largely unfulfilled aspiration. Two major causes of this disappointment are immediately clear. First, too many areas of software development are inadequately specialised, and consequently have not developed the repertoires of normal designs that are the indispensable basis of reliable engineering success. Second, the relationship between structural design and formal analytical techniques for software has rarely been one of fruitful synergy: too often it has defined a boundary between competing dogmas, at which mutual distrust and incomprehension deprive both sides of advantages that should be within their grasp. This paper discusses these causes and their effects. Whether the common practice of software development will eventually satisfy the broad aspiration of 1968 is hard to predict; but an understanding of past failure is surely a prerequisite of future success.

Jackson, Michael

22

Re-engineering organizations for optimal deployment of smart materials and intelligent devices in civil infrastructure  

NASA Astrophysics Data System (ADS)

Smart materials and intelligent devices are promising to revolutionize data collection in civil infrastructure. However, their application has so far been very limited in scope. So far, there is no comprehensive mechanisms to integrate data generated by smart materials and intelligent devices into the overall IT systems of user organizations. This article outlines a framework for reengineering organizations for optimal utilization of smart materials and intelligent devices in the infrastructure development domain. The aim is to integrate data collection and management into the organizational culture. The framework includes three basic modules: assessing current practice, identifying level of deployment, and defining the needed actions.

El-Diraby, Tamer E.; Beheshti, Arzhang

2002-06-01

23

Web Engineering  

SciTech Connect

Web Engineering is the application of systematic, disciplined and quantifiable approaches to development, operation, and maintenance of Web-based applications. It is both a pro-active approach and a growing collection of theoretical and empirical research in Web application development. This paper gives an overview of Web Engineering by addressing the questions: (a) why is it needed? (b) what is its domain of operation? (c) how does it help and what should it do to improve Web application development? and (d) how should it be incorporated in education and training? The paper discusses the significant differences that exist between Web applications and conventional software, the taxonomy of Web applications, the progress made so far and the research issues and experience of creating a specialization at the master's level. The paper reaches a conclusion that Web Engineering at this stage is a moving target since Web technologies are constantly evolving, making new types of applications possible, which in turn may require innovations in how they are built, deployed and maintained.

White, Bebo

2003-06-23

24

Forensic Engineering  

NSDL National Science Digital Library

The National Academy of Forensic Engineers (1) provides a short definition of forensic engineering as: "the application of the art and science of engineering in matters which are in, or may possibly relate to the jurisprudence system, inclusive of alternative dispute resolution." Specialty areas in forensic engineering include fire investigation, industrial accidents, product liability, traffic accidents, civil engineering and transportation disasters, and environmental systems failures. For example, forensic engineers investigate structural collapses, such as the 2004 Paris Airport collapse described in this article from the Institution of Structural Engineers (2) This website from Materials Evaluation and Engineering, Inc. (3) points out that materials engineering is useful in product failure analysis because many products fail due to materials problems. Given the role forensic engineers play in legal disputes, research in forensic engineering is also a topic on this engineering ethics website (4). Forensic-Evidence.com (5 ) offers The Forensic Center Newsletter, which aims "to stimulate interdisciplinary efforts and research that unite, explore, and advance knowledge in the broad areas of law, medicine, and forensic sciences." This website from the Engineering Forensics Research Institute provides some examples of current research in forensic engineering (6). Finally, Glendale High School offers this Civil Structures Module (7) as a resource for teaching about topics related to forensic engineering, using the 1981 Kansas City Hyatt Regency walkway collapse as an example for analysis.

25

NuSTAR: system engineering and modeling challenges in pointing reconstruction for a deployable x-ray telescope  

NASA Astrophysics Data System (ADS)

The Nuclear Spectroscopic Telescope Array (NuSTAR) is a NASA Small Explorer mission that will make the first sensitive images of the sky in the high energy X-ray band (6 - 80 keV). The NuSTAR observatory consists of two co-aligned grazing incidence hard X-ray telescopes with a ~10 meter focal length, achieved by the on-orbit extension of a deployable mast. A principal science objective of the mission is to locate previously unknown high-energy X-ray sources to an accuracy of 10 arcseconds (3-sigma), sufficient to uniquely identify counterparts at other wavelengths. In order to achieve this, a star tracker and laser metrology system are an integral part of the instrument; in conjunction, they will determine the orientation of the optics bench in celestial coordinates and also measure the flexures in the deployable mast as it responds to the varying on-orbit thermal environment, as well as aerodynamic and control torques. The architecture of the NuSTAR system for solving the attitude and aspect problems differs from that of previous X-ray telescopes, which did not require ex post facto reconstruction of the instantaneous observatory alignment on-orbit. In this paper we describe the NuSTAR instrument metrology system architecture and implementation, focusing on the systems engineering challenges associated with validating the instantaneous transformations between focal plane and celestial coordinates to within the required accuracy. We present a mathematical solution to photon source reconstruction, along with a detailed error budget that relates component errors to science performance. We also describe the architecture of the instrument simulation software being used to validate the end-to-end performance model.

Harp, D. Isaiah; Liebe, Carl Christian; Craig, William; Harrison, Fiona; Kruse-Madsen, Kristin; Zoglauer, Andreas

2010-07-01

26

Chemical engineer  

NSDL National Science Digital Library

What do chemical engineers actually do? This is the introductory page for a set of materials about chemical engineering as a career. Here the job of a chemical engineer is defined and described. Chemical engineers often work with industrial manufacturing processes that involve a mix of chemistry and engineering. In the rest of the resource, students can examine a specialized job title associated with chemical engineering: process engineer. Students can view a five-minute video clip of the process engineer as he works in a fertilizer plant making ammonia and urea. Students follow the engineer around the plant as he checks pressure in chemical lines. Students get a glimpse of the inside of a furnace during the chemical-making process. Copyright 2005 Eisenhower National Clearinghouse

Project, Iowa P.

2002-01-01

27

Computer Engineers.  

ERIC Educational Resources Information Center

Looks at computer engineers and describes their job, employment outlook, earnings, and training and qualifications. Provides a list of resources related to computer engineering careers and the computer industry. (JOW)

Moncarz, Roger

2000-01-01

28

Biochemical Engineering.  

ERIC Educational Resources Information Center

Biochemical engineering as a scientific discipline is becoming accepted in England and is drawing many young men and women to its ranks. This article focuses on how engineering came to embrace the biological sciences. (Author/SA)

Dunnill, P.

1979-01-01

29

Search Engines  

Microsoft Academic Search

If you want to find anything on the World Wide Web (WWW), you need to know about search engines. Hitherto, both Internet sceptics and ‘technophobes’ have criticised the various search engines for having the same failings as the WWW itself: that the overall quality and relevance of sites are poor. After all, what search engines retrieve for you is merely

Rustam Al-Shahi

2001-01-01

30

Genome engineering  

Microsoft Academic Search

For more than 50 years, those engineering genetic material have pursued increasingly challenging targets. During that time, the tools and resources available to the genetic engineer have grown to encompass new extremes of both scale and precision, opening up new opportunities in genome engineering. Today, our capacity to generate larger de novo assemblies of DNA is increasing at a rapid

George M Church; Peter A Carr

2009-01-01

31

Systems Engineering  

Microsoft Academic Search

Each year at the National Council of Systems Engineering (NCOSE) symposium lots of dedicated people spend a lot of energy assessing, measuring and educating people about an incomplete body of knowledge (systems engineering). The incompleteness is due to the lack of a definition of what that body of knowledge is supposed to cover. Now every systems engineer knows that it

Joe Kasser

1969-01-01

32

Engine Lubricant  

NASA Technical Reports Server (NTRS)

PS 212, a plasma-sprayed coating developed by NASA, is used to coat valves in a new rotorcam engine. The coating eliminates the need for a liquid lubricant in the rotorcam, which has no crankshaft, flywheel, distributor or water pump. Developed by Murray United Development Corporation, it is a rotary engine only 10 inches long with four cylinders radiating outward from a central axle. Company officials say the engine will be lighter, more compact and cheaper to manufacture than current engines and will feature cleaner exhaust emissions. A licensing arrangement with a manufacturer is under negotiation. Primary applications are for automobiles, but the engine may also be used in light aircraft.

1993-01-01

33

Aircraft Engines  

NSDL National Science Digital Library

Presented by Florida International University and NASA, this website presents a brief tutorial on the schematics for different car and aircraft engines, their cooling mechanisms, and engine development history. Here, visitors will find information on air-breathing, turboprop, turbofan, prop-fan, and ramjet engines along with handy and clear illustrations of each. This is a useful resource for educators looking for a brief, introductory handout for students in mechanical engineering and aeronautics or for students seeking material to simply illustrate the differences between engine types.

2007-07-16

34

Engineering Writing/Writing Engineering.  

ERIC Educational Resources Information Center

Examines the writings of an engineer employed by a large manufacturing firm. Argues that the engineer's writing, although not the final product, is the essential means by which the product is created. Suggests that, because a report reflects final, agreed-upon knowledge about a product, the product and the document become one in the engineer's…

Winsor, Dorothy A.

1990-01-01

35

Engineer Girl!  

NSDL National Science Digital Library

Operated by the National Academy of Engineering, Engineer Girl is a Web site that increases awareness of the opportunities that exist in this profession for women and girls. There is a lot of material covered on the site that will give anyone a good understanding of what engineering is and why it is important. Information about the many different disciplines within engineering are explained in such a way as to spark interest in girls. Tips that will help girls orient their education toward engineering are also included, like what classes to take, how to prepare for college, and how to get scholarships. Some links to other useful Internet resources are scattered around the site, as well as some interesting facts about women and engineering.

2001-01-01

36

Invisible Engineers  

NASA Astrophysics Data System (ADS)

Questionnaire to ask “mention three names of scientists you know” and “three names of engineers you know” was conducted and the answers from 140 adults were analyzed. The results indicated that the image of scientists is represented by Nobel laureates and that of engineers by great inventors like Thomas Edison and industry founders like Soichiro Honda. In order to reveal the image of engineers among young generation, questionnaire was conducted for pupils in middle and high schools. Answers from 1,230 pupils were analyzed and 226 names mentioned as engineers were classified. White votes reached 60%. Engineers who are neither big inventors nor company founders collected less than 1% of named votes. Engineers are astonishingly invisible from young generation. Countermeasures are proposed.

Ohashi, Hideo

37

Try Engineering  

NSDL National Science Digital Library

Admittedly, Dilbert and his fellow engineers haven't boosted the image of the engineering profession, but the website "TryEngineering" succeeds at making engineering seem a little cooler. Visitors will note that the site is sponsored by IBM, IEEE, and TryScience, and it provides information for parents, students, teachers and counselors. The "Lesson Plans" link "provides tips on how lessons can be integrated with other subject areas and offers background information on engineering and engineering careers." Visitors can search the lesson plans by age range, category or keyword, and there are over 100, so there is bound to be more than one that is of interest. Some of the lessons include "Can You Canoe?", "A Century of Plastics", and "Build Your Own Robot Arm". The "Play Games" link offers visitors such fun as "Solar Car Racing", "Roller Coaster Designer" and "Design a Parachute".

38

Teaching Engineering  

NSDL National Science Digital Library

Purdue University has one of the strongest schools of engineering in the United States, and they remain committed to providing new and interesting materials about the art and science of teaching engineering to their students. Professors Phillip C. Wankat and Frank S. Oreovicz recently created this very helpful textbook to aid engineering educators in the classroom, and it is exciting to see that it is available online here for free. Visitors can download the entire book, or they can just browse around through some of the seventeen chapters. These chapters include "Problem Solving and Creativity", "Lectures", and "Learning Theories". Additionally, there are several helpful appendices, such as "Obtaining an Academic Position" and "Sample Teaching Course Outline". Overall, it's an exemplary resource, and one that will be most useful to engineering educators. These materials can be used in a variety of engineering courses, including those that deal with chemical and mechanical engineering.

39

Engineering Bridges  

NSDL National Science Digital Library

The overarching goal of this planning grant is for Rice University engineering faculty, TSU education faculty, and HISD teachers, counselors, and administrators to develop a comprehensive program designed to systemically change science, technology, engineering, and mathematics (STEM) instruction and culture in high-minority high schools in order to increase the number of underrepresented minority students that are excited, motivated, and well-prepared to enter engineering university majors and to complete those majors to graduation.

40

Biological Engineering  

NSDL National Science Digital Library

This page, presented by MIT and made available online via the university's Open Courseware site, presents a series of materials on biological engineering. Topics include introduction to biological engineering design, systems microbiology, computation for biological engineers and molecular principles of biomaterials. Materials are at both the undergraduate and graduate school levels. OpenCourseWare is free educational material online. Video lectures, assignments and exams are included. No registration or enrollment is required to use the materials.

2011-05-13

41

Olympic Engineering  

NSDL National Science Digital Library

The Olympics are introduced as the unit theme by describing the engineering required to build grand and complex event centers. Then students are introduced to the techniques of engineering problem solving, specifically brainstorming and the steps of the engineering design process. The importance of thinking "outside of the box" is also emphasized to show that while some challenges seem impossible at first, solutions can be found when they are approached with creativity.

Integrated Teaching And Learning Program

42

Engineering Administration.  

ERIC Educational Resources Information Center

This book is intended to acquaint naval engineering officers with their duties in the engineering department. Standard shipboard organizations are analyzed in connection with personnel assignments, division operations, and watch systems. Detailed descriptions are included for the administration of directives, ship's bills, damage control, training…

Naval Personnel Program Support Activity, Washington, DC.

43

Rotary engine  

Microsoft Academic Search

This patent describes a rotary combustion engine having (i) a circular rotor disposed within a rotor chamber of a rotary engine housing, the rotor chamber formed of two sections of overlapping circles having different radii and centers. One of the circular sections has essentially the same radius and center as that of the rotor and the other of the circular

Mach

1986-01-01

44

Engine apparatus  

Microsoft Academic Search

This invention relates to internal combustion engines, the energy output of which is produced as hydraulic pressure, and in one embodiment comprises two, two-cycle internal combustion engines which face each other, the piston rods of each of which are axially aligned and are linked to both of the axially aligned drive pistons of two hydraulic pumps which also face each

Ferris

1982-01-01

45

Animated Engines  

NSDL National Science Digital Library

This website includes a variety of animations explaining the mechanical workings of a variety of steam, Stirling and internal combustion engines. The animations may be paused, slowed or sped up. The animations are accompanied by additional text explaining how each engine works.

Keveney, Matt

2011-09-22

46

Software Engineering  

NSDL National Science Digital Library

CSC 450. Software Engineering (3) Prerequisite: CSC 332 and senior standing. Study of the design and production of large and small software systems. Topics include systems engineering, software life-cycle and characterization; use of software tools. Substantial software project required.

Tagliarini, Gene

2003-04-21

47

Rotary engine  

Microsoft Academic Search

In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combination is described including means forming a cylindrical working chamber communicating with intake and exhaust port means for gases, two pistons having an arcuate length within the range of 90° to 120° of the cylindrical surface of the working chamber. The pistons are

Fawcett

1988-01-01

48

Thinking Engineering  

NSDL National Science Digital Library

Two university educators and a sixth-grade teacher collaborated to create and implement a five-day engineering unit that incorporated both mathematics and science concepts and hands-on learning. In this series of engineering activities, students test the strength of various materials and structures. In addition to learning science concepts and vocabulary, students practiced their measuring and mathematical skills.

Sharp, Janet; Zachary, Loren; Martin, Stu

2004-01-01

49

Mechanical Engineering  

NSDL National Science Digital Library

This site contains a broad overview of the mechanical engineering program at the Massachusetts Institute of Technology. It is one of the broadest and most versatile of the engineering professions. The site features lecture notes, assignments, solutions, online textbooks, projects, study groups and exams. This is a nice broad overview of available courses within this program.

2011-01-18

50

Electrochemical Engineering.  

ERIC Educational Resources Information Center

Discusses engineering ramifications of electrochemistry, focusing on current/potential distribution, evaluation of trade-offs between influences of different phenomena, use of dimensionless numbers to assist in scale-over to new operating conditions, and economics. Also provides examples of electrochemical engineering education content related to…

Alkire, Richard C.

1983-01-01

51

Genetic Engineering  

ERIC Educational Resources Information Center

Presents a review of genetic engineering, in which the genotypes of plants and animals (including human genotypes) may be manipulated for the benefit of the human species. Discusses associated problems and solutions and provides an extensive bibliography of literature relating to genetic engineering. (JR)

Phillips, John

1973-01-01

52

Holistic Engineering  

ERIC Educational Resources Information Center

In this article, the authors discuss how to prepare high-quality engineers who are better equipped to serve in the changing global marketplace, and suggest educators in pursuing the holistic concept of the "unity of knowledge" that will yield a definition of engineering more fitting for the times ahead. The unity of knowledge is fundamentally…

Grasso, Domenico; Martinelli, David

2007-01-01

53

Materials engineering  

SciTech Connect

This book presents the Proceedings of the Second Materials Engineering Conference. This valuable collection of papers deal with the awareness, creative use, economics, reliability, selection, design, testing and warranty of materials. The papers address topics of both immediate and lasting industrial importance at a readily assimilated level and contain information which will lead speedily to improvements in industrial practice. Topics considered include recent developments in the science and technology of high modulus polymers; computer aided design of advanced composites; a systematic approach to materials testing in metal forming; new cold working tool steels; friction surfacing and its applications; fatigue life assessment and materials engineering; alternative materials for internal combustion engines; adhesives and the engineer; thermoplastic bearings; engineering applications of ZA alloys; and utility and complexity in the selection of polymeric materials.

Bramley, A.N.

1985-01-01

54

Engine Coatings  

NASA Technical Reports Server (NTRS)

Increasing the operating temperature of turbine engines reduces fuel consumption and increases engine efficiency. However, engine components must be protected from excessive heat. Lewis Research Center has successfully developed thermal barrier coatings (TBCs), which are deposited on the components. They insulate, offer oxidation and corrosion resistance and increase adherence. Surface temperatures can be reduced by 200 degrees centigrade or more. G. E. Aircraft Engines, a Lewis contractor, now uses a TBC based on the one developed at Lewis, on production engines. The system, which consists of a bond and a top coat extends component life from 1.3 to 2 times. The company is also testing TBCs on components that operate at higher temperatures.

1992-01-01

55

Engineering Performance  

NASA Technical Reports Server (NTRS)

Under Goddard Space Flight Center and Jet Propulsion Laboratory SBIR (Small Business Innovative Research) contracts, AST Engineering Services, Inc. developed a system engineering computer software tool to model how certain applications will affect a proposed system's performance. Quantitative System Engineering (QASE) evaluates system timing, capacity and availability. The system is used to predict performance of proposed real-time, aerospace systems, embedded systems, and/or scientific systems, as well as in support of NASA's EDOS (Earth Observing System (EOS) Data and Operations System) initiative.

1998-01-01

56

Rhetoric for Engineers  

NSDL National Science Digital Library

As a field of study, rhetoric has enjoyed a popular resurgence in at the college level, and when deployed effectively, various rhetorical devices can make any piece of writing much more compelling. Ron Graham has created this site designed to help engineers and "other practical people" with the practice and art of rhetoric. The site includes a summary of basic rhetoric, along with some "Two-Minute Drills", which are designed to help engineers with developing answers to questions like "Are engineers made or born?" and "Define 'reliability'". Visitors can also look over the site's complete contents via an interactive guide which covers everything from abstraction to workplace distractions.

Graham, Ron

2008-02-28

57

Harmonic engine  

DOEpatents

A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

Bennett, Charles L. (Livermore, CA)

2009-10-20

58

Web Engineering.  

National Technical Information Service (NTIS)

Web Engineering is the application of systematic, disciplined and quantifiable approaches to development, operation, and maintenance of Web-based applications. It is both a pro-active approach and a growing collection of theoretical and empirical research...

Y. Deshpande S. Murugeesan A. Ginige S. Hansen D. Schwabe M. M. Gaedke B. White

2003-01-01

59

Rocket Engines  

NSDL National Science Digital Library

This video from SpaceTEC National Aerospace Technical Education Center explains the theory of rocket engines using Newton's third law of motion. This five minute video is one of the aerospace certification readiness courses.

2011-07-27

60

Materials Engineering  

NSDL National Science Digital Library

The Gateway Engineering Education Coalition consists of a group of universities that are concerned with providing high-quality educational resources in the field of engineering education. Their site contains a number of topical sections that deal with the different branches of this field. This particular section deals with educational resources in the area of materials engineering, and visitors will be glad to learn that there are interactive features here that cover the corrosion of metals, electrical conductivity, fracture mechanics, and ten additional topics. These materials can be used in the classroom to illustrate different principles and processes within materials engineering, and students may also wish to return to them as reference points during their studies.

61

Software Engineering.  

National Technical Information Service (NTIS)

Today's software systems generally use obsolete technology, are not integrated properly with other software systems, and are difficult and costly to maintain. The discipline of reverse engineering is becoming prominent as organizations try to move their s...

E. M. Fridge J. Hiott J. Golej A. Plumb

1993-01-01

62

Engine construction  

Microsoft Academic Search

An engine has at least two piston-cylinder assemblies each comprising a cylinder formed in an engine block with a cylinder head and a piston therein in sliding relationship toward and away from the head, a piston rod operatively connected to the piston and to a crankshaft, motion producing member of shape-memory material, e.g. Nitinol, having a transformation temperature range, secured

1984-01-01

63

Web Engineering  

Microsoft Academic Search

Web Engineering is the application of systematic, disciplined and\\u000aquantifiable approaches to development, operation, and maintenance of Web-based\\u000aapplications. It is both a pro-active approach and a growing collection of\\u000atheoretical and empirical research in Web application development. This paper\\u000agives an overview of Web Engineering by addressing the questions: a) why is it\\u000aneeded? b) what is its domain

Yogesh Deshpande; San Murugesan; Athula Ginige; Steve Hansen; Daniel Schwabe; Martin Gaedke; Bebo White

2002-01-01

64

Engineering Spore  

Microsoft Academic Search

The software engineers, artists, and others who work at Maxis, now owned by video game giant Electronic Arts, have migrated here because Wright is a legend. Over the past two decades, the 48-year-old Wright, who studied architecture and mechanical engineering at Louisiana Tech University has utterly transformed his industry with hits like SimCity, in which players build virtual towns, and

David Kushner

2008-01-01

65

Discover Engineering  

NSDL National Science Digital Library

Turn up your computer's speakers if you want to really experience the homepage of Discover Engineering, as it has some rollicking music and graphics to emphasize how exciting engineering can be. Roller coaster design, the biomechanics of skateboarding, solar cooking, purifying water, and creating virtual computer worlds all involve engineering, and this site has "video activities" to explain them all. Visitors can check out the great video called "Extreme Enough", about a California skateboard shoe company that is using engineering to design skate shoes that "absorb impact and minimize injury" to skaters when they wipe out. The video activity entitled "Engineers for a Sustainable World" shows visitors how engineering is used to create water filtration systems for people who have access to only dirty water, in remote villages and rural areas. At the University of Iowa, local, unclean river water is used to demonstrate how a filtration system, much to the amazement of the three student participants, can make the river water fit to drink.

66

Engineer Profiles: The District Engineer.  

National Technical Information Service (NTIS)

This series of four annual interviews with Colonel William W. Badger presents the changing viewpoints of an incumbant District Engineer. The conversations cover a wide range of subjects from the civil works planning process to personnel management. Over t...

F. N. Schubert

1983-01-01

67

Software engineering  

NASA Technical Reports Server (NTRS)

Today's software systems generally use obsolete technology, are not integrated properly with other software systems, and are difficult and costly to maintain. The discipline of reverse engineering is becoming prominent as organizations try to move their systems up to more modern and maintainable technology in a cost effective manner. The Johnson Space Center (JSC) created a significant set of tools to develop and maintain FORTRAN and C code during development of the space shuttle. This tool set forms the basis for an integrated environment to reengineer existing code into modern software engineering structures which are then easier and less costly to maintain and which allow a fairly straightforward translation into other target languages. The environment will support these structures and practices even in areas where the language definition and compilers do not enforce good software engineering. The knowledge and data captured using the reverse engineering tools is passed to standard forward engineering tools to redesign or perform major upgrades to software systems in a much more cost effective manner than using older technologies. The latest release of the environment was in Feb. 1992.

Fridge, Ernest M., III; Hiott, Jim; Golej, Jim; Plumb, Allan

1993-01-01

68

Advanced Natural Gas Reciprocating Engine(s)  

SciTech Connect

Energy independence and fuel savings are hallmarks of the nation’s energy strategy. The advancement of natural gas reciprocating engine power generation technology is critical to the nation’s future. A new engine platform that meets the efficiency, emissions, fuel flexibility, cost and reliability/maintainability targets will enable American manufacturers to have highly competitive products that provide substantial environmental and economic benefits in the US and in international markets. Along with Cummins and Waukesha, Caterpillar participated in a multiyear cooperative agreement with the Department of Energy to create a 50% efficiency natural gas powered reciprocating engine system with a 95% reduction in NOx emissions by the year 2013. This platform developed under this agreement will be a significant contributor to the US energy strategy and will enable gas engine technology to remain a highly competitive choice, meeting customer cost of electricity targets, and regulatory environmental standard. Engine development under the Advanced Reciprocating Engine System (ARES) program was divided into phases, with the ultimate goal being approached in a series of incremental steps. This incremental approach would promote the commercialization of ARES technologies as soon as they emerged from development and would provide a technical and commercial foundation of later-developing technologies. Demonstrations of the Phase I and Phase II technology were completed in 2004 and 2008, respectively. Program tasks in Phase III included component and system development and testing from 2009-2012. Two advanced ignition technology evaluations were investigated under the ARES program: laser ignition and distributed ignition (DIGN). In collaboration with Colorado State University (CSU), a laser ignition system was developed to provide ignition at lean burn and high boost conditions. Much work has been performed in Caterpillar’s DIGN program under the ARES program. This work has consisted of both modeling and single cylinder engine experiments to quantify DIGN performance. The air handling systems of natural gas engines dissipate a percentage of available energy as a result of both flow losses and turbomachinery inefficiencies. An analytical study was initiated to increase compressor efficiency by employing a 2-stage inter-cooled compressor. Caterpillar also studied a turbo-compound system that employs a power turbine to recover energy from the exhaust gases for improved engine efficiency. Several other component and system investigations were undertaken during the final phase of the program to reach the ultimate ARES goals. An intake valve actuation system was developed and tested to improve engine efficiency, durability and load acceptance. Analytical modeling and materials testing were performed to evaluate the performance of steel pistons and compacted graphite iron cylinder head. Effort was made to improve the detonation sensing system by studying and comparing the performance of different pressure sensors. To reduce unburned hydrocarbon emissions, different camshafts were designed and built to investigate the effect of exhaust valve opening timing and value overlap. 1-D & 3-D coupled simulation was used to study intake and exhaust manifold dynamics with the goal of reducing load in-balance between cylinders. Selective catalytic reduction with on-board reductant generation to reduce NOx emissions was also engine tested. An effective mean to successfully deploy ARES technologies into the energy markets is to deploy demonstration projects in the field. In 2010, NETL and Caterpillar agreed to include a new “opportunity fuel” deliverable and two field demonstrations in the ARES program. An Organic Rankine Cycle system was designed with production intent incorporating lessons learned from the Phase II demonstration. Unfortunately, business conditions caused Caterpillar to cancel this demonstration in 2011. Nonetheless, Caterpillar partnered with a local dealer to deploy an ARES class engine using syngas from a biomass gasifier as

Kwok, Doris; Boucher, Cheryl

2009-09-30

69

Engineering Materials  

NSDL National Science Digital Library

This resource includes a syllabus, homework assignments, and references to other course materials used to teach an introductory engineering materials class to manufacturing students. Engineering materials such as metals, plastics, and composites are examined in this course material. Processing for the optimization of material properties is covered extensively, as is material cost estimation for manufacturing.These resources can be followed by any knowledgeable manufacturing educator as long as the equipment to conduct the experiments is readily available.Use Click here to acquire materials below for a preview of the syllabus from this course.

Manohar, Priyadarshan

2009-07-16

70

Engineering Magic  

NSDL National Science Digital Library

The American Society of Mechanical Engineers offers a fascinating Web site that examines the engineering principles behind some common magic tricks. There are six educational modules given on the site, consisting of Disappearing Milk, Piercing a Balloon, Floating Dollar, Milk Pitcher, Playing Card, and Egg in a Bottle. Each one shows the "magic" as it is performed and then explains how it actually works. There are instructions and materials available to teach the user how to do each trick. Teachers interested in demonstrating the material in class can find lesson plans and handouts for all of the modules.

71

Manufacturing Engineering  

NSDL National Science Digital Library

Manufacturing Engineering is a monthly publication of the Society of Manufacturing Engineers. It is targeted primarily at manufacturing professionals, but it can also be of use to anyone with an interest in the field. This Web site posts between six and ten in-depth articles from each issue of the magazine. Examples of some topics that have been addressed in past issues include turbomachining processes, computer-aided design and manufacturing, and robotic assembly. The online archive maintains all previous monthly postings back to January 2000.

72

Engineering Privacy  

Microsoft Academic Search

In this paper we integrate insights from diverse islands of research on electronic privacy to offer a holistic view of privacy engineering and a systematic structure for the discipline's topics. First we discuss privacy requirements grounded in both historic and contemporary perspectives on privacy. We use a three-layer model of user privacy concerns to relate them to system operations (data

Sarah Spiekermann; Lorrie Faith Cranor

2009-01-01

73

Aero Engineering  

ERIC Educational Resources Information Center

Sets forth a proposed university/industry/government cooperative aero educational program to combat present curriculum deficiencies in existing programs. The basic proposal urges professor/engineer exchanges, work study programs, government/industry input into curriculum and surplus equipment funneled into the educational program. (BR)

Brodsky, R. F.

1974-01-01

74

Rotary engine  

Microsoft Academic Search

An engine is described comprising: a frame including members forming portions of inner and outer concentric spherical surfaces and a hollow shaft, the frame also including first means for supporting heat members with respect to the hollow shaft, the hollow shaft passing through space encircled by the spherical surfaces; a rotatable drive shaft extending through the hollow shaft; second means

1988-01-01

75

Thermal engine  

SciTech Connect

A thermal engine utilizing a strip of nitinol material or other thermally responsive shape memory effect material to drive a reciprocating output shaft, said strip of material forming a common wall between two different alternating temperature sources which thermally cycle the material.

Karnes, T.E.; Trupin, R.J.

1984-01-03

76

Engineering Geology  

ERIC Educational Resources Information Center

Engineering geology remains a potpourri of applied classical geology, and 1977 witnessed an upswing in demand for these services. Traditional foundation-related work was slight, but construction related to national needs increased briskly. Major cities turned to concerns of transit waste-water treatment and solid-waste disposal. (Author/MA)

Hatheway, Allen W.

1978-01-01

77

Engineering ontologies  

Microsoft Academic Search

We analyse the construction as well as the role of ontologies in knowledge sharing and reuse for complex industrial applications. In this article, the practical use of ontologies in large-scale applications not restricted to knowledge-based systems is demonstrated, for the domain of engineering systems modelling, simulation and design. A general and formal ontology, called PHYSSYS, for dynamic physical systems is

Pim Borst; Hans Akkermans; Jan L. Top

1997-01-01

78

Engineered Sports  

NSDL National Science Digital Library

In this activity, learners explore the concept of how aerospace engineering has impacted sports, specifically exploring the design of golf balls. Learners work in teams to explore the physics of bounce, determine the application of aerospace principles to aircraft design, present their plans to the group, and evaluate group recommendations and findings.

Ieee

2013-08-30

79

Copycat Engineers  

NSDL National Science Digital Library

This lesson introduces students to the idea of biomimicry â or looking to nature for engineering ideas. Biomimicry involves solving human problems by mimicking natural solutions, and it works well because the solutions exist naturally. There are numerous examples of useful applications of biomimicry, and in this lesson we look at a few fun examples.

Integrated Teaching And Learning Program

80

Environmental Engineering  

NSDL National Science Digital Library

In this unit, students explore the various roles of environmental engineers, including: environmental cleanup, water quality, groundwater resources, surface water and groundwater flow, water contamination, waste disposal and air pollution. Specifically, students learn about the factors that affect water quality and the conditions that enable different animals and plants to survive in their environments. Next, students learn about groundwater and how environmental engineers study groundwater to predict the distribution of surface pollution. Students also learn how water flows through the ground, what an aquifer is and what soil properties are used to predict groundwater flow. Additionally, students discover that the water they drink everyday comes from many different sources, including surface water and groundwater. They investigate possible scenarios of drinking water contamination and how contaminants can negatively affect the organisms that come in contact with them. Students learn about the three most common methods of waste disposal and how environmental engineers continue to develop technologies to dispose of trash. Lastly, students learn what causes air pollution and how to investigate the different pollutants that exist, such as toxic gases and particulate matter. Also, they investigate the technologies developed by engineers to reduce air pollution.

Integrated Teaching And Learning Program

81

Engineering anthropometry  

Microsoft Academic Search

Engineering anthropometry as a measuring science is transforming from static physical measurements into dynamic procedures using photogrammetric and laser techniques, with new mathematical and statistical procedures emerging. The design of garments, equipment, and workstations often requires prediction of missing anthropometric dimensions from measured ones. For this, regression methods are often used. The careful matching of design dimensions to anthropometric measures

KARL H. E. KROEMER

1989-01-01

82

Django on Google App Engine  

Microsoft Academic Search

\\u000a In mid-2008, Google finally opened up Google App Engine for use by the public. Google App Engine is a cloud infrastructure\\u000a onto which developers can deploy Java-or Python-based web applications. This is an exciting prospect; Google has finally created\\u000a a cloud into which we can deploy web sites. Much like Amazon’s own Elastic Cloud Compute service, it’s an option that

Jim McGaw

83

Enhancing Engineering Education through Engineering Management  

ERIC Educational Resources Information Center

Engineering Management courses are added to a traditional engineering curriculum to enhance the value of an undergraduate's engineering degree. A four-year engineering degree often leaves graduates lacking in business and management acumen. Engineering management education covers topics enhancing the value of new graduates by teaching management…

Pence, Kenneth R.; Rowe, Christopher J.

2012-01-01

84

Re-engineering Engineering Education  

ERIC Educational Resources Information Center

In 2005, leaders gathered by the National Association of Manufacturers declared yet another "STEM" emergency. In the face of global competition, they argued, the number of bachelor's degrees awarded annually to U.S. students in science, math and engineering must double by 2015. In fact, the need for STEM talent is even more critical today as the…

Gordon, Bernard M.; Silevitch, Michael B.

2009-01-01

85

Engine Research Center: Advanced Diesel Engine Research.  

National Technical Information Service (NTIS)

The objectives of the Engine Research Center (ERC) are to conduct research leading to improved diesel engines, to provide trained manpower for U. S. needs, and to cooperate in technical information exchange with Army and other engine laboratories. Fundame...

M. Corradini P. Farrell D. Foster J. Ghandhi J. Martin

1999-01-01

86

Rotary engine  

SciTech Connect

An engine is described comprising: a frame including members forming portions of inner and outer concentric spherical surfaces and a hollow shaft, the frame also including first means for supporting heat members with respect to the hollow shaft, the hollow shaft passing through space encircled by the spherical surfaces; a rotatable drive shaft extending through the hollow shaft; second means for rotatably supporting the drive shaft with respect to the hollow shaft; means for forming a variable volume combustion chamber between the spherical surfaces; third means for rotatably supporting the chamber forming means on the hollow shaft, the third supporting means including means for driving the drive shaft; first means for charging the combustion chamber with air; second means for charging the combustion chamber with fuel to create an air-fuel mixture; means for igniting the air-fuel mixture to create combustion products; means for exhausting combustion products from the combustion chamber; and means for cooling the engine.

Lien, O.A.

1988-01-26

87

Engineered Music  

NSDL National Science Digital Library

In this activity, learners explore how musical instruments are engineered. Learners explore how mass manufacturing impacted the recorder, and then work in teams to design their own musical instrument using easy to find materials. Teams first design their instrument on paper, then build their instrument, and evaluate the strategies employed. The new instrument must be "tunable" and must also be unique from other instruments. Learners will also consider the concepts of patents and intellectual property.

Ieee

2013-07-08

88

Engineering Brainstorming  

NSDL National Science Digital Library

Students act as an engineering consulting firm with the task to design and sell their idea for a new vehicle power system. During the brainstorming activity (Generate Ideas), students determine and comprehend what type of information is important to learn in order to accomplish the task. Then they watch several video clips as part of Multiple Perspectives. The new input contributes to changing and focusing their original ideas.

Vu Bioengineering Ret Program

89

Engineering Judgement  

Microsoft Academic Search

Engineers who develop safety-related systems are required to work to remarkably high standards: SIL 1, the lowest classification recognised by the international standard IEC 61508, requires a probability of failure\\/hour (pfh) of 10-5 or lower; and many systems are required to achieve several orders of magnitude lower failure rates than this. Yet SIL 1 is already so demanding that it

Martyn Thomas

2004-01-01

90

Conveyor Engineering  

NSDL National Science Digital Library

In this activity, learners explore the engineering behind the conveyor belt and consider the impact this invention has had on transportation and the coordinated shipping and delivery of goods. Teams design and build a conveyor system out of everyday materials that can transport pieces of candy 4 feet (120cm). The conveyor must make a 90 degree turn as it moves along. Teams design their system, build and test it, evaluate their designs, and share observations.

Ieee

2014-01-28

91

Engineering enzymes  

PubMed Central

Fundamental research into bioinorganic catalysis of the kind presented at this Faraday Discussion has the potential to turn inspiration drawn from impressive natural energy and chemical transformations into artificial catalyst constructions useful to mankind. Creating bio-inspired artificial constructions requires a level of understanding well beyond simple description of structures and mechanisms of natural enzymes. To be useful, such description must be augmented by a practical sense of structural and energetic engineering tolerances of the mechanism. Significant barriers to achieving an engineering understanding of enzyme mechanisms arise from natural protein complexity. In certain cases we can surmount these barriers to understanding, such as natural electron tunneling, coupling of electron tunneling to light capture and proton exchange as well as simpler bond breaking redox catalysis. Hope for similar solutions of more complex bioinorganic enzymes is indicated in several papers presented in this Discussion. Armed with an engineering understanding of mechanism, the current serious frustrations to successful creation of functional artificial proteins that are rooted in protein complexity can fall away. Here we discuss the genetic and biological roots of protein complexity and show how to dodge and minimize the effects of complexity. In the best-understood cases, artificial enzymes can be designed from scratch using the simplest of protein scaffolds.

Moser, Christopher C.

2014-01-01

92

Planetary engineering  

NASA Technical Reports Server (NTRS)

Assuming commercial fusion power, heavy lift vehicles and major advances in genetic engineering, the authors survey possible late-21st century methods of working major transformations in planetary environments. Much more Earthlike climates may be produced on Mars by generating low freezing point greenhouse gases from indigenous materials; on Venus by biological conversion of CO2 to graphite, by canceling the greenhouse effect with high-altitude absorbing fine particles, or by a sunshield at the first Lagrangian point; and on Titan by greenhouses and/or fusion warming. However, in our present state of ignorance we cannot guarantee a stable endstate or exclude unanticipated climatic feedbacks or other unintended consequences. Moreover, as the authors illustrate by several examples, many conceivable modes of planetary engineering are so wasteful of scarce solar system resources and so destructive of important scientific information as to raise profound ethical issues, even if they were economically feasible, which they are not. Global warming on Earth may lead to calls for mitigation by planetary engineering, e.g., emplacement and replenishment of anti-greenhouse layers at high altitudes, or sunshields in space. But here especially we must be concerned about precision, stability, and inadvertent side-effects. The safest and most cost-effective means of countering global warming - beyond, e.g., improved energy efficiency, CFC bans and alternative energy sources - is the continuing reforestation of approximately 2 times 107 sq km of the Earth's surface. This can be accomplished with present technology and probably at the least cost.

Pollack, James B.; Sagan, Carl

1991-01-01

93

Rotary engine  

SciTech Connect

In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combination is described including means forming a cylindrical working chamber communicating with intake and exhaust port means for gases, two pistons having an arcuate length within the range of 90/sup 0/ to 120/sup 0/ of the cylindrical surface of the working chamber. The pistons are movable toward and away from each other for compression and expansion of gases in the working chamber while separately rotating concentrically-arranged shafts, a drive shaft, three sets of gearing for connecting the pistons to the drive shaft, a first set of the gearing drivingly coupled to a first of the separate concentric shafts, a second set of the gearing drivingly coupled to a second of the concentric shaft, and a third set of the gearing comprising non-circular gears. The drive shaft is secured to one gear of each of the first, second and third gear sets of gearing for rotating the drive shaft with a substantially constant velocity and torque output throughout the several phases of the working cycle of the engine, compressor or pump.

Fawcett, S.L.

1988-02-09

94

Magnesium: Engineering the Surface  

NASA Astrophysics Data System (ADS)

Magnesium (Mg) and its alloys provide numerous benefits as lightweight materials; however, industrial deployment of Mg in most instances requires anticorrosion coatings. Engineering the Mg surface is an area that has been undergoing intense research recently. Surface engineering commences with the "pretreatment" step, which can be used to modify the surface composition and morphology, resulting in surface enrichment or depletion of alloying elements. Following this, electrochemical plating (including electro- and electroless plating) and conversion coatings have emerged as common means of coating Mg. In this study, we present the key aspects relating to the science and technology associated with pretreatment, electrochemical plating, and conversion coatings. This is followed by experimental examples of engineered surfaces of industrial relevance.

Chen, X. B.; Yang, H. Y.; Abbott, T. B.; Easton, M. A.; Birbilis, N.

2012-06-01

95

Genetic Engineering  

NSDL National Science Digital Library

The Discovery Education website serves as a repository of instructional materials for educators seeking to help their charges learn about everything from the solar system to genetically modified organisms. This particular lesson plan deals with the science and technology of genetic engineering and it is intended to be used by advanced high school and community college students. Users will appreciate the fact that the entire plan is well-organized and divided into 12 sections including Objectives, Discussion Questions, and Procedures. The Discussion Questions are thoughtful and well-articulated and one can imagine that each query might generate more than a bit of meditation and close consideration.

Morrissette-Johnson, Winona

96

Engineered Nanopores  

Microsoft Academic Search

We review current progress in the science and technology of engineered nanopore devices (ENDs), which are individually addressable\\u000a nanoporous channels embedded in a thin film substrate. These biologically-inspired devices can be constructed by nanofabrication\\u000a approaches employing solid-state materials (e.g., oxides and nitrides), or from soft matter (e.g., proteins and lipids) by\\u000a self-assembly. Coupled with single-molecule electrical and optical techniques, ENDs

Amir G. Ahmadi; Sankar Nair

97

Aerobiological Engineering  

NSDL National Science Digital Library

In light of the tragic events of September 11, research into airborne pathogen containment is becoming increasingly important. Aerobiological engineering examines methods of ventilation system design that can effectively minimize the spread of harmful spores or microbes. The Web site at Pennsylvania State University explores many aspects of this subject. Large databases of airborne pathogens contain information about particle size and shape, which could be useful in air filtration systems. There are very good sections of the site such as Bioterrorism and Immune Building Technology and The Spread of Disease in Office Buildings. Both current and developmental airborne pathogen control technologies are thoroughly explained.

2006-01-09

98

Aerobiological Engineering  

NSDL National Science Digital Library

In light of the tragic events of September 11, research into airborne pathogen containment is becoming increasingly important. Aerobiological engineering examines methods of ventilation system design that can effectively minimize the spread of harmful spores or microbes. The Web site at Pennsylvania State University explores many aspects of this subject. Large databases of airborne pathogens contain information about particle size and shape, which could be useful in air filtration systems. There are very good sections of the site such as Bioterrorism and Immune Building Technology and The Spread of Disease in Office Buildings. Both current and developmental airborne pathogen control technologies are thoroughly explained.

99

Software engineering as an engineering discipline  

NASA Technical Reports Server (NTRS)

The goals of the Software Engineering Institute's Education Program are as follows: to increase the number of highly qualified software engineers--new software engineers and existing practitioners; and to be the leading center of expertise for software engineering education and training. A discussion of these goals is presented in vugraph form.

Gibbs, Norman

1988-01-01

100

Engine construction  

SciTech Connect

An engine has at least two piston-cylinder assemblies each comprising a cylinder formed in an engine block with a cylinder head and a piston therein in sliding relationship toward and away from the head, a piston rod operatively connected to the piston and to a crankshaft, motion producing member of shape-memory material, e.g. Nitinol, having a transformation temperature range, secured to the cylinder head and the side of the piston opposite from the connecting rod, the motion producing member having a heat treated high temperature extended shape memory position and a low temperature low energy compressed position, the Nitinol member being of hollow tubular form and having pressure and return hoses connected thereto for supplying and removing cooling fluid into and from the Nitinol member, an electrical heating device connected to the Nitinol member, whereby the Nitinol member is easily compressed with relatively little force from the extended shape memory position to the compressed position when cooling fluid is supplied thereto to reduce the temperature of the Nitinol member to or below the lower limit of the transformation temperature range and the Nitinol member is automatically extended with relatively great force from the compressed position to the shape memory position when heated by the heating device to or above the upper limit of the transformation temperature range.

Dillon, C.L.

1984-03-06

101

Rapid Deployment Drilling System for on-site inspections under a Comprehensive Test Ban Preliminary Engineering Design  

SciTech Connect

While not a new drilling technology, coiled-tubing (CT) drilling continues to undergo rapid development and expansion, with new equipment, tools and procedures developed almost daily. This project was undertaken to: analyze available technological options for a Rapid Deployment Drilling System (RDDS) CT drilling system: recommend specific technologies that best match the requirements for the RDDS; and highlight any areas where adequate technological solutions are not currently available. Postshot drilling is a well established technique at the Nevada Test Site (NTS). Drilling provides essential data on the results of underground tests including obtaining samples for the shot zone, information on cavity size, chimney dimensions, effects of the event on surrounding material, and distribution of radioactivity.

Maurer, W.C.; Deskins, W.G.; McDonald, W.J.; Cohen, J.H. [Maurer Engineering, Inc., Houston, TX (United States); Heuze, F.E.; Butler, M.W. [Lawrence Livermore National Lab., CA (United States)

1996-09-01

102

Reciprocating engines  

NASA Technical Reports Server (NTRS)

An intake valve arrangement for positively controlling the opening and closing of the poppet valve in a hot gas cylinder in a hydrazine powered engine is described. The poppet valve is operated by the piston and gas pressure only. The poppet valve uses a pneumatic spring which holds the poppet valve against the piston while the valve is opened and closed. To accomplish this, a poppet valve is slidably mounted in a pneumatic spring chamber which reaches a pressure approaching the gas supply pressure and, during the opening of the valve, the spring chamber retains enough pressure to hold the poppet valve onto the piston. In addition, the bottom of the poppet valve can have a suction cup type configuration to hold the poppet valve on the piston during the down stroke.

Akkerman, J. W. (inventor)

1981-01-01

103

Engine air intake valve  

Microsoft Academic Search

This paper discusses, in combination with an internal combustion engine, a system for regulating engine speed by regulating the air flow across a throttle valve in an air intake passage. It comprises an engine air intake valve and means of sensing an operating variable representative of engine speed and sending an electrical signal representative of the engine speed to the

1990-01-01

104

European Solar Engineering School Homepage  

NSDL National Science Digital Library

The European Solar Engineering School (ESES) provides courses in advanced solar energy engineering for well qualified master's level engineering students. The following are offered: advanced solar thermal engineering, advanced photovoltaic engineering, applied solar energy engineering, and utilization of solar energy.

2007-02-12

105

Engineering Design Handbook: Maintenance Engineering Techniques.  

National Technical Information Service (NTIS)

The fundamental purpose of this handbook, Maintenance Engineering Techniques, is to provide authoritative information requisite to the planning and implementation of effective maintenance engineering programs. A comprehensive discussion of maintenance eng...

1975-01-01

106

Engine Monitoring Systems For Jet Aircraft Engines.  

National Technical Information Service (NTIS)

The objectives were to evaluate the effectiveness of DoD systems being developed and systems being used to monitor the conditions of jet aircraft engines, including the ability of the monitoring systems to provide accurate and reliable engine performance ...

1996-01-01

107

Earthquake Engineering Research - 1982.  

National Technical Information Service (NTIS)

The Committee on Earthquake Engineering Research addressed two questions: What progress has research produced in earthquake engineering and which elements of the problem should future earthquake engineering pursue. It examined and reported in separate cha...

1982-01-01

108

Building Great (Coalition) Engineers.  

National Technical Information Service (NTIS)

G day from the Royal Australian Engineers (RAE) School of Military Engineering (SME) at Steele Barracks, Moorebank, New South Wales, Australia. Like more than 20 United States Army engineer majors before me, I am the military personnel exchange program of...

T. R. Beck

2011-01-01

109

Meta Search Engines.  

ERIC Educational Resources Information Center

Describes common options and features to consider in evaluating which meta search engine will best meet a searcher's needs. Discusses number and names of engines searched; other sources and specialty engines; search queries; other search options; and results options. (AEF)

Garman, Nancy

1999-01-01

110

Annular nozzle engine technology  

NASA Technical Reports Server (NTRS)

The topics covered include: (1) driver rocket subsystem; (2) annular nozzle engine technology; (3) expansion-deflection nozzle; (4) aerospike-nozzled engine background; (5) aerospike testing; (6) linear aerospike; and (7) the combined cycle engine.

Martinez, AL

1992-01-01

111

Rotary engine  

SciTech Connect

This paper discusses an engine. It comprises a cylinder block; cylinders contained in the cylinder block; matching pistons, each piston reciprocatingly received in one of the cylinders; matching piston rods, each rod connected to one of the pistons and extending outwardly from the block; sheave gears, each sheave gear having a sheave gear axis and a circumference disposed about the sheave gear axis bearing a set of gear teeth thereon; means connecting a respective one of the sheave gears to a respective one of the pistons rods such that reciprocation of the pistons in the cylinders causes rotation of the sheave gears about the sheave gears axes; a combination flywheel/ring gear having a ring gear axis and an outer circumference disposed about the axis bearing a set of ring gear teeth thereon; and means positioning the flywheel/ring gear such that the gear teeth on the flywheel/ring gear engaged the gear teeth on the sheave gears. The flywheel/ring gear is rotated about by its axis by rotation of the sheave gears upon reciprocation of the pistons in the cylinders.

Wilson, Z.

1990-08-28

112

Distinguishing ecological engineering from environmental engineering  

Microsoft Academic Search

This paper uses complex system thinking to identify key peculiarities of ecological engineering. In particular it focuses on the distinction between the purpose-driven design of structures in environmental engineering and the natural process of self-organization characteristic of life, which needs to be integrated into ecological engineering.Conventional engineering addresses the problem of fabrication of an organized structure, say a road, which

T. F. H Allen; M Giampietro; A. M Little

2003-01-01

113

Mod II engine development  

NASA Technical Reports Server (NTRS)

The Mod II engine, a four-cylinder, automotive Stirling engine utilizing the Siemens-Rinia double-acting concept, was assembled and became operational in January 1986. This paper describes the Mod II engine, its first assembly, and the subsequent development work done on engine components up to the point that engine performance characterization testing took place. Performance data for the engine are included.

Karl, David W.

1987-01-01

114

Transverse Engine (a novel piston engine concept)  

Microsoft Academic Search

Transverse Engine is a novel piston engine concept. As the name implies, the cylinder block is transverse to the output shaft. Basically, the engine has a set of four cylinders. Any number of sets of four cylinders can be arranged parallel to each other or radial to the output shaft. The linkage transmitting power from the reciprocating pistons to the

1984-01-01

115

Information engineering of a software engineering ontology  

Microsoft Academic Search

In this paper, we describe the preliminary result of the development and implementation of a Java-based system for information gathering, knowledge extraction and maintenance of software engineering ontology. The system is capable of manipulative ontology instances from the information repositories and information sources. Design of software engineering ontology through the use of the body of software engineering knowledge together with

P. Wongthongtham; E. Chang; T. S. Dillon

2005-01-01

116

Environmental Engineering in Mining Engineering Education  

ERIC Educational Resources Information Center

In this paper, the current profile of the environmental engineer and the programming of the subject "Environmental Engineering and Technology" corresponding to the studies of Mining Engineering at the University of Oviedo in Spain, is discussed. Professional profile, student knowledge prior to and following instruction as well as available…

Mahamud-Lopez, Manuel Maria; Menendez-Aguado, Juan Maria

2005-01-01

117

Software engineering as an engineering discipline  

NASA Technical Reports Server (NTRS)

The purpose of this panel is to explore the emerging field of software engineering from a variety of perspectives: university programs; industry training and definition; government development; and technology transfer. In doing this, the panel will address the issues of distinctions among software engineering, computer science, and computer hardware engineering as they relate to the challenges of large, complex systems.

Freedman, Glenn B.

1988-01-01

118

National Engineers Week  

NSDL National Science Digital Library

Now an annual event, National Engineers Week was founded by the National Society of Professional Engineers in 1951. In 1988, the National Engineers Week consortium expanded and now includes "more than 100 engineering, scientific, and education societies and major corporations dedicated to enhancing the public understanding of the engineering profession and to promoting pre-college interest in math, science, and engineering as a career option." From this website, visitors can read suggestions for ways to get involved in National Engineers Week (National Engineers Week 2004 was held February 22-28) and learn about other competitions for young and upcoming engineers. Also available online is the first Connecting the World teleconference which featured Alan Boeckmann, Chairman and CEO of Fluor Corporation, speaking about Engineering in the 21st Century. The website currently promotes the "Introduce a Girl to Engineering Day," which was presented to the United Nations as part of an international briefing, Girls and Technology: New Educational Opportunities. Another feature of interest is the section highlighting the accomplishments of engineers and their inspirational stories about becoming "the engineer behind the sounds of Star Wars," for example. The New Faces of Engineering program highlights the work of young engineers. A discussion forum and various educational resources are also available from this website. Finally, a section on Engineer / Volunteer Kits suggests ways engineers, community members and teachers can get involved in supporting up-and-coming engineers.

2005-11-06

119

National Engineers Week  

NSDL National Science Digital Library

Now an annual event, National Engineers Week was founded by the National Society of Professional Engineers in 1951. In 1988, the National Engineers Week consortium expanded and now includes "more than 100 engineering, scientific, and education societies and major corporations dedicated to enhancing the public understanding of the engineering profession and to promoting pre-college interest in math, science, and engineering as a career option." From this website, visitors can read suggestions for ways to get involved in National Engineers Week (National Engineers Week 2004 was held February 22-28) and learn about other competitions for young and upcoming engineers. Also available online is the first Connecting the World teleconference which featured Alan Boeckmann, Chairman and CEO of Fluor Corporation, speaking about Engineering in the 21st Century. The website currently promotes the "Introduce a Girl to Engineering Day," which was presented to the United Nations as part of an international briefing, Girls and Technology: New Educational Opportunities. Another feature of interest is the section highlighting the accomplishments of engineers and their inspirational stories about becoming "the engineer behind the sounds of Star Wars," for example. The New Faces of Engineering program highlights the work of young engineers. A discussion forum and various educational resources are also available from this website. Finally, a section on Engineer / Volunteer Kits suggests ways engineers, community members and teachers can get involved in supporting up-and-coming engineers.

120

Geotechnical Earthquake Engineering Portal  

NSDL National Science Digital Library

Site aiming to provide useful and educational information in geotechnical earthquake engineering. The site involves topics such as: liquefaction engineering, seismic slope analysis and soil structure interaction.

2008-09-29

121

Space engine safety system  

NASA Technical Reports Server (NTRS)

A rocket engine safety system was designed to initiate control procedures to minimize damage to the engine or vehicle or test stand in the event of an engine failure. The features and the implementation issues associated with rocket engine safety systems are discussed, as well as the specific concerns of safety systems applied to a space-based engine and long duration space missions. Examples of safety system features and architectures are given, based on recent safety monitoring investigations conducted for the Space Shuttle Main Engine and for future liquid rocket engines. Also, the general design and implementation process for rocket engine safety systems is presented.

Maul, William A.; Meyer, Claudia M.

1991-01-01

122

Ontology Languages and Engineering  

NASA Astrophysics Data System (ADS)

Ontologies and ontology based systems are rapidly becoming mainstream technologies, with RDF and OWL now being deployed in diverse application domains, and with major technology vendors starting to augment their existing systems with ontological reasoning. For example, Oracle Inc. recently enhanced its well-known database management system with modules that use RDF/OWL ontologies to support "semantic data management", and their product brochure lists numerous application areas that can benefit from this technology, including Enterprise Information Integration, KnowledgeMining, Finance, Compliance Management and Life Science Research. The design of the high quality ontologies needed to support such applications is, however, still extremely challenging. In this talk I will describe the design of OWL, show how it facilitates the development of ontology engineering tools, describe the increasingly wide range of available tools, and explain how such tools can be used to support the entire design, deployment and maintenance ontology life-cycle.

Horrocks, Ian

123

Software engineering methodologies and tools  

NASA Technical Reports Server (NTRS)

Over the years many engineering disciplines have developed, including chemical, electronic, etc. Common to all engineering disciplines is the use of rigor, models, metrics, and predefined methodologies. Recently, a new engineering discipline has appeared on the scene, called software engineering. For over thirty years computer software has been developed and the track record has not been good. Software development projects often miss schedules, are over budget, do not give the user what is wanted, and produce defects. One estimate is there are one to three defects per 1000 lines of deployed code. More and more systems are requiring larger and more complex software for support. As this requirement grows, the software development problems grow exponentially. It is believed that software quality can be improved by applying engineering principles. Another compelling reason to bring the engineering disciplines to software development is productivity. It has been estimated that productivity of producing software has only increased one to two percent a year in the last thirty years. Ironically, the computer and its software have contributed significantly to the industry-wide productivity, but computer professionals have done a poor job of using the computer to do their job. Engineering disciplines and methodologies are now emerging supported by software tools that address the problems of software development. This paper addresses some of the current software engineering methodologies as a backdrop for the general evaluation of computer assisted software engineering (CASE) tools from actual installation of and experimentation with some specific tools.

Wilcox, Lawrence M.

1993-01-01

124

Internal combustion engine  

Microsoft Academic Search

This patent describes improvement in a 2-cycle, diesel cycle internal combustion engine comprising a single in-line engine block, internal wall surfaces defining at least one cylinder within the engine block, the central longitudinal axis of each cylinder being within a common plane extending longitudinally of the engine block, the axially extending internal wall surface of each cylinder being closed at

H. G. Evans; S. Speer

1991-01-01

125

Engineer Your Life  

NSDL National Science Digital Library

This website is primarily a guide to engineering for high school girls. It also includes sections for parents and advisers, engineers, and middle school girls. There are several sections to the site which demonstrate the appeal and success of women in Engineering, these sections include: "Why Engineering?", "Meet Inspiring Women", "Find Your Dream Job", and "Making it Happen".

2008-12-02

126

Cascade thermoacoustic engine  

Microsoft Academic Search

Over the past several years, Los Alamos has successfully fabricated and tested traveling wave thermoacoustic heat engines having efficiencies much greater than those of traditional standing wave thermoacoustic engines. Unfortunately, Gedeon streaming effects present in these traveling wave engines has required using fluid flow ``diodes'' having greater complexity than desired. The cascade thermoacoustic engine recently fabricated and tested at Los

D. L. Gardner; G. W. Swift

2003-01-01

127

Systems engineering management plans  

Microsoft Academic Search

The Systems Engineering Management Plan (SEMP) is a comprehensive and effective tool used to assist in the management of systems engineering efforts. It is intended to guide the work of all those involved in the project. The SEMP is comprised of three main sections: technical project planning and control, systems engineering process, and engineering specialty integration. The contents of each

Tamara S

2009-01-01

128

Internal combustion propulsion engine  

Microsoft Academic Search

An internal combustion propulsion engine is described which includes: a spherical engine body having an internal combustion chamber, the engine body being provided with a radially projecting nozzle which has an outwardly divergent conical exhaust opening centrally disposed therein, the nozzle being an extension in the wall of the engine body; a plurality of spaced support struts attached to and

Sing

1988-01-01

129

Alternative Automobile Engines  

ERIC Educational Resources Information Center

Requirements for cleaner and more efficient engines have stimulated a search for alternatives to the conventional spark-ignition engine. So far, the defects of the alternative engines are clearer than the virtues. The following engines are compared: spark ignition, diesel, vapor-cycle, Stirling, and gas turbine. (Author/MA)

Wilson, David Gordon

1978-01-01

130

Control of jet engines  

Microsoft Academic Search

Feedback control has always been an essential part of jet engines because they operate at or near their mechanical or aerothermal limitations. In this paper, the basics of controlling an engine while satisfying numerous constraints will be reviewed. The emphasis will be on commercial engines though most of the material is also applicable to military engines. In the first part,

H Austin Spang III; Harold Brown

1999-01-01

131

Single rotor turbine engine  

Microsoft Academic Search

There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial

Platts; David A

2002-01-01

132

Engineering: Noun or Verb?  

ERIC Educational Resources Information Center

Far and away, the issue causing the most concern--and the most excitement--among technology educators is "engineering." Some technology teachers see engineering as an invigorating new direction for the field. To them, engineering is the pinnacle of technological careers, and "engineering education" is a logical step forward for the profession…

Foster, Patrick N.

2005-01-01

133

Exo-Skeletal Engine: Novel Engine Concept  

NASA Technical Reports Server (NTRS)

The exo-skeletal engine concept represents a new radical engine technology with the potential to substantially revolutionize engine design. It is an all-composite drum-rotor engine in which conventionally heavy shafts and discs are eliminated and are replaced by rotating casings that support the blades in spanwise compression. Thus the rotating blades are in compression rather than tension. The resulting open channel at the engine centerline has immense potential for jet noise reduction and can also accommodate an inner combined-cycle thruster such as a ramjet. The exo-skeletal engine is described in some detail with respect to geometry, components, and potential benefits. Initial evaluations and results for drum rotors, bearings, and weights are summarized. Component configuration, assembly plan, and potential fabrication processes are also identified. A finite element model of the assembled engine and its major components is described. Preliminary results obtained thus far show at least a 30-percent reduction of engine weight and about a 10-dB noise reduction, compared with a baseline conventional high-bypass-ratio engine. Potential benefits in all aspects of this engine technology are identified and tabulated. Quantitative assessments of potential benefits are in progress.

Chamis, Cristos C.; Blankson, Isaiah M.

2004-01-01

134

Software Engineering Guidebook  

NASA Technical Reports Server (NTRS)

The Software Engineering Guidebook describes SEPG (Software Engineering Process Group) supported processes and techniques for engineering quality software in NASA environments. Three process models are supported: structured, object-oriented, and evolutionary rapid-prototyping. The guidebook covers software life-cycles, engineering, assurance, and configuration management. The guidebook is written for managers and engineers who manage, develop, enhance, and/or maintain software under the Computer Software Services Contract.

Connell, John; Wenneson, Greg

1993-01-01

135

Space Transportation Main Engine  

NASA Astrophysics Data System (ADS)

The topics are presented in viewgraph form and include the following: Space Transportation Main Engine (STME) definition, design philosophy, robust design, maximum design condition, casting vs. machined and welded forgings, operability considerations, high reliability design philosophy, engine reliability enhancement, low cost design philosophy, engine systems requirements, STME schematic, fuel turbopump, liquid oxygen turbopump, main injector, and gas generator. The major engine components of the STME and the Space Shuttle Main Engine are compared.

Monk, Jan C.

1992-07-01

136

The Engineer Online  

NSDL National Science Digital Library

The Engineer Online is a large news site based in the UK. It combines the content of six industry magazines, with themes of general engineering, design engineering, process engineering, metalworking production, control and instrumentation, and integrated manufacturing solutions. Many articles describe important breakthroughs and new products, while others deal with government policies, university research, or business news. Nearly every engineering discipline is covered, and they can all be browsed through a convenient channel bar. The site is usually updated daily.

2006-01-06

137

Teaching Engineering Practices  

NASA Astrophysics Data System (ADS)

Engineering is featured prominently in the Next Generation Science Standards (NGSS) and related reform documents, but how its nature and methods are described is problematic. This paper is a systematic review and critique of that representation, and proposes that the disciplinary core ideas of engineering (as described in the NGSS) can be disregarded safely if the practices of engineering are better articulated and modeled through student engagement in engineering projects. A clearer distinction between science and engineering practices is outlined, and prior research is described that suggests that precollege engineering design can strengthen children's understandings about scientific concepts. However, a piecemeal approach to teaching engineering practices is unlikely to result in students understanding engineering as a discipline. The implications for science teacher education are supplemented with lessons learned from a number of engineering education professional development projects.

Cunningham, Christine M.; Carlsen, William S.

2014-03-01

138

Engineering Case Studies  

NSDL National Science Digital Library

This website on Engineering Case Studies has been developed by Geza Kardos from the Department of Mechanical and Aerospace Engineering and Neal Holtz from the Department of Civil and Environmental Engineering at Carleton University, Ottawa, Canada, in collaboration with the RHIT Logo Rose-Hulman Institute of Technology in Terre Haute, Indiana, and the American Society for Engineering Education, and the Canadian Design Engineering Network. They have gathered together a collection of information on engineering cases which provide accounts of real engineering projects. The collection of over 250 cases is intended for use in engineering education but may also be of interest to armchair engineers. Abstracts provide an overview of the case and a search function and classification system help visitors navigate the collection. They also provide an overview on how to write engineering cases, how to use engineering cases in the classroom, and "a short treatise on the use of engineering cases." Workshop notes and background on using engineering cases to introduce more design content into the engineering curriculum may also be of interest to educators.

139

Careers in Engineering Technologies  

NSDL National Science Digital Library

In this interactive activity produced for Teachers' Domain, investigate three possible career paths in engineering technologies: research and development; manufacturing and construction; and inspection, testing, and repair. Explore each path to learn more about the education and experience required for particular jobs such as drafter, materials testing technician, chemical engineering technician, civil engineering technician, robotics technician, manufacturing engineering technologist, aerospace engineering technician, electronic engineering technician, and non-destructive testing technician. The interactive is accompanied by a background essay, standards alignment, and discussion questions.

2012-05-23

140

Improving engineering effectiveness  

NASA Technical Reports Server (NTRS)

Methodologies to improve engineering productivity were investigated. The rocky road to improving engineering effectiveness is reviewed utilizing a specific semiconductor engineering organization as a case study. The organization had a performance problem regarding new product introductions. With the help of this consultant as a change agent the engineering team used a systems approach to through variables that were effecting their output significantly. Critical factors for improving this engineering organization's effectiveness and the roles/responsibilities of management, the individual engineers and the internal consultant are discussed.

Fiero, J. D.

1985-01-01

141

Engineering Ethics in the Subject of Engineering History  

NASA Astrophysics Data System (ADS)

Engineering ethics has been focused in the field of engineering education since the introduction of accreditation system of engineering education. In this paper, contents of the subject of engineering history are examined and discussed from the viewpoints of education of engineering ethics through a practical case of civil engineering history in a college. For the first step, codes of engineering ethics regulated in various engineering organizations are analyzed and the common contents are extracted to set the requirements for the education of engineering ethics. Then contents of the subject of engineering history are examined according to the requirements. Finally, conditions of engineering history for engineering ethics are discussed.

Isohata, Hiroshi

142

Learning Requirements Engineering within an Engineering Ethos  

Microsoft Academic Search

An interest in educating software developers within an engineering ethos may not align well with the characteristics of the discipline, nor address the underlying concerns of software practitioners. Education for software development needs to focus on creativity, adaptability and the ability to transfer knowledge. A change in the way learning is undertaken in a core Software Engineering unit within a

Jocelyn Armarego

143

Infusing Engineering Concepts: Teaching Engineering Design  

ERIC Educational Resources Information Center

Engineering has gained considerable traction in many K-12 schools. However, there are several obstacles or challenges to an effective approach that leads to student learning. Questions such as where engineering best fits in the curriculum; how to include it authentically and appropriately; toward what educational end; and how best to prepare…

Daugherty, Jenny

2012-01-01

144

The responsibilities of engineers.  

PubMed

Knowledge of the responsibilities of engineers is the foundation for answering ethical questions about the work of engineers. This paper defines the responsibilities of engineers by considering what constitutes the nature of engineering as a particular form of activity. Specifically, this paper focuses on the ethical responsibilities of engineers qua engineers. Such responsibilities refer to the duties acquired in virtue of being a member of a group. We examine the practice of engineering, drawing on the idea of practices developed by philosopher Alasdair MacIntyre, and show how the idea of a practice is important for identifying and justifying the responsibilities of engineers. To demonstrate the contribution that knowledge of the responsibilities of engineers makes to engineering ethics, a case study from structural engineering is discussed. The discussion of the failure of the Sleipner A Platform off the coast of Norway in 1991 demonstrates how the responsibilities of engineers can be derived from knowledge of the nature of engineering and its context. PMID:23996060

Smith, Justin; Gardoni, Paolo; Murphy, Colleen

2014-06-01

145

NASA Systems Engineering Handbook  

NASA Technical Reports Server (NTRS)

This handbook brings the fundamental concepts and techniques of systems engineering to NASA personnel in a way that recognizes the nature of NASA systems and environment. It is intended to accompany formal NASA training courses on systems engineering and project management when appropriate, and is designed to be a top-level overview. The concepts were drawn from NASA field center handbooks, NMI's/NHB's, the work of the NASA-wide Systems Engineering Working Group and the Systems Engineering Process Improvement Task team, several non-NASA textbooks and guides, and material from independent systems engineering courses taught to NASA personnel. Five core chapters cover systems engineering fundamentals, the NASA Project Cycle, management issues in systems engineering, systems analysis and modeling, and specialty engineering integration. It is not intended as a directive. Superseded by: NASA/SP-2007-6105 Rev 1 (20080008301).

Shishko, Robert; Aster, Robert; Chamberlain, Robert G.; Mcduffee, Patrick; Pieniazek, Les; Rowell, Tom; Bain, Beth; Cox, Renee I.; Mooz, Harold; Polaski, Lou

1995-01-01

146

Minority Engineering Scholarships, 2012.  

National Technical Information Service (NTIS)

Scholarships for Minority Students Studying Engineering and Science: Support will make scholarships available to minority students interested in engineering and science and will increase significantly the number of minority students that Missouri S&T can ...

C. Elmore

2014-01-01

147

Advanced Chemical Engineering Research.  

National Technical Information Service (NTIS)

Ten advanced chemical engineering research projects were executed at the US Army Natick RDE Center over a three month period by students of the David H. Koch School of Chemical Engineering Practice, administered by the Massachusetts Institute of Technolog...

T. A. Hatton

1994-01-01

148

Intro to Engineering  

NSDL National Science Digital Library

Students are introduced to the basic principles behind engineering and the types of engineering while learning about an always-popular topicâthe Olympics. The involvement of engineering in modern sports is amazing and pervasive. Students learn about the techniques of engineering problem solving, including brainstorming and the engineering design process. The importance of thinking out of the box is stressed through a discussion of the engineering required to build grand, often complex, Olympic event centers. Students review what they know about kinetic and potential energy as they investigate the design of energy-absorbing materials, relating this to the design of lighter, faster and stronger sports equipment to improve athletic performance and protect athletes. Students consider states of matter and material properties as they see the role of chemical engineering in the Olympics. Students also learn about transportation and the environment, and the relationship between architecture and engineering.

Integrated Teaching And Learning Program And Laboratory

149

Rotorcraft convertible engine study  

NASA Technical Reports Server (NTRS)

The objective of the Rotorcraft Convertible Engine Study was to define future research and technology effort required for commercial development by 1988 of convertible fan/shaft gas turbine engines for unconventional rotorcraft transports. Two rotorcraft and their respective missions were defined: a Fold Tilt Rotor aircraft and an Advancing Blade Concept (ABC) rotorcraft. Sensitivity studies were conducted with these rotorcraft to determine parametrically the influence of propulsion characteristics on aircraft size, mission fuel requirements, and direct operating costs (DOC). The two rotorcraft were flown with conventional propulsion systems (separate lift/cruise engines) and with convertible propulsion systems to determine the benefits to be derived from convertible engines. Trade-off studies were conducted to determine the optimum engine cycle and staging arrangement for a convertible engine. Advanced technology options applicable to convertible engines were studied. Research and technology programs were identified which would ensure technology readiness for commercial development of convertible engines by 1988.

Gill, J. C.; Earle, R. V.; Mar, H. M.

1982-01-01

150

Biochemical Engineering Fundamentals  

ERIC Educational Resources Information Center

Discusses a biochemical engineering course that is offered as part of a chemical engineering curriculum and includes topics that influence the behavior of man-made or natural microbial or enzyme reactors. (MLH)

Bailey, J. E.; Ollis, D. F.

1976-01-01

151

Engineering Design Laboratory Guide.  

National Technical Information Service (NTIS)

The document provides a brief description of the systems available for use in the Engineering Design Laboratory at the National Institute of Standards and Technology, Gaithersburg, Maryland. The Engineering Design Laboratory was established to study the p...

A. B. Feeney

1991-01-01

152

Emerald Engineering Articles  

NSDL National Science Digital Library

This webpage from Emerald Publishing features a collection of recently published journals and articles pertaining to engineering technology, in particular, electronics, bio, chemical and medical. Of the 16 engineering journals published by Emerald, 14 are listed in ISI.

2010-11-15

153

Aircraft Engine Emissions. [conference  

NASA Technical Reports Server (NTRS)

A conference on a aircraft engine emissions was held to present the results of recent and current work. Such diverse areas as components, controls, energy efficient engine designs, and noise and pollution reduction are discussed.

1977-01-01

154

LIFE CYCLE ENGINEERING GUIDELINES  

EPA Science Inventory

LCE depends on understanding performance, cost, and environmental implications and translating them into engineering requirements, goals, and specifications. Related decisions are iterative in nature. As the engineering process proceeds from the conceptual to defined, the LCE eva...

155

Student Engineers and Engineer Identity: Campus Engineer Identities as Figured World  

Microsoft Academic Search

The research reported here contributes to understanding how student engineers on an engineering campus in the US mid-continent not only talked about the kinds of people recognized as engineers on campus, but also juxtaposes their talk about “campus engineer identities” with two students' ways of presenting themselves as engineers through engineering project teamwork to argue that campus engineer identities framed

Karen L. Tonso

2006-01-01

156

Payoffs in growth engines  

SciTech Connect

The development history and future potential of the T700/CT7 family of military-helicopter turbine engines are discussed in detail, with an emphasis on the practical advantages of growth and derivative engines over new designs. Particular attention is given to the qualification of the engine and the aircraft/engine installation, the pilot orientation process, and the overall cost. Graphs and tables are provided.

Rowe, D.O. II (GE Aircraft Engines, Cincinnati, OH (USA))

1989-12-01

157

Scientific and Engineering Notation  

NSDL National Science Digital Library

"To understand how engineering notation, the language of technology, works, scientific notation and metric prefixes must first be introduced and studied." This page, by the California Regional Consortium for Engineering Advances in Technological Education, presents a brief tutorial on engineering notation, the difference between scientific and engineering notations, and some practice using each. There is a table of metric prefixes, available for download, and mnemonic devices which help students to remember them.

2011-07-19

158

Teaching Cellular Engineering  

Microsoft Academic Search

Cellular engineering is one of the fastest growing subdisciplines in the field of Biomedical Engineering. It involves the\\u000a application of engineering analysis to understand and control cellular behavior, with the ultimate objective of developing\\u000a novel therapeutic or diagnostic approaches for the clinic or harnessing cellular function for commercial applications. Well-educated\\u000a students in this area need strong foundational knowledge in engineering

Daniel A. Hammer; Richard E. Waugh

2006-01-01

159

Cruise Missile Engines  

NASA Technical Reports Server (NTRS)

Williams International's F107 fanjet engine is used in two types of cruise missiles, Navy-sponsored Tomahawk and the Air Force AGM-86B Air Launched Cruise Missile (ALCM). Engine produces about 600 pounds thrust, is one foot in diameter and weighs only 141 pounds. Design was aided by use of a COSMIC program in calculating airflows in engine's internal ducting, resulting in a more efficient engine with increased thrust and reduced fuel consumption.

1982-01-01

160

Adaptability in Chemical Engineering.  

National Technical Information Service (NTIS)

The adaptability issue for chemical engineering (the ability of chemical engineers to be retrained to work in other fields and for those from other fields to be retrained for work in chemical engineering) will be discussed and illustrated in terms of (1) ...

J. S. Watson

1989-01-01

161

Internal combustion engine  

Microsoft Academic Search

An internal combustion engine is described comprising: an engine block defining a cylinder, a cylinder head closing one end of the cylinder, a power piston in the cylinder, a crank shaft journalled in the engine block at the other end of the cylinder, and a connecting rod pivotally connecting the power piston and the crank shaft. The power piston is

Mroz

1987-01-01

162

Low cost engineering centres  

Microsoft Academic Search

This article investigates the growing trend by major European engineering contracting companies to utilise labour and resources from developing countries in an attempt to reduce costs on overseas projects. In particular, the use of engineering design offices in developing countries as ‘low cost engineering centres’ in an effort to gain competitive advantage.

David J Lawson

1996-01-01

163

Nitinol heat engines  

Microsoft Academic Search

Heat engines have recently been developed which utilize the remarkable properties of a nickel-titanium alloy called Nitinol to convert heat into mechanical energy. The design, principles of operation, and performance characteristics of a small prototype Nitinol heat engine are described. Emphasis is placed on the description of a simple heat engine invented by the author, in which a specially heat-treated

A. D. Johnson

1975-01-01

164

Software Engineering Institute  

NSDL National Science Digital Library

Software Engineering Institute (SEI) is a federally funded research and development center whose objective is to provide leadership in software engineering and in the transition of new software engineering technology into practice. The SEI Information Server provides links to the ongoing research efforts of the ARPA Software and Intelligent Systems Technology Office and an index of information relating to numerous software and computing topics.

165

Engine-Vibration Analyzer  

NASA Technical Reports Server (NTRS)

Proposed circuit would monitor vibration spectrum of engines under test or in service. It could detect subtle out-of-specification conditions and could be programed to shut down engine if an out-of-limits condition develops. Possible uses of monitor are in bench testing automobiles and outboard motors and as a safety device in very critical engine applications.

Tolmei, V. R.

1982-01-01

166

Geoscience Job Search Engine  

NSDL National Science Digital Library

The Scripps Institution of Oceanography at the University of California, San Diego provides the Geoscience Job Search Engine. The search engine lists academic, industry, and student opportunities in the US and other countries. Searchable fields range from aqueous geochemistry to environmental engineering to volcanology.

167

Engineering for All  

ERIC Educational Resources Information Center

As calls for science, technology, engineering, and mathematics (STEM) education at the elementary level become more vociferous, elementary teachers may be wondering whether engineering is meant for "all" students. However, the authors assert that engineering can be taught in inclusive environments. It may be especially empowering for those who…

Lottero-Perdue, Pamela S.; Lovelidge, Sarah; Bowling, Erin

2010-01-01

168

Materials Science and Engineering  

Microsoft Academic Search

Metals and alloys are useful engineering materials. Their excellent engineering properties result in their widespread application in engineering designs. Alloys based on iron are ferrous alloys. Iron and its alloys, specifically steel, account for over 83% of the world’s production of total metals and alloys. This is mainly because of their combination of high strength, toughness, high temperature properties, and

Rumana Akmal; Naim Akmal; Arthur M. Usmani

2005-01-01

169

Biology for Engineers CD  

NSDL National Science Digital Library

Biological Information Handling: Essentials for Engineers, a CD developed by a team at the University of Washington led by HHMI Professor Mary Lidstrom, is a self-paced, interactive tutorial to teach biology fundamentals to engineers. The CD lets engineering students understand the biological processes involved in information transfer of the cell (replication, transcription, and translation).

Mary Lidstrom (University of Washington;); David Farkas (University of Washington;); Quan Zhou (University of Washington;); Cate Speake (University of Washington;); Alicia Ann McBride (University of Washington;); Patricia Kirkham (University of Washington;)

2010-05-27

170

Development of Rock Engineering  

NSDL National Science Digital Library

This chapter describes the development of rock engineering and provides introductory descriptions of the following concepts: rockbursts and elastic theory, discontinuous rock masses, engineering rock mechanics, geological data collection, laboratory testing of rock, rock mass classification, rock mass strength, in situ stress measurements, groundwater problems, rock reinforcement, excavation methods in rock, and analytical tools used in rock engineering.

2008-08-21

171

Faces of GPM: Engineers  

NSDL National Science Digital Library

This short video includes interviews with several key engineers who built and tested the Global Precipitation Measurement (GPM) Core Observatory at NASA Goddard Space Flight Center. Interviewees include: Beth Weinstein, GPM integration and test engineer; Lisa Bartusek, GPM deputy mission systems engineer; and Carlton Peters, associate branch head at NASA Goddard Space Flight Center and GPM thermal branch development lead.

172

Principal engineering design questions  

Microsoft Academic Search

The definition of principal questions is key to providing a common direction in the developing field of engineering design research. A general engineering framework can be utilized to identify these principal questions. This general framework rigorously defines variables and indicates relationships among the fundamental engineering variables of geometric form, material form, performance, behavior, environmental constraints, environmental conditions, space, and time.

Ronald Samuel LaFleur

1992-01-01

173

Educating More Engineers  

ERIC Educational Resources Information Center

Indicates that there will be a substantially increased demand for environmental engineers during the next few years, especially in the areas of water pollution control and sanitary engineering. Educators see the need for additional engineering graduates and for improved environmental training programs in schools. (JR)

Environmental Science and Technology, 1973

1973-01-01

174

Putting the Engine Back in Engineering  

NSDL National Science Digital Library

Electrical and Computer Engineering programs across the nation are seeing a decrease in engineering student enrollment and retention. Electronic systems and components these days are far too small and complex to allow an inquisitive student to explore and satisfy their curiosity about how these gadgets work. These students often take to exploring mechanical systems instead and are thus led away from Electrical and Computer Engineering. Similarly, with advances in computer simulations of engineering circuits and models that produce realistic results, engineering programs have transitioned away from physical hardware and hands-on experimentation. This trend away from having students being able to "tinker" with real hardware is detrimental to their development into well rounded engineers. In addition, as globalization continues, engineers must broaden their team-work and technical skills. This paper describes a hardware, software and courseware learning ecosystem that has been created to capture student attention and develop a broader skill set. Laboratory and in-class exercises use POGIL (Process Oriented Guided Inquiry Learning) based laboratory modules to engage students in learning through exploration, critical thinking, and team and cooperative participation exercises. Laboratory and in-class exercises are designed to teach the student how to explore a new technology to be able to learn more about it. In fact, learning how to learn is a key outcome. Laboratory hardware is designed to provide easy connection to real-world devices and allow students to extend their explorations from classroom theory to the practical application of technology they are learning.

Cady, Fred; Mclellan, John

2011-05-25

175

Armored Geomembrane Cover Engineering  

PubMed Central

Geomembranes are an important component of modern engineered barriers to prevent the infiltration of stormwater and runoff into contaminated soil and rock as well as waste containment facilities—a function generally described as a geomembrane cover. This paper presents a case history involving a novel implementation of a geomembrane cover system. Due to this novelty, the design engineers needed to assemble from disparate sources the design criteria for the engineering of the cover. This paper discusses the design methodologies assembled by the engineering team. This information will aid engineers designing similar cover systems as well as environmental and public health professionals selecting site improvements that involve infiltration barriers.

Foye, Kevin

2011-01-01

176

Overview of Engineering  

NSDL National Science Digital Library

Engineering is a vast discipline. There are so many different fields contained within this broad heading that a brief overview is sometimes necessary. This website, created by Engineering Technology Pathways, addresses many different fields of engineering and shows useful statistics about each. This presentation concentrates on careers such as: aerospace, chemical, civil, electrical, environmental, industrial, mechanical, and nuclear engineering. The page is formatted as a PowerPoint presentation and follows a logical order that can be easily translated to the classroom. Overall, this is a good resource for instructors and students wanting to learn more about different possible career paths in the field of engineering.

Vance, Brian

2010-10-07

177

Armored geomembrane cover engineering.  

PubMed

Geomembranes are an important component of modern engineered barriers to prevent the infiltration of stormwater and runoff into contaminated soil and rock as well as waste containment facilities--a function generally described as a geomembrane cover. This paper presents a case history involving a novel implementation of a geomembrane cover system. Due to this novelty, the design engineers needed to assemble from disparate sources the design criteria for the engineering of the cover. This paper discusses the design methodologies assembled by the engineering team. This information will aid engineers designing similar cover systems as well as environmental and public health professionals selecting site improvements that involve infiltration barriers. PMID:21776229

Foye, Kevin

2011-06-01

178

Engineering Technical Review Planning Briefing.  

National Technical Information Service (NTIS)

The general topics covered in the engineering technical planning briefing are: (1) overviews of NASA, Marshall Space Flight Center (MSFC), and Engineering, (2) the NASA Systems Engineering(SE) Engine and its implementation, (3) the NASA Project Life Cycle...

T. Gardner

2012-01-01

179

What Chemistry To Teach Engineers?  

ERIC Educational Resources Information Center

Examines possible general chemistry topics that would be most relevant and practical for engineering majors. Consults the Accreditation Board for Engineering and Technology (ABET), engineering textbooks, texts from other required subjects, and practicing engineers for recommendations. (Contains 24 references.) (WRM)

Hawkes, Stephen J.

2000-01-01

180

Airbreathing Engines for Space Shuttle.  

National Technical Information Service (NTIS)

The requirements imposed on the airbreathing engines by the shuttle mission and some results from engine design studies are discussed. In particular, some of the engine system weight study results are presented, potential problem areas and required engine...

A. J. Glassman S. M. Nosek W. L. Stewart

1972-01-01

181

RS-84 Engine  

NASA Technical Reports Server (NTRS)

The RS-84 is the first reusable hydrocarbon staged combustion liquid rocket engine. This engine is being developed to meet NASA s crew safety goals with a highly reliable and low cost main engine as a part of the NASA Space Launch Initiative program for the next generation reusable launch system. The NASA-MSFC and Rocketdyne team brings over 50 years of successful rocket engine development experience to meet the challenges of this new program. This team s extensive design database has been anchored with almost five decades of hydrocarbon rocket engine development and flight operations experience including Delta, Atlas, and Saturn vehicles and nearly three decades of successfully operating the world s only reusable pump-fed rocket engine, the Space Shuttle Main Engine. The team also fully benefits from the proven and experienced engineering staffs that recently completed the successful MC-1 FASTRAC , XRS-2200, and RS-68 engine development programs and the ongoing IPD and RS-76 technology development. Advances in integrated parametric design and analysis tools, advanced materials knowledge base, and state-of-the-art fabrication processes anchored and refined during the recent engine development programs are already being used by the team to design this engine.

Stegman, E.

2003-01-01

182

Uprated orbital maneuvering engine  

NASA Technical Reports Server (NTRS)

The baseline orbital maneuvering system (OMS) of the Space Shuttle has the potential for significant performance uprating, leading to increased Shuttle payload capability. The baseline OMS, its requirements, and its operational characteristics are described. Potential uprating approaches are discussed and the logic for selection of a higher performance engine is presented. It is shown that a higher performance engine essentially means an engine operating at higher pressures and that a pump-fed engine is necessary for the higher pressure operation. A description of the uprated OMS engine, including requirements, baseline engine characteristics, and significant engine issues, is presented. Discussion of the program underway at the NASA Lyndon B. Johnson Space Center to attain additional insight into these issues, through the performance of a component demonstration program, includes the technical objectives, approach, and program schedule. The plans for further development are presented, culminating in the plans for integration with the Orbiter and the Shuttle system.

Hooper, J. C.

1984-01-01

183

Aircraft Engine Systems  

NASA Technical Reports Server (NTRS)

The objective is to develop the capability to numerically model the performance of gas turbine engines used for aircraft propulsion. This capability will provide turbine engine designers with a means of accurately predicting the performance of new engines in a system environment prior to building and testing. The 'numerical test cell' developed under this project will reduce the number of component and engine tests required during development. As a result, the project will help to reduce the design cycle time and cost of gas turbine engines. This capability will be distributed to U.S. turbine engine manufacturers and air framers. This project focuses on goals of maintaining U.S. superiority in commercial gas turbine engine development for the aeronautics industry.

Veres, Joseph P.

2003-01-01

184

Diesel engine catalytic combustor system. [aircraft engines  

NASA Technical Reports Server (NTRS)

A low compression turbocharged diesel engine is provided in which the turbocharger can be operated independently of the engine to power auxiliary equipment. Fuel and air are burned in a catalytic combustor to drive the turbine wheel of turbine section which is initially caused to rotate by starter motor. By opening a flapper value, compressed air from the blower section is directed to catalytic combustor when it is heated and expanded, serving to drive the turbine wheel and also to heat the catalytic element. To start, engine valve is closed, combustion is terminated in catalytic combustor, and the valve is then opened to utilize air from the blower for the air driven motor. When the engine starts, the constituents in its exhaust gas react in the catalytic element and the heat generated provides additional energy for the turbine section.

Ream, L. W. (inventor)

1984-01-01

185

Rehabilitation Engineering: What is Rehabilitation Engineering?  

MedlinePLUS

... individual writes sentences with his thoughts using a brain-computer interface system. Source: The Wadsworth Center, New York State ... complex rehabilitation engineering is the design of sophisticated brain computer interfaces that allow a severely disabled individual to operate ...

186

Senior Engineer - Head of Paranal Engineering Department  

NASA Astrophysics Data System (ADS)

Purpose and scope of the position: The role of the Paranal Engineering Department is to carry out the assembly, integration and troubleshooting of the VLT (Very Large Telescope), the instrumentation of the VLT and of the VLTI (VLT Interferometry), of the VST (VLT Survey Telescope), VISTA (Visible and Infrared Survey Telescope), of all the facilities required on the Observatory (Power Station, Air Compressors, Chillers, etc), and to provide general engineering support of maintenance, troubleshooting and fault repair to nightly operations.

2005-03-01

187

Teaching cellular engineering.  

PubMed

Cellular engineering is one of the fastest growing subdisciplines in the field of Biomedical Engineering. It involves the application of engineering analysis to understand and control cellular behavior, with the ultimate objective of developing novel therapeutic or diagnostic approaches for the clinic or harnessing cellular function for commercial applications. Well-educated students in this area need strong foundational knowledge in engineering science, chemistry, and cell and molecular biology. In undergraduate curricula, the challenge is to include essential engineering skills plus appropriate levels of training in chemistry and biology while satisfying accreditation-mandated breadth in engineering training. At the graduate level, educators must accommodate students with diverse backgrounds and provide them with both a state-of-the-art understanding of the life sciences and the most advanced engineering skills. Engineering curricular content should include mechanics and materials, physical chemistry, transport phenomena, and control theory. Training from faculty with appointments and research programs in the life sciences is generally recommended, and additional life science content should also be integrated within the engineering curriculum. A capstone course in cellular engineering that includes opportunities for students to have hands-on experiences with state-of-the-art laboratory techniques is highly recommended. PMID:16450196

Hammer, Daniel A; Waugh, Richard E

2006-02-01

188

Staged combustion with piston engine and turbine engine supercharger  

DOEpatents

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O'Brien, Kevin C. (San Ramon, CA)

2011-11-01

189

Diesel engine exhaust emissions  

SciTech Connect

According to the results of tests carried out on monorail diesel engines in the Federal Republic of Germany, nitrogen oxides, rather than carbon monoxide, are the most dangerous components of exhaust emissions, and require larger volumes of air to dilute them. The harmful gas concentrations which are measured and the maximum permissible concentrations of the gases exhausted by diesel engines determine the necessary amounts of air by which the fumes are diluted. Opinions on maximum permissible values, especially in the case of nitrogen oxides, and the methods used for determining the amount of air necessary for dilution, vary from country to country. In general, though, only diesel engines which produce extremely small amounts of harmful gases should be used underground. If a diesel engine draws in air containing methane, the concentration of harmful gases emitted in the exhaust fumes varies according to methane content, engine speed, and engine load.

Not Available

1980-01-01

190

The Engineering Exchange  

NSDL National Science Digital Library

Under the banner of "developed by engineers for engineers," the Engineering Exchange functions as a global educational networking community for engineers. The materials on the site are divided into eight primary areas, which include Groups, Videos, Images, Events, Blogs, and Resources. Sections such as the Top Blog Posts showcase some of the most popular insights, which include updates like Manufacturing Productivity Through Design Efficiency and technical pieces on engineering software. Moving on, the Groups area is a great way for visitors to learn from other professionals with sub-sections that include Green Engineering, Water & Wastewater, and Solar Power Development. The Videos section is another gem that features over 1400 items such as Additive Manufacturing: When will it arrive? and The Safest Key-Smart Key. Additionally, visitors can search all of the videos and create their own playlists.

Matheson, Marshall

2013-01-01

191

Information sources in engineering  

SciTech Connect

This book was designed to serve as a guide to the wide range of sources of information used by engineers. The first part of this research tool describes the major primary and secondary sources for information (including online systems) that are relevant to all engineering disciplines. The second part provides the same information for each of the 19 specific engineering disciplines, with each chapter being written by an expert in the particular branch of engineering. This new edition of a work previously published under the title Use of Engineering Literature has been completely re-written with a new team of contributors. There is greater emphasis on disciplines basic to all engineering areas, e.g., fluid mechanics, thermodynamics, and materials science. Recent developments covered include robotics, CAD/CAM systems, renewable energy sources, and the use of online systems for information retrieval.

Anthony, L.J.

1985-01-01

192

Isolated quantum heat engine.  

PubMed

We present a theoretical and numerical analysis of a quantum system that is capable of functioning as a heat engine. This system could be realized experimentally using cold bosonic atoms confined to a double well potential that is created by splitting a harmonic trap with a focused laser. The system shows thermalization, and can model a reversible heat engine cycle. This is the first demonstration of the operation of a heat engine with a finite quantum heat bath. PMID:22463540

Fialko, O; Hallwood, D W

2012-02-24

193

Engineered human vaccines  

SciTech Connect

The limitations of human vaccines in use at present and the design requirements for a new generation of human vaccines are discussed. The progress in engineering of human vaccines for bacteria, viruses, parasites, and cancer is reviewed, and the data from human studies with the engineered vaccines are discussed, especially for cancer and AIDS vaccines. The final section of the review deals with the possible future developments in the field of engineered human vaccines and the requirement for effective new human adjuvants.

Sandhu, J.S. (Mount Sinai Hospital, Toronto, Ontario (Canada). Div. of Immunology and Neurobiology)

1994-01-01

194

STV engine design considerations  

NASA Technical Reports Server (NTRS)

The topics covered include the following: (1) engine design criteria and issues; (2) design requirements for man rating; (3) test requirements for man rating; (4) design requirements for space basing; (5) engine operation requirements; (6) health monitoring; (7) lunar transfer vehicle (LTV) feed system; (8) lunar excursion vehicle (LEV) propellant system; (9) area ratio gimbal angle limits; (10) reaction control system; and (11) engine configuration and characteristics. This document is presented in viewgraph form.

1991-01-01

195

Aircraft engine nozzle  

NASA Technical Reports Server (NTRS)

A variable area exit nozzle arrangement for an aircraft engine was a substantially reduced length and weight which comprises a number of longitudinally movable radial vanes and a number of fixed radial vanes. The movable radial vanes are alternately disposed with respect to the fixed radial vanes. A means is provided for displacing the movable vanes along the longitudinal axis of the engine relative to the fixed radial vanes which extend across the main exhaust flow of the engine.

Sorensen, N. E.; Latham, E. A. (inventors)

1980-01-01

196

Systems Engineering and Complexity  

Microsoft Academic Search

The interaction between the fields of systems engineering and complexity theory is only beginning. This paper quickly explores the two fields to seek the relationship between them. Systems engineering is usually defined in terms of the activities that are used in the field: mission\\/purpose definition, requirements engineering, system architecting, system implementation, technical analysis, technical management\\/leadership, scope management, and verification\\/validation. Complexity

Eric Honour

197

Engineering News - Winter 1993  

NSF Publications Database

... OSTP). Faculty Internship Program Reaps Rewards One of the Directorate for Engineering's (ENG's ... research to the solution of real problems. One such joint faculty/manufacturer study matched ...

198

Rotary engine cooling system  

NASA Technical Reports Server (NTRS)

A rotary engine has a substantially trochoidal-shaped housing cavity in which a rotor planetates. A cooling system for the engine directs coolant along a single series path consisting of series connected groups of passages. Coolant enters near the intake port, passes downwardly and axially through the cooler regions of the engine, then passes upwardly and axially through the hotter regions. By first flowing through the coolest regions, coolant pressure is reduced, thus reducing the saturation temperature of the coolant and thereby enhancing the nucleate boiling heat transfer mechanism which predominates in the high heat flux region of the engine during high power level operation.

Jones, Charles (Inventor); Gigon, Richard M. (Inventor); Blum, Edward J. (Inventor)

1985-01-01

199

Construction of Diesel Engines.  

National Technical Information Service (NTIS)

Shows the general structure of several types of diesel engines and the different frame types, clyinder parts, pistons, piston rings, connecting assemblies, shafts, bearings, camshafts, and rocker assemblies.

1994-01-01

200

Tripropellant Engine Study  

NASA Technical Reports Server (NTRS)

The feasibility of modifying the space shuttle main engine (SSME) for dual mode operation was investigated. Various high power cycle engine configurations derived from the SSME were configurations that will allow sequential burning of LOX/hydrocarbon and LOX/hydrogen were studied in order to identify concepts that make maximum use of SSME hardware and best satisfy the dual mode booster engine system application. Engine cycles were formulated for LOX/RP-1, LOX/CH4, and LOX/C3H8 propellants. Flow rates and operating cycles were established and the adaptability of the major components of the SSME was evaluated.

Wheeler, D. B.

1977-01-01

201

Tripropellant engine study  

NASA Technical Reports Server (NTRS)

The potential for converting the space shuttle main engine (SSME) to a dual-fuel, dual-mode engine using LOX/hydrocarbon propellants in mode 1 and LOX/H2 in mode 2 was examined. Various engine system concepts were formulated that included staged combustion and gas generator turbine power cycles, and LOX/RP-1, LOX/CH4, and LOX/C3H8 mode 1 propellants. Both oxidizer and fuel regenerative cooling were considered. All of the SSME major components were examined to determine their adaptability to the candidate dual-fuel engines.

Wheeler, D. B.; Kirby, F. M.

1978-01-01

202

Rocket Engine Oscillation Diagnostics  

NASA Technical Reports Server (NTRS)

Rocket engine oscillating data can reveal many physical phenomena ranging from unsteady flow and acoustics to rotordynamics and structural dynamics. Because of this, engine diagnostics based on oscillation data should employ both signal analysis and physical modeling. This paper describes an approach to rocket engine oscillation diagnostics, types of problems encountered, and example problems solved. Determination of design guidelines and environments (or loads) from oscillating phenomena is required during initial stages of rocket engine design, while the additional tasks of health monitoring, incipient failure detection, and anomaly diagnostics occur during engine development and operation. Oscillations in rocket engines are typically related to flow driven acoustics, flow excited structures, or rotational forces. Additional sources of oscillatory energy are combustion and cavitation. Included in the example problems is a sampling of signal analysis tools employed in diagnostics. The rocket engine hardware includes combustion devices, valves, turbopumps, and ducts. Simple models of an oscillating fluid system or structure can be constructed to estimate pertinent dynamic parameters governing the unsteady behavior of engine systems or components. In the example problems it is shown that simple physical modeling when combined with signal analysis can be successfully employed to diagnose complex rocket engine oscillatory phenomena.

Nesman, Tom; Turner, James E. (Technical Monitor)

2002-01-01

203

Engineer On A Disk  

NSDL National Science Digital Library

Engineer On A Disk is a great resource for any undergraduate engineering student studying for a fundamentals exam. The material covered on the site spans nearly every engineering discipline and is maintained by a professor at Grand Valley State University. Topics include circuits, materials, computer programming and hardware, mechanical device design, mechatronics, quality control, manufacturing processes, and general reference. Each section is huge, with many items that are discussed in detail. The HTML version of Engineer On A Disk is quite difficult to navigate; however, the Adobe Acrobat (.pdf) version is much better.

Jack, Hugh.

1993-01-01

204

Vehicle/engine integration  

NASA Astrophysics Data System (ADS)

VEHICLE/ENGINE Integration Issues are explored for orbit transfer vehicles (OTV's). The impact of space basing and aeroassist on VEHICLE/ENGINE integration is discussed. The AOTV structure and thermal protection subsystem weights were scaled as the vehicle length and surface was changed. It is concluded that for increased allowable payload lengths in a ground-based system, lower length-to-diameter (L/D) is as important as higher mixture ration (MR) in the range of mid L/D ATOV's. Scenario validity, geometry constraints, throttle levels, reliability, and servicing are discussed in the context of engine design and engine/vehicle integration.

Cooper, L. P.; Vinopal, T. J.; Florence, D. E.; Michel, R. W.; Brown, J. R.; Bergeron, R. P.; Weldon, V. A.

1984-04-01

205

Diesel Engine Alternatives  

SciTech Connect

There are basically three different modes of combustion possible for use in reciprocating engines. These include, diffusion burning, as occurs in current diesel engines, flame propagation combustion such as used in conventional SI engines, and homogeneous combustion such as is used in the SwRI HCCI engine. Diesel engines currently offer significant fuel consumption benefits relative to other powerplants for on and off road applications; however, costs and efficiency may become problems as the emissions standards become even more stringent. This presentation presents a discussion of the potentials of HCCI and flame propagation engines as alternatives to the diesel engines. It is suggested that as the emissions standards become more and more stringent, the advantages of the diesel may disappear. The potential for HCCI is limited by the availability of the appropriate fuel. The potential of flame propagation engines is limited by several factors including knock, EGR tolerance, high BMEP operation, and throttling. These limitations are discussed in the context of potential for improvement of the efficiency of the flame propagation engine.

Ryan, T

2003-08-24

206

SOFIA Engineer Thomas Keilig  

NASA Video Gallery

Thomas Keilig, the German Aerospace Agency's (DLR) chief telescope engineer for the Stratospheric Observatory for Infrared Astronomy (SOFIA), comments on technical details of the high-tech primary ...

207

Engineer a Coin Sorter  

NSDL National Science Digital Library

Students learn about the engineering design process and how it is used to engineer products for everyday use. Students individually brainstorm solutions for sorting coins and draw at least two design ideas. They work in small groups to combine ideas and build a coin sorter using common construction materials such as cardboard, tape, straws and fabric. Students test their coin sorters, make revisions and suggest ways to improve their designs. By designing, building, testing and improving coin sorters, students come to understand how the engineering design process is used to engineer products that benefit society.

Integrated Teaching And Learning Program

208

Integrated engine shroud for gas turbine engines  

SciTech Connect

This patent describes improvement in a gas turbine engine of the type having a core engine, a shroud surrounding the core engine, a tubular outer nacelle defining an annular bypass duct therebetween and a fan disposed in the nacelle inlet for directing compressed gas flow into and through the bypass duct, the shroud formed in two axially divided halves, each having a generally C shaped center cross section with radially extending flanges secured to the axial edges of the center section. The improvement comprises: each shroud comprises an integral panel having a honeycomb core and continuous facesheets bonded to both surfaces, wherein corner regions between the center section and the flanges are comprised of a honeycomb core having a higher density than the honeycomb core in the center section and flanges.

Layland, M.J.

1992-01-28

209

Engine and method for operating an engine  

DOEpatents

A method of operating an engine is provided. The method may include supplying a combustible combination of reactants to a combustion chamber of the engine, which may include supplying a first hydrocarbon fuel, hydrogen fuel, and a second hydrocarbon fuel to the combustion chamber. Supplying the second hydrocarbon fuel to the combustion chamber may include at least one of supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into an intake system of the engine and supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into the combustion chamber. Additionally, the method may include combusting the combustible combination of reactants in the combustion chamber.

Lauper, Jr., John Christian (East Peoria, IL); Willi, Martin Leo (Dunlap, IL); Thirunavukarasu, Balamurugesh (Peoria, IL); Gong, Weidong (Dunlap, IL)

2008-12-23

210

A Software Engineering Ontology as Software Engineering Knowledge Representation  

Microsoft Academic Search

This paper aims to present software engineering ontology as software engineering knowledge representation for a multi-site software development. It will not only facilitate the capturing of software engineering knowledge but also enhance the sharing of software engineering knowledge across geographically multiple software development sites. The software engineering ontology assists in defining information for the exchange of semantic project data and

P. Wongthongtham; N. Kasisopha; E. Chang; T. Dillon

2008-01-01

211

Engineering Complex Tissues  

PubMed Central

This article summarizes the views expressed at the third session of the workshop “Tissue Engineering—The Next Generation,” which was devoted to the engineering of complex tissue structures. Antonios Mikos described the engineering of complex oral and craniofacial tissues as a “guided interplay” between biomaterial scaffolds, growth factors, and local cell populations toward the restoration of the original architecture and function of complex tissues. Susan Herring, reviewing osteogenesis and vasculogenesis, explained that the vascular arrangement precedes and dictates the architecture of the new bone, and proposed that engineering of osseous tissues might benefit from preconstruction of an appropriate vasculature. Jennifer Elisseeff explored the formation of complex tissue structures based on the example of stratified cartilage engineered using stem cells and hydrogels. Helen Lu discussed engineering of tissue interfaces, a problem critical for biological fixation of tendons and ligaments, and the development of a new generation of fixation devices. Rita Kandel discussed the challenges related to the re-creation of the cartilage-bone interface, in the context of tissue engineered joint repair. Frederick Schoen emphasized, in the context of heart valve engineering, the need for including the requirements derived from “adult biology” of tissue remodeling and establishing reliable early predictors of success or failure of tissue engineered implants. Mehmet Toner presented a review of biopreservation techniques and stressed that a new breakthrough in this field may be necessary to meet all the needs of tissue engineering. David Mooney described systems providing temporal and spatial regulation of growth factor availability, which may find utility in virtually all tissue engineering and regeneration applications, including directed in vitro and in vivo vascularization of tissues. Anthony Atala offered a clinician’s perspective for functional tissue regeneration, and discussed new biomaterials that can be used to develop new regenerative technologies.

MIKOS, ANTONIOS G.; HERRING, SUSAN W.; OCHAREON, PANNEE; ELISSEEFF, JENNIFER; LU, HELEN H.; KANDEL, RITA; SCHOEN, FREDERICK J.; TONER, MEHMET; MOONEY, DAVID; ATALA, ANTHONY; VAN DYKE, MARK E.; KAPLAN, DAVID; VUNJAK-NOVAKOVIC, GORDANA

2010-01-01

212

Integrating Multidisciplinary Engineering Knowledge  

ERIC Educational Resources Information Center

In order to design two distinct engineering qualification levels for an existing University of Technology programme, empirical evidence based on the current diploma is necessary to illuminate the nature of and the relationship between the "contextual" and "conceptual" elements underpinning a multidisciplinary engineering

Wolff, Karin; Luckett, Kathy

2013-01-01

213

SCSE organic Rankine engine  

SciTech Connect

The Organic Rankine Cycle (ORC) engine is described which has been developed by FACC for the Small Community Solar Thermal Power Experiment (SCSE). This engine is part of a Power Conversion Subsystem (PCS) located at the focal plant of a sun-tracking parabolic dish concentrator.

Boda, F.P.

1981-01-01

214

Ringless piston engine  

Microsoft Academic Search

An internal combustion engine without conventional means for transferring heat to the surrounding atmosphere is described comprising: a. means for introducing a fuel and air mixture into a cylinder of the engine; b. a non-lubricated, ringless piston connected to a first end of a piston rod and dispositioned to reciprocate within the cylinder, c. means for translating reciprocating motion of

Wood

1988-01-01

215

Engine balancing system  

Microsoft Academic Search

This patent describes a single-cylinder engine comprising a crank shaft, a crank web connected to the crank shaft, a connecting rod connected to the crank web through a crank pin, a cylinder, and a piston connected to the connecting rod to move in reciprocatory movement within the cylinder. An engine balancing system is described comprising: a counter balancer supported by

T. Fujikawa; M. Hirata; S. Tamba; A. Miguchi

1986-01-01

216

Vehicle with magnetic engine  

Microsoft Academic Search

A vehicle is described comprising a vehicle frame fitted with axles and wheels rotatably carried by the axles; an engine block mounted on the frame; a plurality of magnetic cylinders provided in the engine block and a plurality of magnetic pistons disposed in the magnetic cylinders, respectively, in reciprocating relationship, the magnetic cylinders having a first magnetic polarity in one

Wortham

1993-01-01

217

Simulating Critical Software Engineering  

Microsoft Academic Search

One goal of many introductory software engineering courses is to simulate realistic software engineering. Unfortunately, many of the practical constraints of typical courses are antithetical to that goal: instead of working in large teams on large projects, dealing with changing requirements and maintaining programs over many years, courses generally involve students working alone or in small teams with short projects

David Evans; Michael Peck

2004-01-01

218

Thermoacoustic engines and refrigerators  

NASA Astrophysics Data System (ADS)

Thermoacoustic engines and refrigerators use gas inertia and compressibility to eliminate many of the mechanical contrivances required by traditional engines and refrigerators while providing potentially attractive options that might reduce environmental impacts. The operation of both standing-wave and traveling-wave devices will be described and illustrated with thermoacoustic devices that have been used outside the laboratory.

Garrett, Steven L.

2012-06-01

219

Software engineering economics  

Microsoft Academic Search

This paper summarizes the current state of the art and recent trends in software engineering economics. It provides an overview of economic analysis techniques and their applicability to software engineering and management. It surveys the field of software cost estimation, including the major estimation techniques available, the state of the art in algorithmic cost models, and the outstanding research issues

Barry W. Boehm

1984-01-01

220

An electrochemical engine  

NASA Technical Reports Server (NTRS)

Thin-electrode fuel cell, with electrodes arranged in circular shape, can provide power for new electrochemical engine. With this system, a safe high-voltage engine may be constructed. Since each electrode assumes a potential relative to electrolyte, and since there are no electrolyte paths between cells, any number of cell stacks can be connected in series.

Asher, W. J.

1974-01-01

221

Computers in Engineering Teaching.  

ERIC Educational Resources Information Center

This bibliography cites 26 books, papers, and reports dealing with various uses of computers in engineering education; and describes several computer programs available for use in teaching aeronautical, chemical, civil, electrical and electronic, mechanical, and nuclear engineering. Each computer program entry is presented by name, author,…

Rushby, N. J.

222

Engineering Technology Curriculum Guidelines  

ERIC Educational Resources Information Center

Summarizes curriculum guidelines for the following engineering technologies: chemical, industrial, mining, petroleum, nuclear, civil, mechanical, electrical, automotive, and manufacturing. In a few years, these Engineering Council for Professional Development committee guidelines are intended to become the criteria by which programs will be judged…

Gershon, J. J.

1977-01-01

223

Artificial intelligence in engineering  

SciTech Connect

This book presents the papers given at a conference which considered supercomputers, artificial intelligence, and expert systems. Topics covered at the conference included artificial intelligence in manufacturing and operations, expert system packages and tools, military applications, artificial intelligence in engineering design and development, decision support systems, engineering testing, decision support systems, expert management systems, and expert database systems.

Not Available

1985-01-01

224

Engineering performance metrics  

Microsoft Academic Search

Implementation of a Total Quality Management (TQM) approach to engineering work required the development of a system of metrics which would serve as a meaningful management tool for evaluating effectiveness in accomplishing project objectives and in achieving improved customer satisfaction. A team effort was chartered with the goal of developing a system of engineering performance metrics which would measure customer

R. Delozier; N. Snyder

1993-01-01

225

Nitinol engine development  

Microsoft Academic Search

The objective of this project is to determine the feasibility of applying the shape-memory effect in certain intermetallic compounds (particularly ''55 Nitinol'') to the conversion of low temperature heat energy to mechanical work by means of solid state heat engines. A primary milestone is the development of a prototype Nitinol engine on a scale suitable for powering a moderate-size residential

M. Wahlig; R. Banks; R. Kopa; H. Mohamed

1978-01-01

226

Linear output nitinol engine  

Microsoft Academic Search

This patent describes a linear output nitinol engine consisting of a number of integrated communicating parts. The engine has an external support framework which is described in detail. The patent further describes a wire transport mechanism, a pair of linkage levers with a loom secured to them, a number of nitinol wires strung between the looms, and a power takeoff

1986-01-01

227

Engineers: Going Global  

ERIC Educational Resources Information Center

This article demonstrates the need for engineering courses in UK higher education to give a higher priority to global and sustainability issues. In support of this case, the author summarizes and assesses evidence from a recently-concluded study by the Institute of Education, University of London, and Engineers Against Poverty, a specialist…

Feest, Tim

2008-01-01

228

COBRA Main Engine Project.  

National Technical Information Service (NTIS)

The COBRA (CO-Optimized Booster for Reusable Applications) project include the following: 1. COBRA main engine project team. 2. COBRA and RLX cycles selected. 3. COBRA proto-type engine approach enables mission success. 4. COBRA provides quick, low cost d...

J. Snoddy S. Sides

2002-01-01

229

Concurrent Software Engineering Project  

ERIC Educational Resources Information Center

Concurrent engineering or overlapping activities is a business strategy for schedule compression on large development projects. Design parameters and tasks from every aspect of a product's development process and their interdependencies are overlapped and worked on in parallel. Concurrent engineering suffers from negative effects such as excessive…

Stankovic, Nenad; Tillo, Tammam

2009-01-01

230

NASA Engineering Network (NEN)  

NASA Technical Reports Server (NTRS)

This slide presentation reviews the NASA Engineering Network (NEN). NEN is designed to search documents over multiple repositories, submit and browse NASA Lessons Learned, collaborate and share ideas with other engineers via communities of practice, access resources from one portal, and find subject matter experts via the People, Organizations, Projects, Skills (POPS) locator.

Topousis, Daria; Trevarthen, Ellie; Yew, Manson

2008-01-01

231

Image Semantic Search Engine  

Microsoft Academic Search

As the search technology rapidly developed, nowadays, main search engines are already able to meet users basic search desire. However, current search algorithms or methodologies mostly depend on keywords matching process, which could be effective for text search while not efficient for keywords-lacking or non-text search scenarios. This paper summarizes the solution adopted by current search engine vendors, and introduces

Lv Chaoqing; Takashi Kobayashi; Kiyoshi Agusa; Kun Wu; Qing Zhu

2009-01-01

232

Elliptic Curve Cryptography Engineering  

Microsoft Academic Search

In recent years, elliptic curve cryptography (ECC) has gained widespread exposure and acceptance, and has already been included in many security standards. Engineering of ECC is a complex, interdisciplinary research field encompassing such fields as mathematics, computer science, and electrical engineering. In this paper, we survey ECC implementation issues as a prominent case study for the relatively new discipline of

ALESSANDRO CILARDO; LUIGI COPPOLINO; NICOLA MAZZOCCA; LUIGI ROMANO

2006-01-01

233

Linear Aerospike Engine Study.  

National Technical Information Service (NTIS)

Parametric data on split-combustor linear engine propulsion systems are presented for use in mixed-mode single-stage-to-orbit (SSTO) vehicle studies. Preliminary design data for two selected engine systems are included. The split combustor was investigate...

H. G. Diem F. M. Kirby

1977-01-01

234

Everyday Engineering: Holiday blinkers  

NSDL National Science Digital Library

Many examples of engineering go unnoticed because they are so much a part of our daily lives that we rarely give them much thought. When you decorate your house with holiday lights, you probably do not think about the engineering that was needed to produc

Moyer, Richard; Everett, Susan

2009-12-01

235

Reciprocating piston engine  

Microsoft Academic Search

This patent describes a reciprocating combustion engine consisting of a cylinder, a piston reciprocating in the cylinder, a top for closing one end of the cylinder, inlets and outlets extending to and from the cylinder for the intake of combustible gas and the expelling of burned exhaust gases. The engine also consists of a device for ignition of the combustible

Eickmann

1986-01-01

236

Advanced Engine Study Program.  

National Technical Information Service (NTIS)

A design and analysis study was conducted to provide advanced engine descriptions and parametric data for space transfer vehicles. The study was based on an advanced oxygen/hydrogen engine in the 7,500 to 50,000 lbf thrust range. Emphasis was placed on de...

A. I. Masters D. E. Galler T. F. Denman R. A. Shied J. R. Black

1993-01-01

237

Diesel Engine Mechanics.  

ERIC Educational Resources Information Center

Written in student performance terms, this curriculum guide on diesel engine repair is divided into the following eight sections: an orientation to the occupational field and instructional program; instruction in operating principles; instruction in engine components; instruction in auxiliary systems; instruction in fuel systems; instruction in…

Foutes, William A.

238

Educating the Future Engineer  

ERIC Educational Resources Information Center

Describes a new course in engineering science for pre-university students in England and Wales. The course outline, laboratory work, and evaluation procedures are discussed. The new course has been accepted by British universities as an entry qualification for degree courses in engineering and physics. (LC)

Sayer, Michael

1970-01-01

239

Biochemical engineering and industry  

Microsoft Academic Search

The use of biochemical engineering in an industrial setting is presented by examples from the author's own field of expertise: process development for industrial enzymes. Examples given cover the fields bioreactor performance, measurement and control on fermentation, downstream operations and development and optimization of production strains. The use of engineering principles is placed in the industrial context of a high

Anders Gram

1997-01-01

240

Genetic engineering in biotechnology  

Microsoft Academic Search

The objective of this book is to encourage the use of genetic engineering for economic development. The report covers: (1) Precedents of genetic engineering; (2) a brief description of the technology, including the transfer of DNA in bacteria (vectors, E. coli and B. subtilis hosts, stages, and technical problems), practical examples of techniques used and their products (interferon; growth hormone;

C. A. Bedate; J. C. Morales; E. H. Lopez

1981-01-01

241

Szilard's heat engine  

NASA Astrophysics Data System (ADS)

Szilard presented the first concrete embodyment of a Maxwell demon. We present a detailed kinematic analysis of his heat engine. We find that the phase space contains a branched manifold. After defining carefully the physical dynamics on such an object, we prove that the engine must operate at a loss.

Magnasco, M. O.

1996-03-01

242

Diversity in Engineering  

NSDL National Science Digital Library

This article is a revised version of a talk the author gave 4 October during the 1998 National Academy of Engineering (NAE) Annual Meeting discussing diversity issues in engineering, in terms of both underrepresented populations and 'individual diversity.' Target Audience: 2-4 Year College Faculty/Administrators

Wulf, William A.

2010-02-04

243

A Robotics Engineering Major  

Microsoft Academic Search

Robotics is experiencing rapid growth, driven by both supply of inexpensive components and demand for auto- mated and autonomous devices, yet no single discipline provides the breadth demanded by robotics in the future. To meet this need, Worcester Polytechnic Institute has instituted a Robotics Engineering degree program to educate future robotics engineers and prepare students for graduate work in robotics.

Michael J. Ciaraldi; David Cyganski; Michael A. Demetriou; Michael A. Gennert; Brad A. Miller; Yiming Rong; Lance E. Schachterle; Kenneth A. Stafford

244

JET ENGINE CERTIFICATION STANDARDS  

Microsoft Academic Search

The ability of modern jet engines to ingest birds and continue to operate is largely misunderstood or not contemplated at all in the aviation industry. Currently, there is not one jet engine operating in the world that is certified to ingest one large bird (goose, swan, stork, pelican, vulture, etc) and continue to operate. The effort to harmonize bird ingestion

Paul Eschenfelder

2000-01-01

245

Family Style Engineering  

ERIC Educational Resources Information Center

Cunningham and Lachapelle (2011) found that most students have a naive understanding of the field of engineering, mistaking it for the work of technicians or artisans and neglecting to see the contributions engineers make to people's daily lives. In general, public (and teacher) understanding is not much more refined. These misconceptions about…

Smetana, Lara K.; Schumaker, Joan Chadde; Goldfien, Wendy Severin; Nelson, Cheryl

2012-01-01

246

Diesel engine exhaust oxidizer  

SciTech Connect

This patent describes a diesel engine exhaust oxidizing device. It comprises: an enclosure having an inlet for receiving diesel engine exhaust, a main flow path through the enclosure to an outlet of the enclosure, a by-ass through the enclosure, and a microprocessor control means.

Kammel, R.A.

1992-06-16

247

Stirling engine design manual  

NASA Technical Reports Server (NTRS)

This manual is intended to serve both as an introduction to Stirling engine analysis methods and as a key to the open literature on Stirling engines. Over 800 references are listed and these are cross referenced by date of publication, author and subject. Engine analysis is treated starting from elementary principles and working through cycles analysis. Analysis methodologies are classified as first, second or third order depending upon degree of complexity and probable application; first order for preliminary engine studies, second order for performance prediction and engine optimization, and third order for detailed hardware evaluation and engine research. A few comparisons between theory and experiment are made. A second order design procedure is documented step by step with calculation sheets and a worked out example to follow. Current high power engines are briefly described and a directory of companies and individuals who are active in Stirling engine development is included. Much remains to be done. Some of the more complicated and potentially very useful design procedures are now only referred to. Future support will enable a more thorough job of comparing all available design procedures against experimental data which should soon be available.

Martini, W. R.

1978-01-01

248

The Engineering Technician.  

ERIC Educational Resources Information Center

Occupational and educational information concerning 12 categories of engineering technicians and engineering technology is presented. This information covers the role of the technicians, student qualifications, typical job titles, and typical educational programs. The categories presented are (1) air conditioning, heating, and refrigeration, (2)…

American Society for Engineering Education, Washington, DC.

249

Diesel Engine Technician  

ERIC Educational Resources Information Center

Diesel engine technicians maintain and repair the engines that power transportation equipment such as heavy trucks, trains, buses, and locomotives. Some technicians work mainly on farm machines, ships, compressors, and pumps. Others work mostly on construction equipment such as cranes, power shovels, bulldozers, and paving machines. This article…

Tech Directions, 2010

2010-01-01

250

Virage Video Engine  

Microsoft Academic Search

The temporal and multi-modal nature of video increases the dimensionality of content based retrieval problem. This places new demands on the indexing and retrieval tools required. The Virage Video Engine (VVE) with the default set of primitives provide the necessary frame work and basic tools for video content based retrieval. The video engine is a flexible platform independent architecture which

Arun Hampapur; Amarnath Gupta; Bradley Horowitz; Chiao-Fe Shu; Charles Fuller; Jeffrey R. Bach; Monika Gorkani; Ramesh Jain

1997-01-01

251

Biomedical engineering education  

Microsoft Academic Search

Modern medical and research laboratories are equipped with broad spectrum of equipment which need proper maintenance and instrumentation. Therefore, for proper maintenance and servicing of these equipment adequate education in biomedical engineering is an imperative. While joining the International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B), Dhaka, as a biomedical engineer, the author found that a lot of equipment had

S. S. Huq

1995-01-01

252

Engineering Research and Development  

Microsoft Academic Search

The mission of the Engineering Research Program is to develop the people and technology needed to support current and future Laboratory programs. To accomplish this mission Engineering Research has two important goals -- to identify key technology areas important to the Laboratory and to conduct high quality research and development. To help focus our efforts in achieving these goals we

E. Lafranchi; M. Genin; P. Adye; W. Clements; K. Gordon; H. Highstone; M. Kotowski; D. Sceales

1990-01-01

253

Think Engineer, Think Male?  

ERIC Educational Resources Information Center

Engineering education needs to develop the competencies required for engineering work, and attract and retain students from diverse backgrounds. This study investigated the possibility that the perceived importance of competencies is subconsciously influenced by gendered assumptions, and as a consequence, this lowers the status given to…

Male, Sally A.; Bush, Mark B.; Murray, Kevin

2009-01-01

254

Ann Wagner, Mechanical Engineer.  

ERIC Educational Resources Information Center

Presents a profile of Ann Wagner, a mechanical engineer at the Goddard Space Flight Center in Maryland, and her job responsibilities there. Also includes a brief history of mechanical engineering as well as a sample graph and data activity sheet with answers. (AIM)

Bennett, Betsy K.

1996-01-01

255

Fuzzy Control Engineering.  

National Technical Information Service (NTIS)

'Fuzzy' control engineering is an application of fuzzy theory, which was first proposed by L.A. Zadeh at the University of California in 1964, to engineering problems possessing some degree of ambiguity. It can, in fact, be applied to the automation of sy...

1988-01-01

256

Searches Conducted for Engineers.  

ERIC Educational Resources Information Center

This paper reports an industrial information specialist's experience in performing online searches for engineers and surveys the databases used. Engineers seeking assistance fall into three categories: (1) those who recognize the value of online retrieval; (2) referrals by colleagues; and (3) those who do not seek help. As more successful searches…

Lorenz, Patricia

257

Biological handbook for engineers  

NASA Technical Reports Server (NTRS)

Microbiological background information is compiled in handbook for engineers and scientists working on bio-related projects. It is intended as aid in - /1/ evaluating effects of engineering procedures on microbial life, /2/ determining effects of decontamination and sterilization on performance of overall systems, and /3/ understanding language of microbiologists.

1970-01-01

258

Genetic engineering and pharmaceuticals  

Microsoft Academic Search

Genetic engineering now allows biological synthesis and large-scale production of several proteins with therapeutic potential. The principal challenge in this sphere is to identify new, medically and commercially significant targets - the province of cell biologists, physiologists and biochemists. In the future, genetic engineering will surely provide invaluable tools for the study of the molecular basis of cellular control and

John Vane; Pedro Cuatrecasas

1984-01-01

259

Fracture Education in Engineering.  

ERIC Educational Resources Information Center

Fracture mechanics is a multidisciplinary topic which is being introduced to undergraduate engineering students in such courses as materials engineering. At a recent Conference on Fracture held at the University of Waterloo, a session was devoted to fracture education. Some of the ideas presented at that session are included and discussed here.…

Sidey, D.; And Others

260

Science & Engineering Indicators--1987.  

ERIC Educational Resources Information Center

This volume was written to reflect an increased awareness of the complementary roles played by science and engineering research and engineering in creating both new knowledge and new technological products and processes. It was designed to provide a broad base of quantitative information about the structure and function of science and technology…

National Science Foundation, Washington, DC. National Science Board.

261

Engineering Design Concepts  

ERIC Educational Resources Information Center

In the author's opinion, the separation of content between science, math, engineering, and technology education should not exist. Working with the relationship between these content areas enhances students' efforts to learn about the physical world. In teaching students about design, technology, and engineering, attention should be given to the…

Fitzgerald, Mike

2004-01-01

262

Mathematical Education of Engineers.  

ERIC Educational Resources Information Center

The seminar reported in this document examined the university mathematics courses which should be available to future engineers, and was especially concerned with the introduction of computer science education. There are four major sections. The first reports a survey of electrical engineers in the United Kingdom which investigated how often they…

Organisation for Economic Cooperation and Development, Paris (France).

263

We Need Educational Engineers.  

ERIC Educational Resources Information Center

The key to the successful problem-solving process is the educational engineer, whose role is to make specific practical applications of knowledge gained by research. An educational engineer program is offered to the schools by a regional service agency in Pennsylvania. (Author/IRT)

Lutz, John E.

1980-01-01

264

System identification of jet engines  

Microsoft Academic Search

System identification plays an important role in advanced control systems for jet engines, in which controls are performed adaptively using data from the actual engine and the identified engine. An identification technique for jet engine using the Constant Gain Extended Kalman Filter (CGEKF) is described. The filter is constructed for a two-spool turbofan engine. The CGEKF filter developed here can

N. Sugiyama

2000-01-01

265

Engineered cardiac tissues  

PubMed Central

Cardiac tissue engineering offers the promise of creating functional tissue replacements for use in the failing heart or for in vitro drug screening. The last decade has seen a great deal of progress in this field with new advances in interdisciplinary areas such as developmental biology, genetic engineering, biomaterials, polymer science, bioreactor engineering, and stem cell biology. We review here a selection of the most recent advances in cardiac tissue engineering, including the classical cell-scaffold approaches, advanced bioreactor designs, cell sheet engineering, whole organ decellularization, stem-cell based approaches, and topographical control of tissue organization and function. We also discuss current challenges in the field, such as maturation of stem cell-derived cardiac patches and vascularization.

Iyer, Rohin K.; Chiu, Loraine L. Y.; Reis, Lewis A.; Radisic, Milica

2011-01-01

266

Metabolic Engineering VII Conference  

SciTech Connect

The aims of this Metabolic Engineering conference are to provide a forum for academic and industrial researchers in the field; to bring together the different scientific disciplines that contribute to the design, analysis and optimization of metabolic pathways; and to explore the role of Metabolic Engineering in the areas of health and sustainability. Presentations, both written and oral, panel discussions, and workshops will focus on both applications and techniques used for pathway engineering. Various applications including bioenergy, industrial chemicals and materials, drug targets, health, agriculture, and nutrition will be discussed. Workshops focused on technology development for mathematical and experimental techniques important for metabolic engineering applications will be held for more in depth discussion. This 2008 meeting will celebrate our conference tradition of high quality and relevance to both industrial and academic participants, with topics ranging from the frontiers of fundamental science to the practical aspects of metabolic engineering.

Kevin Korpics

2012-12-04

267

Mod II engine performance  

NASA Technical Reports Server (NTRS)

The testing of a prototype of an automotive Stirling engine, the Mod II, is discussed. The Mod II is a one-piece cast block with a V-4 single-crankshaft configuration and an annular regenerator/cooler design. The initial testing of Mod II concentrated on the basic engine, with auxiliaries driven by power sources external to the engine. The performance of the engine was tested at 720 C set temperature and 820 C tube temperature. At 720 C, it is observed that the power deficiency is speed dependent and linear, with a weak pressure dependency, and at 820 C, the power deficiency is speed and pressure dependent. The effects of buoyancy and nozzle spray pattern on the heater temperature spread are investigated. The characterization of the oil pump and the operating cycle and temperature spread tests are proposed for further evaluation of the engine.

Richey, Albert E.; Huang, Shyan-Cherng

1987-01-01

268

Tissue engineering of bone.  

PubMed

Despite well-established bone-grafting techniques, large bone defects still represent a challenge for orthopaedic and reconstructive surgeons. Efforts have therefore been made to develop osteoconductive, osteoinductive and osteogenic bone-replacement systems. According to its original definition, tissue engineering is an 'interdisciplinary field that applies the principles of engineering and the life sciences toward the development of biological substitutes that restore, maintain, or improve tissue function'. It is based on the understanding of tissue formation and regeneration, and aims to grow new functional tissues rather than to build new spare parts. This review focuses on the principles of tissue engineering applied to the creation of bioartificial bone tissue. Important aspects, such as osteogenic cells, matrix materials, inter- and intra-cellular communication, growth factors, gene therapy and current concepts of bone tissue engineering are reviewed. First clinical applications are discussed. An outlook provides insight into the possible future perspectives of bone tissue engineering. PMID:16754059

2002-05-01

269

TU Delft: Hydraulic Engineering  

NSDL National Science Digital Library

Given the Dutch reputation for water management, it's no surprise that one of their leading technical institutes, The Technische Universiteit Delft, offers a program in Hydraulic Engineering. The website, in both Dutch and English, describes their program as an attempt "to bridge the gap between basic sciences (fluid mechanics and soil mechanics in particular) and practical engineering applications in the design, construction, maintenance, management and eventually the demolition of hydraulic structures." The Education section of the website posts MSc theses completed by their students. The research section describes current and recently completed research projects and includes a listing of publications, some of which are available to download. The website also has a link to a Hydraulic Engineering portal, which offers various publication databases (some in Dutch only), and the Civil Engineering Knowledge Centre, which provides library access and discussion forums for students and staff of Civil Engineering.

270

Elements of Engineering Excellence  

NASA Technical Reports Server (NTRS)

The inspiration for this Contract Report (CR) originated in discussions with the director of Marshall Space Flight Center (MSFC) Engineering who asked that we investigate the question: "How do you achieve excellence in aerospace engineering?" Engineering a space system is a complex activity. Avoiding its inherent potential pitfalls and achieving a successful product is a challenge. This CR presents one approach to answering the question of how to achieve Engineering Excellence. We first investigated the root causes of NASA major failures as a basis for developing a proposed answer to the question of Excellence. The following discussions integrate a triad of Technical Understanding and Execution, Partnership with the Project, and Individual and Organizational Culture. The thesis is that you must focus on the whole process and its underlying culture, not just on the technical aspects. In addition to the engineering process, emphasis is given to the need and characteristics of a Learning Organization as a mechanism for changing the culture.

Blair, J. C.; Ryan, R. S.; Schutzenhofer

2012-01-01

271

Engineering is Elementary  

NSDL National Science Digital Library

Boston Museum of Science's Engineering is Elementary (EIE) has created this remarkable set of resources designed for young children with an interest in engineering and technological literacy. The focus of this work is to reach young people who are underserved or underrepresented in STEM fields while also improving educators' ability to teach engineering and technology. On this site, visitors can look over sections that include Educator Resources, The EIE Curriculum, and About Us. Within Educator Resources visitors will find dozens of videos, such as "Inclined Plane Station," "Solar Oven Box," and "Designing Model Membranes." Moving on, the Engineering Adventures subset of EiE Curriculum features a range of free modules designed for after-school progress. The modules here include "Engineering Aid Drop Packages" and "Safe Removal of an Invasive Species." There is also a place where visitors can sign up to receive the EiE newsletter, a delightful source full of updates, tips, and more.

272

Engineering Field Manual. Chapter 4. Elementary Soil Engineering.  

National Technical Information Service (NTIS)

This chapter is about soil engineering. It includes the following major sections: (1) an explanation of basic soil concepts that relate to engineering; (2) an engineering classification and description system for soil; and (3) guides for estimating soil s...

1990-01-01

273

The Role of Industrial Engineering within Base Civil Engineering.  

National Technical Information Service (NTIS)

The purpose of the thesis was to determine what role industrial engineering should play within Base Civil Engineering. During the past three years, there has been considerable concern expressed about the effectiveness of Base Civil Engineering's Industria...

M. J. Farineau A. E. Tucker

1977-01-01

274

Engine starter protecting device  

SciTech Connect

This patent describes an engine starter protecting device for an engine starter of a type comprising a starter motor for turning an engine, an electromagnetic switch for controlling the starter motor, a key switch for controlling the electromagnetic switch, and a battery for electrically energizing the starter motor and the electromagnetic switch. The device comprises a first switch operatively associated with the engine, which is closed when the engine is disengaged from wheels and otherwise opened, and second switch means operatively associated with the engine, which is opened when a speed of rotation of the engine is at or above an predetermined value and otherwise closed. The first switch and second switch means are connected in series with one another and coupled between the battery and the electromagnetic switch for controlling actuation of the electromagnetic switch; wherein the second switch means comprises at least two detectors selected from a group consisting of an ignition detector which operates when the frequency of engine ignition pulses is at a predetermined value or higher, an oil pressure detector which operates when an engine lubrication oil pressure is at a predetermined value or higher, a vacuum pressure detector which operates when a pressure of intake air to the engine is at a predetermined value or lower, and a charging detector which operates when an output voltage of an alternator is at a predetermined value or higher. Relay coils are individually coupled to outputs of the detectors, each of the coils being energized when its associated detector operates, and normally closed relay switches are connected in series and individually associated with an opened by the relay coils when energized.

Yabunaka, K.; Hamano, I.; Morishita, A.; Akae, Y.; Nishimura, Y.; Tanaka, T.

1986-11-18

275

Adaptive Systems Engineering: A Medical Paradigm for Practicing Systems Engineering  

SciTech Connect

From its inception in the defense and aerospace industries, SE has applied holistic, interdisciplinary tools and work-process to improve the design and management of 'large, complex engineering projects.' The traditional scope of engineering in general embraces the design, development, production, and operation of physical systems, and SE, as originally conceived, falls within that scope. While this 'traditional' view has expanded over the years to embrace wider, more holistic applications, much of the literature and training currently available is still directed almost entirely at addressing the large, complex, NASA and defense-sized systems wherein the 'ideal' practice of SE provides the cradle-to-grave foundation for system development and deployment. Under such scenarios, systems engineers are viewed as an integral part of the system and project life-cycle from conception to decommissioning. In far less 'ideal' applications, SE principles are equally applicable to a growing number of complex systems and projects that need to be 'rescued' from overwhelming challenges that threaten imminent failure. The medical profession provides a unique analogy for this latter concept and offers a useful paradigm for tailoring our 'practice' of SE to address the unexpected dynamics of applying SE in the real world. In short, we can be much more effective as systems engineers as we change some of the paradigms under which we teach and 'practice' SE.

R. Douglas Hamelin; Ron D. Klingler; Christopher Dieckmann

2011-06-01

276

The Cassini Main Engine Assembly Cover Mechanism  

NASA Technical Reports Server (NTRS)

This paper describes a micrometeroid protection system for the main engines of the Cassini spacecraft. The engine Cover Assembly is a deployable/restowable half sphere of multilayer insulation mounted to an articulatable frame over 2 meters (7 feet) in diameter. The Cover folds into a compact wedge only 25 cm (10 inches) at its maximum thickness. The micrometeroid environment and typical protection methods are described as well as the design details and development problems of the Cover Mechanism Assembly.

Sevilla, Donald R.

1997-01-01

277

77 FR 34073 - Value Engineering  

Federal Register 2010, 2011, 2012, 2013

...of Federal Procurement Policy Value Engineering AGENCY: Office of Federal Procurement...Budget Circular No. A-131, ``Value Engineering...revise OMB Circular A- 131, Value Engineering, to update and reinforce policies...

2012-06-08

278

78 FR 78399 - Value Engineering  

Federal Register 2010, 2011, 2012, 2013

...of Federal Procurement Policy Value Engineering AGENCY: Office of Federal Procurement...Budget Circular No. A-131, ``Value Engineering...revisions to OMB Circular A-131, Value Engineering, to update and reinforce policies...

2013-12-26

279

Science and Engineering Indicators--1996  

NSF Publications Database

... 1996U.S. Science and Engineering in a Changing WorldTo accompany Science and Engineering Indicators- ... U.S. Science and Engineering in a Changing WorldThis document was last modified on September 19 ...

280

Science and Engineering Indicators: 1996  

NSF Publications Database

... 1996U.S. Science and Engineering in a Changing WorldTo accompany Science and Engineering Indicators- ... U.S. Science and Engineering in a Changing WorldThis document was last modified on September 19 ...

281

Mars Science Laboratory Engineering Cameras  

NASA Technical Reports Server (NTRS)

NASA's Mars Science Laboratory (MSL) Rover, which launched to Mars in 2011, is equipped with a set of 12 engineering cameras. These cameras are build-to-print copies of the Mars Exploration Rover (MER) cameras, which were sent to Mars in 2003. The engineering cameras weigh less than 300 grams each and use less than 3 W of power. Images returned from the engineering cameras are used to navigate the rover on the Martian surface, deploy the rover robotic arm, and ingest samples into the rover sample processing system. The navigation cameras (Navcams) are mounted to a pan/tilt mast and have a 45-degree square field of view (FOV) with a pixel scale of 0.82 mrad/pixel. The hazard avoidance cameras (Haz - cams) are body-mounted to the rover chassis in the front and rear of the vehicle and have a 124-degree square FOV with a pixel scale of 2.1 mrad/pixel. All of the cameras utilize a frame-transfer CCD (charge-coupled device) with a 1024x1024 imaging region and red/near IR bandpass filters centered at 650 nm. The MSL engineering cameras are grouped into two sets of six: one set of cameras is connected to rover computer A and the other set is connected to rover computer B. The MSL rover carries 8 Hazcams and 4 Navcams.

Maki, Justin N.; Thiessen, David L.; Pourangi, Ali M.; Kobzeff, Peter A.; Lee, Steven W.; Dingizian, Arsham; Schwochert, Mark A.

2012-01-01

282

Ethyl alcohol use in engines  

SciTech Connect

This article evaluates the use of ethanol as a fuel for internal combustion engines. The basic properties of ethanol are examined together with how it performs in an engine. Both spark ignition engines and diesel engines were tested with ethanol. The physical and chemical characteristics of ethanol provided a better match with the gasoline engines, although ethanol could be used to supplement diesel fuel in diesel engines.

Hofman, V.; Hauck, D.

1980-11-01

283

Principles of models based engineering  

SciTech Connect

This report describes a Models Based Engineering (MBE) philosophy and implementation strategy that has been developed at Los Alamos National Laboratory`s Center for Advanced Engineering Technology. A major theme in this discussion is that models based engineering is an information management technology enabling the development of information driven engineering. Unlike other information management technologies, models based engineering encompasses the breadth of engineering information, from design intent through product definition to consumer application.

Dolin, R.M.; Hefele, J.

1996-11-01

284

Automotive Stirling Engine Development Program  

NASA Technical Reports Server (NTRS)

Mod I engine testing and test results, the test of a Mod I engine in the United States, Mod I engine characterization and analysis, Mod I Transient Test Bed fuel economy, Mod I-A engine performance are discussed. Stirling engine reference engine manufacturing and reduced size studies, components and subsystems, and the study and test of low-cost casting alloys are also covered. The overall program philosophy is outlined, and data and results are presented.

Nightingale, N.; Ernst, W.; Richey, A.; Simetkosky, M.; Smith, G.; Antonelli, M. (editor)

1983-01-01

285

Heavy Truck Engine Program  

SciTech Connect

The Heavy Duty Truck Engine Program at Cummins embodied three significant development phases. All phases of work strove to demonstrate a high level of diesel engine efficiency in the face of increasingly stringent emission requirements. Concurrently, aftertreatment system development and refinement was pursued in support of these efficiency demonstrations. The program's first phase focused on the demonstration in-vehicle of a high level of heavy duty diesel engine efficiency (45% Brake Thermal Efficiency) at a typical cruise condition while achieving composite emissions results which met the 2004 U.S. EPA legislated standards. With a combination of engine combustion calibration tuning and the development and application of Urea-based SCR and particulate aftertreatment, these demonstrations were successfully performed by Q4 of 2002. The second phase of the program directed efforts towards an in-vehicle demonstration of an engine system capable of meeting 2007 U.S. EPA legislated emissions requirements while achieving 45% Brake Thermal Efficiency at cruise conditions. Through further combustion optimization, the refinement of Cummins Cooled EGR architecture, the application of a high pressure common rail fuel system and the incorporation of optimized engine parasitics, Cummins Inc. successfully demonstrated these deliverables in Q2 of 2004. The program's final phase set a stretch goal of demonstrating 50% Brake Thermal Efficiency from a heavy duty diesel engine system capable of meeting 2010 U.S. EPA legislated emissions requirements. Cummins chose to pursue this goal through further combustion development and refinement of the Cooled EGR system architecture and also applied a Rankine cycle Waste Heat Recovery technique to convert otherwise wasted thermal energy to useful power. The engine and heat recovery system was demonstrated to achieve 50% Brake Thermal Efficiency while operating at a torque peak condition in second quarter, 2006. The 50% efficient engine system was capable of meeting 2010 emissions requirements through the application of NOx and particulate matter reduction techniques proven earlier in the program.

Nelson, Christopher

2009-01-08

286

Engineers Love Pizza, Too!  

NSDL National Science Digital Library

In this service-learning engineering project, students follow the steps of the engineering design process to design an assistive eating device for a client. More specifically, they design a prototype device to help a young girl who has a medical condition that restricts the motion of her joints. Her wish is to eat her favorite food, pizza, without getting her nose wet. Students learn about arthrogryposis and how it affects the human body as they act as engineers to find a solution to this open-ended design challenge and build a working prototype. This project works even better if you arrange for a client in your own community.

Integrated Teaching And Learning Program

287

Aircraft engines. II  

SciTech Connect

An account is given of the design features and prospective performance gains of ultrahigh bypass subsonic propulsion configurations and various candidate supersonic commercial aircraft powerplants. The supersonic types, whose enhanced thermodynamic cycle efficiency is considered critical to the economic viability of a second-generation SST, are the variable-cycle engine, the variable stream control engine, the turbine-bypass engine, and the supersonic-throughflow fan. Also noted is the turboramjet concept, which will be applicable to hypersonic aircraft whose airframe structure materials can withstand the severe aerothermodynamic conditions of this flight regime.

Smith, M.G. Jr.

1988-01-01

288

Drafting and Graphics Engineering  

NSDL National Science Digital Library

This video segment, adapted from ATETV, explores Engineering Technology by providing an overview of what skills students will need to learn in order to succeed after graduation. This specific video takes a look at an adult non-traditional student returning to school, and how the community college she attends works with her to accommodate her busy life. This segment showcases the diversity of this particular engineering technology program, drafting and graphics engineering, and career options available to students after completion. Educators will also find a background essay, discussion questions, and standards alignment for the material. Running time for the video is 2:44.

2010-10-08

289

Improving Search Engine Reliability  

NASA Astrophysics Data System (ADS)

Search engines on the Internet are used daily to access and find information. While these services are providing an easy way to find information globally, they are also suffering from artificially created false results. This paper describes two techniques that are being used to manipulate the search engines: spam pages (used to achieve higher rankings on the result page) and cloaking (used to feed falsified data into search engines). This paper also describes two proposed methods to fight this kind of misuse, algorithms for both of the formerly mentioned cases of spamdexing.

Pruthi, Jyoti; Kumar, Ela

2010-11-01

290

Sustainable Natural Resource Engineering  

NSDL National Science Digital Library

Natural Resources figure centrally in the understanding of Sustainability and the Professional responsibility of engineers. A teaching approach is outlined that a) utilizes standard Engineering preparation in applied mathematics; b) applies it as a unifying theme across the natural resource field; c) embeds basic undergraduate exposure to ecological and economic concepts; and d) operates via desktop simulation tools accessible to all university students. The approach suggested is related to the new American Society of Civil Engineers (ASCE) Body of Knowledge (BOK2) requirement of Sustainability.

Lynch, Daniel

2009-09-08

291

Engineering Faster Bikes  

NSDL National Science Digital Library

This is a video about Niko Henderson, an engineer for Easton Sports. He uses science, mathematics, engineering and innovative testing to help produce some of the fastest bikes on the road. Treat your students to a rare glimpse inside the research and development test laboratory at Easton Sports. Running time 4:45 minutes. Engineering Faster Bikes deals with the following: Frame Stress Subject: Mathematics Topics: Algebra Grades: 8 - 9 Concepts:- Function- Independent variable- Dependent variable- Linear Function- Slope- Extrapolation- Domain Knowledge and Skills:- Can find the slope of a linear function- Can solve equations of the form ax = b. A free 14 day trial is available for the site.

2011-03-23

292

Science and Engineering Indicators: 1993  

NSF Publications Database

Science & Science & Engineering Indicators '93 provides a comprehensive overview of the science ... The hypertext version of the Science & Engineering Indicators '93 was developed under contract to ...

293

Stennis certifies final shuttle engine  

NASA Technical Reports Server (NTRS)

Steam blasts out of the A-2 Test Stand at Stennis Space Center on Oct. 22 as engineers begin a certification test on engine 2061, the last space shuttle main flight engine scheduled to be built. Since 1975, Stennis has tested every space shuttle main engine used in the program - about 50 engines in all. Those engines have powered more than 120 shuttle missions - and no mission has failed as a result of engine malfunction. For the remainder of 2008 and throughout 2009, Stennis will continue testing of various space shuttle main engine components.

2008-01-01

294

Science & Engineering Doctorate Awards: 2000  

NSF Publications Database

... 2000 Detailed Statistical Tables Hypertext Format Science and Engineering Doctorate Awards: 2000 ... pdf) Science and Engineering Doctorate Awards: 2000 This report is available in hypertext (.htm ...

295

Opportunities and Challenges for Manufacturing Engineering  

NSDL National Science Digital Library

During the decades of the 1980s and 1990s, the development of undergraduate and graduate manufacturing engineering programs advanced and legitimized the manufacturing engineering discipline. With recent perceived loss of manufacturing production to oversees locations and the continued public perception of manufacturing being a dirty and non-technical career, all manufacturing related education programs have experienced difficulty in recruiting students to their programs. Additionally, manufacturing's increasingly technical methods, required innovativeness, and the emergence of advanced manufacturing technologies have necessitated continuous improvement of manufacturing engineering programs. Succumbing to these pressures, some undergraduate manufacturing engineering programs have even begun to close, despite the high demand for the graduates of these programs. This paper will examine strategies that the University of Wisconsin-Stout has deployed to keep its manufacturing engineering program one of the largest and most vibrant in the face of these challenges.

Bee, Danny; Meyer, Bob

2012-03-07

296

Engineering Communication: Drawing Terminology  

NSDL National Science Digital Library

How do engineers display their ideas? This is the question this presentation looks to address. According to the site, the âÂÂlanguage of the industryâ is a skill called drafting. This website, created by Engineering Technology Pathways, addresses the skill and how it is "the representation of an engineerâÂÂs idea on paper." The page contains a helpful worksheet that allows students to better orient themselves with terminology of the craft. Another helpful resource is an extensive quiz, providing students a final way to grasp the concept. Overall, this is a good resource to help students understand many of the different skills used in the field of engineering.

Heitkamp, Greg

2010-10-07

297

Variable Thrust Rocket Engine.  

National Technical Information Service (NTIS)

The reaction engine includes a throttling assembly for simultaneously varying the propellant and exhaust areas, so that the combustion chamber is constant for all degrees of throttling; which has a simplified propellant injection system for complete contr...

F. R. Hickerson

1964-01-01

298

Powerful New Engine.  

National Technical Information Service (NTIS)

Through Small Business Innovation Research (SBIR) funding from NASA's Glenn Research Center, Moller International created a new coating for rotary engines, which significantly improves the fuel consumption of a vehicle while reducing emissions. The new co...

2001-01-01

299

Mathematics of Nuclear Engineering.  

National Technical Information Service (NTIS)

The mathematics of nuclear engineering is considered with especial reference to the problems of the representation of the transformation of matter at the nuclear level by radioactive decay and neutron transmutation, the problem of the distribution of neut...

J. D. Lewins

1982-01-01

300

Computers in engineering, 1991  

SciTech Connect

This book is covered under the following topics: Robotics, Computers in Fluid Mechanics/Thermal Systems, CAD/CAM/CAE, Finite Element techniques, Computers in Education, Engineering Database Management, and Artificial Intelligence and Expert Systems.

Gupta, G.; Shoup, T.E.

1991-01-01

301

Engineering Drawing System.  

National Technical Information Service (NTIS)

The main purpose of this manual is to present the standard practices and information required in the preparation of engineering drawings. The basic requirements for all drawings and specifications are delineated. Instructions are presented for preparing s...

1978-01-01

302

Uninitiates Introduction to Engineering.  

National Technical Information Service (NTIS)

The UNITE (Uninitiates Introduction to Engineering) program was conducted on four different college campuses during the summers of 1978, 1979, and 1980. To date five hundred minority students (371 male, 229 female) participated in a two-week introduction ...

D. C. O'Bryant R. B. Cowin

1981-01-01

303

Compound Memory Engine.  

National Technical Information Service (NTIS)

The patent application relates to a mechanism for transforming heat energy into mechanical energy capable of using heat from low temperature sources such as solar heated water, geothermal hot water and rejected heat from conventional engines. The mechanis...

W. V. Smith

1975-01-01

304

Network Engineering Assessment Facility.  

National Technical Information Service (NTIS)

We are providing this report for your information and use. The audit was performed in response to your request for assistance in reviewing the operations of the Defense Information Systems Agency (DISA) Network Engineering Assessment Facility (NEAF), a su...

1996-01-01

305

Genetically engineered foods  

MedlinePLUS

... Health, National Research Council. Safety of genetically engineered foods: Approaches to assessing unintended health effects. National Academies Press. 2004. Key S, Ma JK, Drake PM. Genetically modified plants and human health. J R Soc Med. ...

306

Biochemical Engineering / Biotechnology  

NSF Publications Database

... processing research, especially related to the safety of the nation?s food supply, is also an ... engineering proposals that increase the safety or utility of our food supply. Sensors that rapidly ...

307

Turbo compound engine  

SciTech Connect

A turbo compound engine having a first exhaust turbine coupled to an exhaust pipe of an internal combustion engine and a second exhaust turbine coupled to an exhaust port of the first exhaust turbine is described comprising: a first generator drivable by the first exhaust turbine; a second generator drivable by the second exhaust turbine; a motor operatively coupled to an output shaft of the internal combustion engine; speed detecting means for detecting the speed of rotation of the internal combustion engine; and control means for controlling the frequency of electric power, which is the sum of electric power outputs from the first and second generators and supplied to the motor, based on a signal from the speed detecting means, in order to control operation of the motor.

Kawamura, H.

1988-05-24

308

Open Systems (Architecture) Engineering.  

National Technical Information Service (NTIS)

Overview of this document: discussion of key open system concepts and definitions, conformance and compatibility management, open system engineering approach, open system policy, today's transition environment and open system transition process.

N. W. Kowalski

1996-01-01

309

Liquid Air Cycle Engines.  

National Technical Information Service (NTIS)

Given here is a definition of Liquid Air Cycle Engines (LACE) and existing relevant technologies. Heat exchanger design and fabrication techniques, the handling of liquid hydrogen to achieve the greatest heat sink capabilities, and air decontamination to ...

J. Rosevear

1992-01-01

310

Manufacturing Processes and Engineering  

NSDL National Science Digital Library

This website, created by Jonathan S. Colton of the Georgia Institute of Technology, contains class notes for a senior-level course on manufacturing processes and engineering. This site contains assignments, solutions, course requirements, syllabi, quizzes, and manufacturing videos.

Colton, Jonathan S.

2009-12-29

311

Construction Engineering Research Laboratory  

NSDL National Science Digital Library

The Construction Engineering Research Laboratory (CERL) research facility is part of the U.S. Army Engineer Research and Development Center (USAERDC) of the Army Corps of Engineers' research and development organization. CERL "conducts research and development in infrastructure and environmental sustainment." New technologies that the lab develops are used "to help military installations provide and maintain quality training lands and facilities for soldiers and their families." Some applications are also found in the private sector. The research is organized into numerous themes, including the study of enduring buildings, ecosystem management, land use planning, and seismic engineering. The website describes each of the themes and offers a link to its database of publications and products/capabilities. Visitors can also search the database by keyword. Another section of the website describes the portal software used to develop and maintain the website.

312

Engineering aldolases as biocatalysts?  

PubMed Central

Aldolases are seen as an attractive route to the production of biologically important compounds due to their ability to form carbon–carbon bonds. However, for many industrial reactions there are no naturally occurring enzymes, and so many different engineering approaches have been used to address this problem. Engineering methods have been used to alter the stability, substrate specificity and stereospecificity of aldolases to produce excellent enzymes for biocatalytic processes. Recently greater understanding of the aldolase mechanism has allowed many successes with both rational engineering approaches and computational design of aldolases. Rational engineering approaches have produced desired enzymes quickly and efficiently while combination of computational design with laboratory methods has created enzymes with activity approaching that of natural enzymes.

Windle, Claire L; Muller, Marion; Nelson, Adam; Berry, Alan

2014-01-01

313

Combustion engine system  

NASA Technical Reports Server (NTRS)

A flow through catalytic reactor which selectively catalytically decomposes methanol into a soot free hydrogen rich product gas utilizing engine exhaust at temperatures of 200 to 650 C to provide the heat for vaporizing and decomposing the methanol is described. The reactor is combined with either a spark ignited or compression ignited internal combustion engine or a gas turbine to provide a combustion engine system. The system may be fueled entirely by the hydrogen rich gas produced in the methanol decomposition reactor or the system may be operated on mixed fuels for transient power gain and for cold start of the engine system. The reactor includes a decomposition zone formed by a plurality of elongated cylinders which contain a body of vapor permeable, methanol decomposition catalyst preferably a shift catalyst such as copper-zinc.

Houseman, John (inventor); Voecks, Gerald E. (inventor)

1986-01-01

314

Thermodynamics: Engines and demons  

NASA Astrophysics Data System (ADS)

Brownian motion in a feedback-controlled optical trap provides a minimal experimental realization of a Szilárd engine, confirming fluctuation theorems and demonstrating the importance of spontaneous symmetry breaking in small thermodynamic systems.

Dunkel, Jörn

2014-06-01

315

To Teach Chemists Engineering.  

ERIC Educational Resources Information Center

Cites the shortcomings of the traditional educational experiences of chemists. Focuses on their training in engineering and concludes that training is lacking in the areas of mass balances in flow processes, heat balances, reactors, separation processes, and scaleup. (DDR)

Grinbaum, Baruch; Semiat, Raphael

1998-01-01

316

Construction Engineering Definition.  

National Technical Information Service (NTIS)

In the interest of continuing our efforts to improve project estimates in our construction program, a team was set up to (1) review our current history of construction engineering costs, (2) identify significant factors influencing these costs and (3) mak...

1996-01-01

317

Nuclear Engine Clustering Considerations.  

National Technical Information Service (NTIS)

Some considerations involved in the clustering of solid-core nuclear engines are examined parametrically in order to determine their importance and to indicate the effect of system tradeoffs on vehicle performance. These include neutronic coupling effects...

R. W. Langley J. S. Woyski

1965-01-01

318

Advanced Locomotive Heat Engines.  

National Technical Information Service (NTIS)

Continued high cost and potential future limitations on the supply of diesel fuel are leading to reexaminations of the two established options to diesel power: coal-burning steam engines and electrification. Electrification would provide a long-term solut...

J. G. Daley L. W. Kirsch

1982-01-01

319

Chemical Engineering at NASA  

NASA Technical Reports Server (NTRS)

This viewgraph presentation is a review of the career paths for chemicals engineer at NASA (specifically NASA Johnson Space Center.) The author uses his personal experience and history as an example of the possible career options.

Collins, Jacob

2008-01-01

320

Statistical Software Engineering.  

National Technical Information Service (NTIS)

This report spotlights problem areas in software engineering to which the application of modern statistical methodology can be fruitfully applied. It was produced by an expert cross-disciplinary National Research Council panel. The panel deliberated, disc...

J. R. Tucker

1998-01-01

321

Statistical Software Engineering.  

National Technical Information Service (NTIS)

This book identifies challenges and opportunities in the development and implementation of software that contain significant statistical content. While emphasizing the relevance of using rigorous statistical and probabilistic techniques in software engine...

1996-01-01

322

Toward Data Security Engineering.  

National Technical Information Service (NTIS)

Data security engineering is a methodology for designing and implementing cost-effective data protection mechanisms for specified databank systems. Included will be models of protective mechanisms, derivation of measurements of effectiveness, setting up a...

R. Turn

1974-01-01

323

Engineering Capabilities and Partnerships  

NASA Technical Reports Server (NTRS)

This slide presentation reviews the engineering capabilities at Johnson Space Center, The presentation also reviews the partnerships that have resulted in successfully designed and developed projects that involved commercial and educational institutions.

Poulos, Steve

2010-01-01

324

Robust Rocket Engine Concept  

NASA Technical Reports Server (NTRS)

The potential for a revolutionary step in the durability of reusable rocket engines is made possible by the combination of several emerging technologies. The recent creation and analytical demonstration of life extending (or damage mitigating) control technology enables rapid rocket engine transients with minimum fatigue and creep damage. This technology has been further enhanced by the formulation of very simple but conservative continuum damage models. These new ideas when combined with recent advances in multidisciplinary optimization provide the potential for a large (revolutionary) step in reusable rocket engine durability. This concept has been named the robust rocket engine concept (RREC) and is the basic contribution of this paper. The concept also includes consideration of design innovations to minimize critical point damage.

Lorenzo, Carl F.

1995-01-01

325

Pulse Detonation Engine Modeled.  

National Technical Information Service (NTIS)

Pulse Detonation Engine Technology is currently being investigated at Glenn for both airbreathing and rocket propulsion applications. The potential for both mechanical simplicity and high efficiency due to the inherent near-constant-volume combustion proc...

D. E. Paxson

2001-01-01

326

Geo-Engineering  

Microsoft Academic Search

Geoengineering is a potential approach to addressing climate change though planet-scale engineering projects. This film examines some of the proposed plans, their potential risks and benefits, and the lack of governing international law in this area.

Corin Vick

2011-01-01

327

Lifing of Engine Components.  

National Technical Information Service (NTIS)

The successful development of advanced aerospace engines depends greatly on the capabilities of high performance materials and structures. Advanced materials, such as nickel based single crystal alloys, metal foam, advanced copper alloys, and ceramics mat...

2005-01-01

328

NESTA: NASA Engineering Shuttle Telemetry Agent  

NASA Technical Reports Server (NTRS)

The Spaceport Processing Systems Branch at NASA Kennedy Space Center has developed and deployed an agent based tool to monitor the Space Shuttle's ground processing telemetry stream. The application, the NASA Engineering Shuttle Telemetry Agent, increases situational awareness for system and hardware engineers during ground processing of the Shuttle's subsystems. The agent provides autonomous monitoring of the telemetry stream and automatically alerts system engineers when predefined criteria have been met. Efficiency and safety are improved through increased automation. Sandia National Labs' Java Expert System Shell is employed as the rule engine. The shell's predicate logic lends itself well to capturing the heuristics and specifying the engineering rules of this spaceport domain. The declarative paradigm of the rule-based agent yields a highly modular and scalable design spanning multiple subsystems of the Shuttle. Several hundred monitoring rules have been written thus far with corresponding notifications sent to Shuttle engineers. This paper discusses the rule-based telemetry agent used for Space Shuttle ground processing and explains the problem domain, development of the agent software, benefits of AT technology, and deployment and sustaining engineering of the product.

Semmel, Glenn S.; Davis, Steven R.; Leucht, Kurt W.; Rowe, Dan A.; Smith, Kevin E.; Boloni, Ladislau

2005-01-01

329

Computer aided photographic engineering  

NASA Technical Reports Server (NTRS)

High speed photography is an excellent source of engineering data but only provides a two-dimensional representation of a three-dimensional event. Multiple cameras can be used to provide data for the third dimension but camera locations are not always available. A solution to this problem is to overlay three-dimensional CAD/CAM models of the hardware being tested onto a film or photographic image, allowing the engineer to measure surface distances, relative motions between components, and surface variations.

Hixson, Jeffrey A.; Rieckhoff, Tom

1988-01-01

330

A cascade thermoacoustic engine  

Microsoft Academic Search

A cascade thermoacoustic engine is described, consisting of one standing-wave stage plus two traveling-wave stages in series. Most of the acoustic power is produced in the efficient traveling-wave stages. The straight-line series configuration is easy to build and allows no Gedeon streaming. The engine delivers up to 2 kW of acoustic power, with an efficiency (the ratio of acoustic power

D. L. Gardner; G. W. Swift

2003-01-01

331

NGNP Engineering Status  

SciTech Connect

The objectives of Phase 1 Engineering and Design scope are to: 1) complete the initial design activities for a prototype nuclear reactor and plant that is capable of co-generating electricity, hydrogen, and process heat; 2) identify technological aspects of the NGNP that need further advancement by research and development activities; and 3) provide engineering support to the early licensing process, including technical input to white papers and developing the basis for future safety analyses.

John Collins

2010-08-01

332

Windmills for ramjet engine  

SciTech Connect

A solid fueled ramjet engine comprising solid fuel within a combustion chamber in the form of a hollow cylinder, and a windmill at the entrance to the hollow cylinder for promoting better distribution of the air, better mixing of the air and combustion gases, and more complete combustion of the solid fuel. The windmill is turned by the incoming airflow and can rotate a generator to provide a source of electrical power for the aircraft on which the engine is used.

Giles, H.L.

1983-01-18

333

Nitinol engine development  

Microsoft Academic Search

Unusual shape-change properties in a class of metals known as Shape Memory Alloys have been applied to the conversion of low temperature heat to mechanical work. A program for development of practical heat engines based on this phenomenon is underway, using the nickel--titanium alloy ''55-Nitinol.'' Details of the current prototype engine design and results of preliminary testing are discussed in

R. Banks; M. Wahlig

1976-01-01

334

Field Service Engineer  

NSDL National Science Digital Library

This video segment, adapted from ATETV, follows Travis Blackwell, a field service engineer working for ESAB Manufacturing, showcasing how technical college prepared him for work in this field. This video is a helpful for students considering or pursuing electromechanical engineering degrees to help illustrate possible career options upon graduation. Educators will also find a background essay, discussion questions, and standards alignment for the material. Running time for the video is 1:30.

2010-10-08

335

Engineer a Dam  

NSDL National Science Digital Library

In this activity, learners explore the function and engineering of dams and how dams have many uses and solve many problems in the world. Learners work in teams to engineer their own dam structure in a water trough that has the ability to release water in a controlled manner, as might be used in irrigation. Learners present their plans, execute and test their dams, and reflect on the experience.

Ieee

2014-05-22

336

Liquid metal thermoacoustic engine  

SciTech Connect

We are studying a liquid metal thermoacoustic engine both theoretically and experimentally. This type of engine promises to produce large quantities of electrical energy from heat at modest efficiency with no moving parts. A sound wave is usually thought of as consisting of pressure oscillations, but always attendant to the pressure oscillation are temperature oscillations. The combination produces a rich variety of ''thermoacoustic'' effects. These effects are usually so small that they are never noticed in everyday life; nevertheless under the right circumstances they can be harnessed to produce powerful heat engines, heat pumps, and refrigerators. In our liquid metal thermoacoustic engine, heat flow from a high temperature source to a low temperature sink generates a high-amplitude standing acoustic wave in liquid sodium. This acoustic power is converted to electric power by a simple magnetohydrodynamic effect at the acoustic oscillation frequency. We have developed a detailed thermoacoustic theory applicable to this engine, and find that a reasonably designed liquid sodium engine operating between 700/sup 0/C and 100/sup 0/C should generate about 60 W/cm/sup 2/ of acoustic power at about 1/3 of Carnot's efficiency. Construction of a 3000 W-thermal laboratory model engine has just been completed, and we have exciting preliminary experimental results as of the time of preparation of this manuscript showing, basically, that the engine works. We have also designed and built a 1 kHz liquid sodium magnetohydrodynamic generator and have extensive measurements on it. It is now very well characterized both experimentally and theoretically. The first generator of its kind, it already converts acoustic power to electric power with 40% efficiency. 16 refs., 5 figs.

Swift, G.W.; Migliori, A.; Wheatley, J.C.

1986-01-01

337

Globalizing Science and Engineering  

NASA Astrophysics Data System (ADS)

In this talk I will review recent trends in Science and Engineering Research and Education in an increasingly interconnected, ``flat'' world. The enormous economic transformation being fueled by technology will, over a period of time, lead to new models of interaction among universities, industry and governments. Scientists and Engineers in ``emergent'' countries may be expected to play a key role in this ``new'' world order.

Narayanamurti, Venkatesh

2008-03-01

338

Engineering Cartilage Tissue  

Microsoft Academic Search

\\u000a The objective of this chapter is to address timely work in the area of cartilage tissue engineering, with a specific focus\\u000a on the regeneration of articular cartilage. Many approaches have been used for the engineering of articular cartilage with\\u000a a wide range of materials formed into meshes, sponges, and hydrogels and with a range of cell sources including chondrocytes,\\u000a fibroblasts,

Robert L. Mauck; Jason A. Burdick

339

Imprecision in Engineering Design  

Microsoft Academic Search

Methods for incorporating imprecision in engineering design decision-making are briefly reviewed and compared. A tutorial is presented on the Method of Imprecision (MoI), a formal method, based on the mathematics of fuzzy sets, for representing and manipulating imprecision in engineering design. The results of a design cost estima- tion example, utilizing a new informal cost specification, are presented. The MoI

ERIK K. ANTONSSON; Kevin N. Otto

1995-01-01

340

Animals and Engineering  

NSDL National Science Digital Library

Students are introduced to the classification of animals and animal interactions. Students also learn why engineers need to know about animals and how they use that knowledge to design technologies that help other animals and/or humans. This lesson is part of a series of six lessons in which students use their growing understanding of various environments and the engineering design process, to design and create their own model biodome ecosystems.

Integrated Teaching And Learning Program

341

Manufacturing Engineering Skills  

NSDL National Science Digital Library

Manufacturing Engineering Skills provides an assessment of what the key manufacturing skills along with skill gaps are in the marketplace. Joe Loughrey is president and chief operating officer of Cummins Inc. and chairman of The Manufacturing Institute, the research and education arm of the National Association of Manufacturers. Additionally, Manufacturing Engineering Skills was shared by Mike Mohlar and by Roger Lang at an SME mfg executive roundtable in 2005 to provide clarity and encouragement about careers in manufacturing.

Loughrey, Joe

2009-08-03

342

Bioreactors for Tissue Engineering  

Microsoft Academic Search

\\u000a A variety of bioreactor designs exist today as a result of previous efforts by engineers and researchers to construct optimal\\u000a systems for a particular tissue engineering application. The primary purpose of any bioreactor is to provide a sterile cell\\u000a culture environment that can be tightly controlled. A bioreactor can be as simple as a petri dish and as complex as

Scott Maxson; David Orr; Karen J. L. Burg

343

Design an Ion Engine  

NSDL National Science Digital Library

This is a lesson about the design and operation of an ion propulsion engine. Learners will study the essential components and variables of an ion propulsion system. Activities include an on-line ion propulsion engine simulation and design. Included are changes in energy and fuel consumption as a result of variable changes (dependent/independent variable relationships). This is activity 5 of 5 in Structure and Properties of Matter: Ion Propulsion.

344

High School Teachers' Conceptions of Engineers and Engineering  

ERIC Educational Resources Information Center

This paper describes a workshop activity the author has carried out with 80 high school science teachers to enable them to overcome their stereotypical perceptions of engineers and engineering. The activity introduced them to the biographies of prominent women in engineering, and raised their awareness of these female engineers' contributions to…

Hoh, Yin Kiong

2012-01-01

345

Start Your Engines: Surfing with Search Engines for Kids.  

ERIC Educational Resources Information Center

Suggests that to be an effective educator and user of the Web it is essential to know the basics about search engines. Presents tips for using search engines. Describes several search engines for children and young adults, as well as some general filtered search engines for children. (AEF)

Byerly, Greg; Brodie, Carolyn S.

1999-01-01

346

Clinical image processing engine  

NASA Astrophysics Data System (ADS)

Our group provides clinical image processing services to various institutes at NIH. We develop or adapt image processing programs for a variety of applications. However, each program requires a human operator to select a specific set of images and execute the program, as well as store the results appropriately for later use. To improve efficiency, we design a parallelized clinical image processing engine (CIPE) to streamline and parallelize our service. The engine takes DICOM images from a PACS server, sorts and distributes the images to different applications, multithreads the execution of applications, and collects results from the applications. The engine consists of four modules: a listener, a router, a job manager and a data manager. A template filter in XML format is defined to specify the image specification for each application. A MySQL database is created to store and manage the incoming DICOM images and application results. The engine achieves two important goals: reduce the amount of time and manpower required to process medical images, and reduce the turnaround time for responding. We tested our engine on three different applications with 12 datasets and demonstrated that the engine improved the efficiency dramatically.

Han, Wei; Yao, Jianhua; Chen, Jeremy; Summers, Ronald

2009-02-01

347

Engine Removal Projection Tool  

SciTech Connect

The US Navy has over 3500 gas turbine engines used throughout the surface fleet for propulsion and the generation of electrical power. Past data is used to forecast the number of engine removals for the next ten years and determine engine down times between removals. Currently this is done via a FORTRAN program created in the early 1970s. This paper presents results of R&D associated with creating a new algorithm and software program. We tested over 60 techniques on data spanning 20 years from over 3100 engines and 120 ships. Investigated techniques for the forecast basis including moving averages, empirical negative binomial, generalized linear models, Cox regression, and Kaplan Meier survival curves, most of which are documented in engineering, medical and scientific research literature. We applied those techniques to the data, and chose the best algorithm based on its performance on real-world data. The software uses the best algorithm in combination with user-friendly interfaces and intuitively understandable displays. The user can select a specific engine type, forecast time period, and op-tempo. Graphical displays and numerical tables present forecasts and uncertainty intervals. The technology developed for the project is applicable to other logistic forecasting challenges.

Ferryman, Thomas A.; Matzke, Brett D.; Wilson, John E.; Sharp, Julia L.; Greitzer, Frank L.

2005-06-02

348

Compression relief engine brake  

SciTech Connect

A compression relief brake is described for four cycle internal-combustion engines, comprising: a pressurized oil supply; means for selectively pressurizing a hydraulic circuit with oil from the oil supply; a master piston and cylinder communicating with a slave piston and cylinder via the hydraulic circuit; an engine exhaust valve mechanically coupled to the engine and timed to open during the exhaust cycle of the engine the exhaust valve coupled to the slave piston. The exhaust valve is spring-based in a closed state to contact a valve seat; a sleeve frictionally and slidably disposed within a cavity defined by the slave piston which cavity communicates with the hydraulic circuit. When the hydraulic circuit is selectively pressurized and the engine is operating the sleeve entraps an incompressible volume of oil within the cavity to generate a displacement of the slave piston within the slave cylinder, whereby a first gap is maintained between the exhaust valve and its associated seat; and means for reciprocally activating the master piston for increasing the pressure within the previously pressurized hydraulic circuit during at least a portion of the expansion cycle of the engine whereby a second gap is reciprocally maintained between the exhaust valve and its associated seat.

Meneely, V.A.

1987-10-06

349

Gecko Layout Engine  

NSDL National Science Digital Library

The Gecko Layout Engine, an open-source project being developed by mozilla.org, is the heart of both the next Netscape as well as Mozilla Web browsers. The engine provides the core facilities for rendering various types of Web content (HTML, XML, images, etc.) on the screen for use in different applications. Some of these applications will be "standard" Web browsers such as Navigator, but the engine is designed so that its components can be used in any application to display content in a standard way. This release is a developer preview and provides a browser-like application as well as a simpler content viewer application. The viewers support several interesting standards including HTML 4.0, style sheets, XML 1.0, DOM, and other complex and basic types. Both applications are far from perfect and contain numerous bugs, so this release is intended for hard-core users only. For developers interested in embedding a layout engine in an application, document creators who want to tinker with new document types, or those who want to get a glimpse of aspects of tomorrow's Web browser, the preview release of the Gecko Layout Engine is a start. The Layout Engine is freely available as an executable for MacOS, Win32, and Linux; source code is also freely available from mozilla.org.

350

Intrinsically irreversible heat engine  

DOEpatents

A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1984-01-01

351

A KBES for integrated engineering  

Microsoft Academic Search

The expert process of engineering involves application of knowledge fundamental to the engineering process at one end, and of compiled knowledge in the form of heuristics gained through many years of experience at the other. Developments in Artificial Intelligence have made the process of computer aided engineering richer by enabling the simulation of this human process of engineering, which until

T. S. Sakthivel; V. Kalyanaraman

1993-01-01

352

National Academy of Forensic Engineers  

NSDL National Science Digital Library

The National Academy of Forensic Engineers provides a short definition of forensic engineering here. After reading through the definition, click the "Menu" link at the bottom of the page to access the site's main menu. From here, you can find more information on the National Academy of Forensic Engineers, and forensic engineering in general.

2008-04-07

353

Fuel conservative aircraft engine technology  

NASA Technical Reports Server (NTRS)

Technology developments for more fuel-efficiency subsonic transport aircraft are reported. Three major propulsion projects were considered: (1) engine component improvement - directed at current engines; (2) energy efficient engine - directed at new turbofan engines; and (3) advanced turboprops - directed at technology for advanced turboprop-powered aircraft. Each project is reviewed and some of the technologies and recent accomplishments are described.

Nored, D. L.

1978-01-01

354

Envera Variable Compression Ratio Engine  

Microsoft Academic Search

Aggressive engine downsizing, variable compression ratio and use of the Atkinson cycle are being combined to improve fuel economy by up to 40 percent relative to port fuel injected gasoline engines, while maintaining full engine power. Approach Engine downsizing is viewed by US and foreign automobile manufacturers as one of the best options for improving fuel economy. While this strategy

Charles Mendler

2011-01-01

355

Sst parametric engine library: design  

Microsoft Academic Search

A description is given of a family of parametric engines of consistent technology developed to support production supersonic transport studies evaluating the effect of the engine cycle on noise and airplane performance. Engine design assumptions, performance, weights, and dimensions are presented. The parametric engines, both turbojets and turbofans, were designed at the Mach 2.7 supersonic cruise flight condition with a

D. E. Hill; W. H. Scharf

1970-01-01

356

Published Research on Engineering Work  

Microsoft Academic Search

Understanding the nature of engineering work is a pre-requisite for improvement. We define engineering work as the planning, analysis, design, organization, administration and the final production or maintenance work that results in useful products, solutions and services. Engineering literature mostly focuses on the 'objects' and techniques that interest engineers: there are only a few accounts of the people that do

Sabbia Tilli; James Trevelyan

2007-01-01

357

Multidisciplinary education through software engineering  

Microsoft Academic Search

Software engineering is a multidisciplinary activity with professionals from many different backgrounds interacting together to build systems. For example, a software engineer may find him\\/herself interacting with technical writers, application specific specialists, database analysts, production engineers, and marketing professionals. One of the most important people to interact with the software engineer is the client who may not have very much

Susan A. Mengel; Locke Carter

1999-01-01

358

Automotive Stirling Engine Development Program  

NASA Technical Reports Server (NTRS)

Program status and plans are discussed for component and technology development; reference engine system design, the upgraded Mod 1 engine; industry test and evaluation; and product assurance. Four current Mod 1 engines reached a total of 2523 operational hours, while two upgraded engines accumulated 166 hours.

Nightingale, N.; Ernst, W.; Richey, A.; Simetkosky, M.; Smith, G.; Rohdenburg, C.; Antonelli, M. (editor)

1983-01-01

359

Automotive Stirling engine development program  

NASA Technical Reports Server (NTRS)

Activities performed on Mod I engine testing and test results, progress in manufacturing, assembling and testing of a Mod I engine in the United States, P40 Stirling engine dynamometer and multifuels testing, analog/digital controls system testing, Stirling reference engine manufacturing and reduced size studies, components and subsystems, and computer code development are summarized.

Ernst, W.; Piller, S.; Richey, A.; Simetkosky, M.; Antonelli, M. (editor)

1982-01-01

360

Automotive Stirling Engine Development Program  

NASA Technical Reports Server (NTRS)

Activities performed on Mod I engine testing and test results; the manufacture, assembly, and test of a Mod I engine in the United States; design initiation of the Mod I-A engine system; transient performance testing; Stirling reference engine manufacturing and reduced size studies; components and subsystems; and the study and test of low cost alloys are summarized.

Nightingale, N.; Ernst, W.; Richey, A.; Simetkosky, M.; Antonelli, M. (editor)

1982-01-01

361

ENGINEERING MANPOWER BULLETIN NUMBER 9.  

ERIC Educational Resources Information Center

DESIGNED TO INFORM LEADERS IN INDUSTRY, GOVERNMENT, AND EDUCATION, WHOSE RESPONSIBILITY INCLUDES AWARENESS OF ENGINEERING MANPOWER DEVELOPMENTS, THIS BULLETIN REPORTS A STUDY CONDUCTED BY THE ENGINEERING MANPOWER COMMISSION OF ENGINEERS IN THE ARMED SERVICES. THE WORK OF THE COMMISSION IS TO ASSURE THE MOST EFFECTIVE UTILIZATION OF ENGINEERING

ALDEN, JOHN D.

362

Engine coolant testing: Second symposium  

Microsoft Academic Search

This book presents the papers given at a symposium on the performance testing of engine coolants. Topics considered at the symposium included test methods for the development of supplemental additives for heavy-duty diesel engine coolants, a review of factors influencing coolant-metal interfaces in engines, corrosivity, and the evaluation of engine coolants by electrochemical methods.

Beal

1984-01-01

363

Salaries of Engineering Technicians, 1971.  

ERIC Educational Resources Information Center

This survey is the third in a series of studies of the salaries of engineering technicians conducted by the Engineering Manpower Commission of the Engineers Joint Council. The basic format for the salary presentations is maturity curves in which salary appears as a function of years of experience. Median salaries of all engineering technicians in…

Alden, John D.

364

IP over WDM network traffic engineering approaches  

Microsoft Academic Search

The wide spread deployment of DWDM and reconfigurable optical cross-connect equipment gives rise to a new generation of IP over WDM networks. These network combine gigabit and terabit IP routers with WDM switching and transmission systems to create a more flexible and dynamic network. As these networks grow, there is an urgent need to develop and implement new traffic engineering

J. Y. Wei

2002-01-01

365

Cross System Engineering in Next Generation Networks  

Microsoft Academic Search

We present a study on planning and management in 4G networks. The deployment of next generation networks is driven by the proliferation and integration of radio access technologies. This will enable cooperation between access networks based on the reallocation of users across different systems. Inter-system user reallocation will open a new research field: cross system engineering. We break into this

Pablo Vidales; Antonio Cuevas

2006-01-01

366

14 CFR 25.903 - Engines.  

Code of Federal Regulations, 2013 CFR

...the remaining engines; or (2...operation. (c) Control of engine rotation. ...individually in flight, except that...associated with engine control devices, systems...assurance that those engine operating limitations...any engine in flight must be...

2014-01-01

367

SNF Project Engineering Process Improvement Plan  

SciTech Connect

This plan documents the SNF Project activities and plans to support its engineering process. It describes five SNF Project Engineering initiatives: new engineering procedures, qualification cards process; configuration management, engineering self assessments, and integrated schedule for engineering activities.

DESAI, S.P.

2000-02-09

368

Topic in Depth - Forensic Engineering  

NSDL National Science Digital Library

The field of forensic engineering involves the study of products, materials, and structures that fail to function properly. Forensic engineers investigate the problem to locate the source of the failure in order to improve the product or structure. Principles of forensic engineering are applied broadly across many different disciplines. Evidence from forensic engineering investigations is often used in both civil and criminal courts. The resources in this folder provide an overview of many different aspects of the forensic engineering discipline.

2010-09-10

369

Automotive Stirling engine development program  

NASA Technical Reports Server (NTRS)

The study of high power kinematic Stirling engines for transportation use, testing of Mod I and Mod II Stirling engines, and component development activities are summarized. Mod II development testing was performed to complete the development of the basic engine and begin characterization of performance. Mod I engines were used for Mod II component development and to obtain independent party (U.S. Air Force) evaluation of Stirling engine vehicle performance.

Farrell, R.; Hindes, C.; Battista, R.; Connelly, M.; Cronin, M.; Howarth, R.; Donahue, A.; Slate, E.; Stotts, R.; Lacy, R.

1988-01-01

370

Automotive Stirling engine development program  

NASA Technical Reports Server (NTRS)

Activities performed on Mod I engine testing and test results, testing of the Mod I engine in the United States, Mod I engine characterization and analyses, Mod I Transient Test Bed fuel economy, upgraded Mod I performance and testing, Stirling engine reference engine manufacturing and reduced size studied, components and subsystems, and the study and test of low cost casting alloys are summarized. The overall program philosophy is outlined, and data and results are presented.

Nightingale, N.; Ernst, W.; Richey, A.; Simetkosky, M.; Smith, G.; Rohdenburg, C.; Vatsky, A.; Antonelli, M. (editor)

1983-01-01

371

Ceramic automotive Stirling engine program  

NASA Technical Reports Server (NTRS)

The Ceramic Automotive Stirling Engine Program evaluated the application of advanced ceramic materials to an automotive Stirling engine. The objective of the program was to evaluate the technical feasibility of utilizing advanced ceramics to increase peak engine operating temperature, and to evaluate the performance benefits of such an increase. Manufacturing cost estimates were also developed for various ceramic engine components and compared with conventional metallic engine component costs.

1986-01-01

372

International Journal of Engineering Education  

NSDL National Science Digital Library

The Dublin Institute of Technology maintains this site providing online access to volumes 10-15 of the International Journal of Engineering Education. This journal is an interdisciplinary forum for engineering education featuring articles about classroom and laboratory methods as well as engineering news. Special issues of the journal, such as the issue on Biomedical Engineering Education, highlight particular aspects of the diverse field of engineering. Most articles are in HTML format but some are .pdf files.

373

Internal combustion propulsion engine  

SciTech Connect

An internal combustion propulsion engine is described which includes: a spherical engine body having an internal combustion chamber, the engine body being provided with a radially projecting nozzle which has an outwardly divergent conical exhaust opening centrally disposed therein, the nozzle being an extension in the wall of the engine body; a plurality of spaced support struts attached to and outwardly projecting from the spherical engine body parallel to the central axis of the exhaust opening in the nozzle; a planar annular ring carried by the plurality of support struts, the annular ring being fixedly spaced from the projecting nozzle and being positioned so that its plane is orthogonal to the central axis of the conical exhaust opening; a plurality of cross-rib members attached to, extending radially inwardly from, and coplanar with, the annular ring, the cross-rib members being joined at the center of the annular ring; a piston cylinder fixedly mounted centrally on the plurality of cross-rib members coaxially with and facing the exhaust opening in spaced relation thereto.

Sing, P.

1988-07-05

374

DENTAL PULP TISSUE ENGINEERING  

PubMed Central

Dental pulp is a highly specialized mesenchymal tissue, which have a restrict regeneration capacity due to anatomical arrangement and post-mitotic nature of odontoblastic cells. Entire pulp amputation followed by pulp-space disinfection and filling with an artificial material cause loss of a significant amount of dentin leaving as life-lasting sequelae a non-vital and weakened tooth. However, regenerative endodontics is an emerging field of modern tissue engineering that demonstrated promising results using stem cells associated with scaffolds and responsive molecules. Thereby, this article will review the most recent endeavors to regenerate pulp tissue based on tissue engineering principles and providing insightful information to readers about the different aspects enrolled in tissue engineering. Here, we speculate that the search for the ideal combination of cells, scaffolds, and morphogenic factors for dental pulp tissue engineering may be extended over future years and result in significant advances in other areas of dental and craniofacial research. The finds collected in our review showed that we are now at a stage in which engineering a complex tissue, such as the dental pulp, is no longer an unachievable and the next decade will certainly be an exciting time for dental and craniofacial research.

Demarco, FF; Conde, MCM; Cavalcanti, B; Casagrande, L; Sakai, V; Nor, JE

2013-01-01

375

Special session - linking research findings on engineering student learning and engineering teaching: Implications for engineering education  

Microsoft Academic Search

The goal of this special interactive session is to engage attendees in (1) knitting the results of two linked studies (of engineering undergraduates and engineering faculty) into the larger body of engineering education scholarship and (2) developing ways of thinking about these findings that can be used to inform engineering education program planning and classroom practice. The findings are from

Cynthia Atman; Lorraine Fleming; Deborah Kilgore; Ron Miller; Sheri Sheppard; Karl Smith; Reed Stevens; Ruth Streveler; Jennifer Turns

2008-01-01

376

Resources on Engineering Education  

NSDL National Science Digital Library

On this website, Dr. Richard M. Felder, the Hoechst Celanese Professor Emeritus of Chemical Engineering at North Carolina State University, offers guidance, tips and resources for using techniques that he has found effective in teaching college level engineering courses. Numerous articles on learning styles, assessment, and instructional techniques are available here to download free of charge. Topics include active learning, cooperative learning and an Index of Learning Styles, which is "an on-line instrument used to assess preferences on four dimensions (active/reflective, sensing/intuitive, visual/verbal, and sequential/global) of a learning style model formulated by Richard M. Felder and Linda K. Silverman." Also posted here are some handouts for students with titles such as "How to Survive Engineering School" and "Tips on Test-Taking."

377

A cascade thermoacoustic engine.  

PubMed

A cascade thermoacoustic engine is described, consisting of one standing-wave stage plus two traveling-wave stages in series. Most of the acoustic power is produced in the efficient traveling-wave stages. The straight-line series configuration is easy to build and allows no Gedeon streaming. The engine delivers up to 2 kW of acoustic power, with an efficiency (the ratio of acoustic power to heater power) of up to 20%. An understanding of the pressure and volume-velocity waves is very good. The agreement between measured and calculated powers and temperatures is reasonable. Some of the measured thermal power that cannot be accounted for by calculation can be attributed to Rayleigh streaming in the two thermal buffer tubes with the largest aspect ratios. A straightforward extension of this work should yield cascade thermoacoustic engines with efficiencies of around 35-40% of the Carnot efficiency. PMID:14587591

Gardner, D L; Swift, G W

2003-10-01

378

A cascade thermoacoustic engine  

NASA Astrophysics Data System (ADS)

A cascade thermoacoustic engine is described, consisting of one standing-wave stage plus two traveling-wave stages in series. Most of the acoustic power is produced in the efficient traveling-wave stages. The straight-line series configuration is easy to build and allows no Gedeon streaming. The engine delivers up to 2 kW of acoustic power, with an efficiency (the ratio of acoustic power to heater power) of up to 20%. An understanding of the pressure and volumevelocity waves is very good. The agreement between measured and calculated powers and temperatures is reasonable. Some of the measured thermal power that cannot be accounted for by calculation can be attributed to Rayleigh streaming in the two thermal buffer tubes with the largest aspect ratios. A straightforward extension of this work should yield cascade thermoacoustic engines with efficiencies of around 35-40% of the Carnot efficiency.

Gardner, D. L.; Swift, G. W.

2003-10-01

379

Strutjet RBCC Engine Performance  

NASA Technical Reports Server (NTRS)

In the past two years Strutjet Rocket Based Combined Cycle (RBCC) engine has been tested extensively under the Advanced Reusable Technology (ART) contract from NASA MSFC. RBCC Engines combine the high thrust to weight of the rocket with the high efficiency of the ramjet engine. This propulsion system has the potential to reduce the cost of launching payloads to orbit by up to a factor of 100. In the ART program we have conducted over 100 hot fire tests. The propellants have been hydrogen and oxygen. The Modes tested have included the Air Augmented Rocket (AAR) from M = 0 to 2.4, the Ramjet at M = 2.4 & 6, Scramjet at M = 6 & 8, Scram/Rocket at Mach 8 and Ascent Rocket in Vacuum. This invited paper will present an overview of these test results and plans for future development of this propulsion cycle.

Bulman, Mel; Neill, Todd; Yam, Clement

1999-01-01

380

Mars methane engine  

NASA Technical Reports Server (NTRS)

The feasibility of an internal combustion engine operating on a mixture of methane, carbon dioxide, and oxygen has been verified by previous design groups for the Mars Methane Engine Project. Preliminary stoichiometric calculations examined the theoretical fuel-air ratios needed for the combustion of methane. Installation of a computer data acquisition system along with various ancillary components will enable the performance of the engine, running on the described methane mixture, to be optimized with respect to minimizing excess fuel. Theoretical calculations for stoichiometric combustion of methane-oxygen-carbon dioxide mixtures yielded a ratio of 1:2:4.79 for a methane-oxygen-carbon dioxide mixture. Empirical data shows the values to be closer to 1:2.33:3.69 for optimum operation.

Bui, Hung; Coletta, Chris; Debois, Alain

1994-01-01

381

Tissue engineering in endodontics.  

PubMed

Tissue engineering is the science of design and manufacture of new tissues to replace impaired or damaged ones. The key ingredients for tissue engineering are stem cells, the morphogens or growth factors that regulate their differentiation, and a scaffold of extracellular matrix that constitutes the microenvironment for their growth. Recently, there has been increasing interest in applying the concept of tissue engineering to endodontics. The aim of this study was to review the body of knowledge related to dental pulp stem cells, the most common growth factors, and the scaffolds used to control their differentiation, and a clinical technique for the management of immature non-vital teeth based on this novel concept. PMID:20032600

Saber, Shehab El-Din M

2009-12-01

382

Free-piston engine  

DOEpatents

A combustion system which can utilize high compression ratios, short burn durations, and homogeneous fuel/air mixtures in conjunction with low equivalence ratios. In particular, a free-piston, two-stroke autoignition internal combustion engine including an electrical generator having a linear alternator with a double-ended free piston that oscillates inside a closed cylinder is provided. Fuel and air are introduced in a two-stroke cycle fashion on each end, where the cylinder charge is compressed to the point of autoignition without spark plugs. The piston is driven in an oscillating motion as combustion occurs successively on each end. This leads to rapid combustion at almost constant volume for any fuel/air equivalence ratio mixture at very high compression ratios. The engine is characterized by high thermal efficiency and low NO.sub.x emissions. The engine is particularly suited for generating electrical current in a hybrid automobile.

Van Blarigan, Peter (Truckee, CA)

2001-01-01

383

Software Engineering Improvement Plan  

NASA Technical Reports Server (NTRS)

In performance of this task order, bd Systems personnel provided support to the Flight Software Branch and the Software Working Group through multiple tasks related to software engineering improvement and to activities of the independent Technical Authority (iTA) Discipline Technical Warrant Holder (DTWH) for software engineering. To ensure that the products, comments, and recommendations complied with customer requirements and the statement of work, bd Systems personnel maintained close coordination with the customer. These personnel performed work in areas such as update of agency requirements and directives database, software effort estimation, software problem reports, a web-based process asset library, miscellaneous documentation review, software system requirements, issue tracking software survey, systems engineering NPR, and project-related reviews. This report contains a summary of the work performed and the accomplishments in each of these areas.

2006-01-01

384

Gas turbine engine  

SciTech Connect

The gas turbine engine includes a centrifugal fan having radial blades for receiving inlet air through inner entrance openings to spaces between adjacent blades. The air passes through outer exit openings from the spaces between the blades. Stationary inner and outer circumferential segments define closure members which successively eclipse the inner entrance and outer exit openings of the centrifugal fan blades when the fan rotates to position adjacent blades between the closure members. The closure members and space between the blades thus define closed combustion chambers. Fuel is injected and ignited so that continuous combustion takes place at constant volume, the exhaust gases escaping through the outer exit openings when rotation of the fan positions these openings beyond the outer closure members. This continuous combustion at constant volume provides for increased efficiency in the gas turbine engine over the brayton cycle constant pressure type turbine engine.

Gertz, D.C.

1980-12-30

385

Engine balancing system  

SciTech Connect

This patent describes a single-cylinder engine comprising a crank shaft, a crank web connected to the crank shaft, a connecting rod connected to the crank web through a crank pin, a cylinder, and a piston connected to the connecting rod to move in reciprocatory movement within the cylinder. An engine balancing system is described comprising: a counter balancer supported by the crank web; and a single primary balancer rotatably supported by a shaft extending parallel to the crank shaft. The single primary balancer is driven to rotate at a velocity equal to that of the counterbalancer in a direction opposite to a direction of rotation of the counterbalancer; wherein a center line of the cylinder of the engine deviates from a center of rotation of the crank shaft toward the single primary balancer.

Fujikawa, T.; Hirata, M.; Tamba, S.; Miguchi, A.

1986-12-16

386

The Synergistic Engineering Environment  

NASA Technical Reports Server (NTRS)

The Synergistic Engineering Environment (SEE) is a system of software dedicated to aiding the understanding of space mission operations. The SEE can integrate disparate sets of data with analytical capabilities, geometric models of spacecraft, and a visualization environment, all contributing to the creation of an interactive simulation of spacecraft. Initially designed to satisfy needs pertaining to the International Space Station, the SEE has been broadened in scope to include spacecraft ranging from those in low orbit around the Earth to those on deep-space missions. The SEE includes analytical capabilities in rigid-body dynamics, kinematics, orbital mechanics, and payload operations. These capabilities enable a user to perform real-time interactive engineering analyses focusing on diverse aspects of operations, including flight attitudes and maneuvers, docking of visiting spacecraft, robotic operations, impingement of spacecraft-engine exhaust plumes, obscuration of instrumentation fields of view, communications, and alternative assembly configurations. .

Cruz, Jonathan

2006-01-01

387

Teach Engineering: Energy  

NSDL National Science Digital Library

This is an instructional unit for Grades 3-5 on the topic of energy, designed to integrate science principles with engineering practices. It includes nine lesson plans and activities to introduce students to a range of energy types, including electrical, light, sound, and thermal. Through numerous hands-on activities, students explore a wide range of scientific topics related to the fundamentals of energy: kinetic and potential energy, light waves, reflection, refraction, convection, sound waves, volume, pitch, frequency, radiation, heat capacity, heat transfer, specific heat. These concepts are presented in the context of engineering applications pertinent to our everyday lives. Classroom activities are designed for easy set-up within the elementary classroom. All lessons and activities are aligned to national educational standards. This resource is part of TeachEngineering.org, a digital library collection.

Engineering, University O.

388

Engineers Against Poverty  

NSDL National Science Digital Library

Engineers Against Poverty (EAP) is a non-governmental organization that works in the field of engineering and international development. EAP works to harness members' combined skills to alleviate poverty throughout the world and work on the challenges involved with sustainable development along the way. The materials on the site are divided into five sections, including Major Initiatives, Key Issues, Publications, and EAP's Programme. A good place to start is the Major Initiatives area. Here users can learn about some of the key issues and challenges in the domain of engineering, poverty reduction, and more. The EAP's Programme area has information and working papers on the organization's work in transforming extractive industries and infrastructure projects. Finally, the Publications area contains works like "Employment Intensive Road Construction" and "Climate Compatible Development in the Infrastructure Sector Overview."

2009-01-01

389

Grant Prideco: Engineering Toolkit  

NSDL National Science Digital Library

The Engineering Toolkit is a diverse assortment of utilities and interactive tools developed by a drilling manufacturing company. Possibly the most useful item in the toolkit is the Equation Bank, which contains nearly 100 equation solvers. Most are related to civil engineering and calculate effects due to pressure, parameters for pipe threading, and more. Another resource is the unit converter, a powerful tool with both metric and English units and over 20 dimensions from which to choose. A large glossary defines hundreds of engineering terms. The other two features are a pipe building tool and a database of technical specification sheets; these are probably not as useful as the other items of the toolkit.

2006-01-25

390

EngineersToolbox  

NSDL National Science Digital Library

The EngineersToolbox (ETB) is a handy Java applet that both students and professionals will find useful. Geared mainly toward mechanical, civil, and structural engineers, the ETB has a wide range of functions. Its main categories are Static Analysis, Dynamic Analysis, Fracture Mechanics, Numerical Analysis, and Other Utilities. Each category has several more specific modules that perform calculations of stress and strain, fatigue, polynomial roots, and others. Graphical modules such as Bode plots and two-dimensional function plots are even useful for non-engineers, and there is an extensive material properties database. An excellent interface and easy-to-use controls make this software a great tool for school or work.

2000-01-01

391

Engineering Technology Pathways (ETP)  

NSDL National Science Digital Library

This project is developing a curricula and an implementation model that has provided in increased ability and fostered the pursuit of higher education in the field of engineering. The curricula and model is resulting in middle and high school students applying critical math, science, and technology knowledge while they plan, design, test, revise, and implement engineering activities. As a result of this project, is standards-based units of study at the 7-12 level and an articulated pathway for learners to successfully transition to two-year engineering technician programs. The units of study are assembled into two separate curricula for the middle and high school levels and a model implementation plan. The site includes information about the project, educator resources, project resources and presentations, and contact information.

2010-10-07

392

Neutrons and Nuclear Engineering  

SciTech Connect

Oak Ridge National Laboratory hosted two workshops in April 2007 relevant to nuclear engineering education. In the Neutron Stress, Texture, and Phase Transformation for Industry workshop [http://neutrons.ornl.gov/workshops/nst2/], several invited speakers gave examples of neutron stress mapping for nuclear engineering applications. These included John Root of National Research Council of Canada, Mike Fitzpatrick of the UK's Open University, and Yan Gao of GE Global Research on their experiences with industrial and academic uses of neutron diffraction. Xun-Li Wang and Camden Hubbard described the new instruments at ORNL that can be used for such studies. This was preceded by the Neutrons for Materials Science and Engineering educational symposium [http://neutrons.ornl.gov/workshops/edsym2007]. It was directed to the broad materials science and engineering community based in universities, industry and laboratories who wish to learn what the neutron sources in the US can provide for enhancing the understanding of materials behavior, processing and joining. Of particular interest was the presentation of Donald Brown of Los Alamos about using 'Neutron diffraction measurements of strain and texture to study mechanical behavior of structural materials.' At both workshops, the ORNL neutron scattering instruments relevant to nuclear engineering studies were described. The Neutron Residual Stress Mapping Facility (NRSF2) is currently in operation at the High Flux Isotope Reactor; the VULCAN Engineering Materials Diffractometer will begin commissioning in 2008 at the Spallation Neutron Source. For characteristics of these instruments, as well as details of other workshops, meetings, capabilities, and research proposal submissions, please visit http://neutrons.ornl.gov. To submit user proposals for time on NRSF2 contact Hubbard at hubbardcr@ornl.gov.

Ekkebus, Allen E [ORNL

2007-01-01

393

Google Earth Engine  

NASA Astrophysics Data System (ADS)

The Google Earth Engine platform is a system designed to enable petabyte-scale, scientific analysis and visualization of geospatial datasets. Earth Engine provides a consolidated environment including a massive data catalog co-located with thousands of computers for analysis. The user-friendly front-end provides a workbench environment to allow interactive data and algorithm development and exploration and provides a convenient mechanism for scientists to share data, visualizations and analytic algorithms via URLs. The Earth Engine data catalog contains a wide variety of popular, curated datasets, including the world's largest online collection of Landsat scenes (> 2.0M), numerous MODIS collections, and many vector-based data sets. The platform provides a uniform access mechanism to a variety of data types, independent of their bands, projection, bit-depth, resolution, etc..., facilitating easy multi-sensor analysis. Additionally, a user is able to add and curate their own data and collections. Using a just-in-time, distributed computation model, Earth Engine can rapidly process enormous quantities of geo-spatial data. All computation is performed lazily; nothing is computed until it's required either for output or as input to another step. This model allows real-time feedback and preview during algorithm development, supporting a rapid algorithm development, test, and improvement cycle that scales seamlessly to large-scale production data processing. Through integration with a variety of other services, Earth Engine is able to bring to bear considerable analytic and technical firepower in a transparent fashion, including: AI-based classification via integration with Google's machine learning infrastructure, publishing and distribution at Google scale through integration with the Google Maps API, Maps Engine and Google Earth, and support for in-the-field activities such as validation, ground-truthing, crowd-sourcing and citizen science though the Android Open Data Kit.

Gorelick, N.

2012-12-01

394

(Genetically engineered microorganisms)  

SciTech Connect

The traveler attended the First International Conference on the Release of Genetically Engineered Microorganisms at the request of the United Nations Environment Programme (UNEP). The purpose of the conference was to provide an international forum for the discussion of the issues and concerns related to the release of genetically engineered microorganisms for environmental and agricultural applications. The cost of attendance was paid by UNEP, a group with whom a small Work-for-Others contract (to participate in developing international biosafety guidelines) is under discussion.

Sharples, F.E.

1988-04-18

395

Engineer a Sneaker  

NSDL National Science Digital Library

The goal is for students to understand the basics of engineering that go into the design of sneakers. The bottom or sole of a sneaker provides support, cushioning and traction. In addition, the sole is flexible and may have some fashion-based functions such as cool colors or added height. Sneakers are well-engineered products, utilizing a mix of materials to create highly functional, useful shoes. For the activity challenge, students decide on specific design requirements, such as good traction or deep cushioning, and then use a variety of materials to build prototype shoes that meet the design criteria.

Making The Connection

396

Off-Road Engineering  

NSDL National Science Digital Library

This video, from WGBH, takes a look at the Baha SAE off-road competition, organized by SAE (Society of Automotive Engineers) International. The video explains how students take an off-road vehicle all the way from the design phase to completion and the competition. Here, visitors will see the different tools and techniques that students use to design and build their vehicles. This video is helpful for anyone looking into the automotive engineering field and the skills necessary to be successful in it. Educators will also find a background essay, discussion questions, and standards alignment for the material. Running time for the video is 3:52.

2010-12-07

397

Neovascularization in Tissue Engineering  

PubMed Central

A prerequisite for successful tissue engineering is adequate vascularization that would allow tissue engineering constructs to survive and grow. Angiogenic growth factors, alone and in combination, have been used to achieve this, and gene therapy has been used as a tool to enable sustained release of these angiogenic proteins. Cell-based therapy using endothelial cells and their precursors presents an alternative approach to tackling this challenge. These studies have occurred on a background of advancements in scaffold design and assays for assessing neovascularization. Finally, several studies have already attempted to translate research in neovascularization to clinical use in the blossoming field of therapeutic angiogenesis.

Chung, Jennifer C.-Y.; Shum-Tim, Dominique

2012-01-01

398

Advanced engineering analysis  

NASA Astrophysics Data System (ADS)

The Advanced Engineering Analysis project is being used to improve the breadth of engineering analysis types, the particular phenomena which may be simulated, and also increase the accuracy and usability of the results of both new and current types of simulations and analyses. This is an interim report covering several topics under this project. Information on two new implementations of failure criteria for metal forming, the implementation of coupled fluid flow/heat transfer analysis, a correction to a contact solution problem with a 3-D parabolic brick finite element, and the development and implementation of a file translator to link I-DEAS to DYNA3D is provided.

Freeman, W. R.; Lee, M. D.; Mahoney, J. F.; Schrank, M. G.

1992-11-01

399

Readings in Systems Engineering  

NASA Technical Reports Server (NTRS)

This present collection was inspired by seven papers prepared by the NASA Alumni League, illustrating the members' systems engineering experience. These papers make up the heart of this collection. We have supplemented them with papers describing industry processes and other governmental practices to illustrate the diversity of systems engineering as it is formulated and practiced. This is one discipline that clearly benefits from cross-fertilization and infusion of new ideas. There is also a wide variety of tools and techniques described herein, some standard and some unique.

Hoban, Francis T. (editor); Lawbaugh, William M. (editor)

1993-01-01

400

Science and Engineering Conference  

NSDL National Science Digital Library

This is an activity about how to measure the interplanetary magnetic field, or IMF. Learners will act as scientists and engineers at a conference to explain their discoveries from earlier activities of the larger resource where they designed their own ways to measure the IMF. This activity should be used to illustrate how scientists and engineers working with the NASA STEREO-IMPACT mission have solved the same puzzle. This is Activity 3 in Session 3 of a larger resource, Exploring Magnetism in the Solar Wind.

401

Engine costs for reusability  

NASA Technical Reports Server (NTRS)

The advanced Launch System (ALS) program goals demand an order-of-magnitude reduction in costs over existing launch vehicle propulsion systems. Studies suggest that reusable engines provide cost advantages over expendable propulsion systems. Early studies are quantifying operations costs, and cost sensitivities to engine production and operations variables. ALS production and operations philosophies enhance the potential of an affordable, operationally flexible launch vehicle propulsion system. The assumptions made and criteria set during the initial planning for the operations phase of the ALS highlight the changes for implementing such a system.

Schindler, Carla M.; Lansaw, John

1990-01-01

402

Rotary engine research  

NASA Astrophysics Data System (ADS)

A development history is presented for NASA's 1983-1991 Rotary Engine Enablement Program, emphasizing the CFD approaches to various problems that were instituted from 1987 to the end of the program. In phase I, a test rig was built to intensively clarify and characterize the stratified-charge rotary engine concept. In phase II, a high pressure, electronically controlled fuel injection system was tested. In phase III, the testing of improved fuel injectors led to the achievement of the stipulated 5 hp/cu inch specific power goal. CFD-aided design of advanced rotor-pocket shapes led to additional performance improvements.

1992-06-01

403

Retention of the Best Science and Engineering Graduates in Science and Engineering  

NSF Publications Database

Retention of the Best Science and Engineering Graduates in Science and Engineering Hypertext Format ... Retention of the Best Science and Engineering Graduates in Science and Engineering Portable Document ...

404

Navy Distributed Engineering Plant - Value Added for the Fleet.  

National Technical Information Service (NTIS)

The Navy's Distributed Engineering Plant (DEP) was rapidly established in 1998 to address critical Fleet interoperability issues. The primary mission of the DEP and its associated testing processes is to characterize the interoperability of each deploying...

J. H. McConnell

2002-01-01

405

Engineering directorate technical facilities catalog  

NASA Technical Reports Server (NTRS)

The Engineering Directorate Technical Facilities Catalog is designed to provide an overview of the technical facilities available within the Engineering Directorate at the National Aeronautics and Space Administration (NASA), Lyndon B. Johnson Space Center (JSC) in Houston, Texas. The combined capabilities of these engineering facilities are essential elements of overall JSC capabilities required to manage and perform major NASA engineering programs. The facilities are grouped in the text by chapter according to the JSC division responsible for operation of the facility. This catalog updates the facility descriptions for the JSC Engineering Directorate Technical Facilities Catalog, JSC 19295 (August 1989), and supersedes the Engineering Directorate, Principle test and Development Facilities, JSC, 19962 (November 1984).

Maloy, Joseph E.

1993-01-01

406

Young Engineers: Tomorrow's Ideas Today  

NSDL National Science Digital Library

This is the official homepage of Young Engineers, "a UK educational charity whose purpose is to inspire young people to recognise the importance and excitement of a career in engineering." Being tailored to British and other UK students, the site contains information on engineering competitions in the region, including coverage of past competitions and details on entering future events. Despite having substantial resources for prospective engineers in the UK, there is plenty of additional material suitable for students across the globe. Notable engineers and inventions are highlighted, and links are provided to other sites encouraging careers in engineering.

407

Chemical Engineering in Space.  

National Technical Information Service (NTIS)

The aerospace industry has long been perceived as the domain of both physicists and mechanical engineers. This perception has endured even though the primary method of providing the thrust necessary to launch a rocket into space is chemical in nature. The...

D. A. Lobmeyer B. Meneghelli

2001-01-01

408

Engineering a Classroom Discussion.  

ERIC Educational Resources Information Center

Describes physical science activities that civil/mechanical engineers (serving as resource persons) can use with students during units on force, work, center of gravity, simple machines, and other basic mechanics concepts. Activities are adapted from Career Oriented Modules to Explore Topics in Science for grades 5-9 (COMETS). (Author/JN)

Smith, Walter E.

1983-01-01

409

Unsymmetrical free piston engine  

Microsoft Academic Search

This patent describes a compact and substantially vibration free engine of the unsymmetrical free piston type for driving a compressor or other energy absorbing device. It comprises: a cylinder, support means for supporting one end only of the cylinder, first and second pistons in the cylinder with a combustion chamber therebetween. The first piston having a first rod extending through

Braun

1990-01-01

410

Regenerated internal combustion engine  

Microsoft Academic Search

A thermally regenerated four-stroke cycle internal combustion engine, is described comprising: a cold side cylinder, having: an intake valve located through cold side cylinder wall for drawing air into the cold side cylinder; an exhaust valve independently located through the cold side cylinder wall for emitting exhaust gases; and a cold side piston connected to a crank shaft through a

1986-01-01

411

Rotary internal combustion engine  

Microsoft Academic Search

This patent describes an internal combustion rotary engine. It comprises: a housing; a casing mounted in the housing and defining, at least in part, an annular circular piston chamber, a continuous chamber slot formed in the casing and extending the full interior circumference thereof, and a combustion chamber; a shaft mounted in the housing for rotation about its axis and

Bayless

1990-01-01

412

Engine economizer control unit  

SciTech Connect

A two-position pilot-operated control unit is provided for reducing the fuel-to-air ratio and for simultaneously advancing the ignition of a piston-type aircraft engine so as to achieve a significant saving in fuel consumption during flight operations.

Dupont, A.A.

1980-05-06

413

Engine economizer control unit  

Microsoft Academic Search

A two-position pilot-operated control unit is provided for reducing the fuel-to-air ratio and for simultaneously advancing the ignition of a piston-type aircraft engine so as to achieve a significant saving in fuel consumption during flight operations.

Dupont

1980-01-01

414

Boussard Interstellar Ramjet Engine  

NASA Technical Reports Server (NTRS)

The Boussard Interstellar Ramjet engine concept uses interstellar hydrogen scooped up from its environment as the spacecraft passes by to provide propellant mass. The hydrogen is then ionized and then collected by an electromagentic field. In this image, an onboard laser is uded to heat the plasma, and the laser or electron beam is used to trigger fusion pulses thereby creating propulsion.

2004-01-01

415

Steam Engine Library  

NSDL National Science Digital Library

Provided by the Department of History of the University of Rochester, NY, this site contains the full text or selections from thirteen original works on different aspects and history of the steam engine. Most of the entries are from the nineteenth-century and many include diagrams, tables, and illustrations.

416

Blade for turbine engine  

NASA Technical Reports Server (NTRS)

A blade for a turbine engine having a centerline. The blade comprises: a root section extending at an angle relative to the centerline; and an airfoil section extending from the root section. The root section is directly adjacent said airfoil section. In other words, the blade is neckless. The blade is part of a rotor assembly, and is preferably a fan blade.

Suciu, Gabriel L. (Inventor); Babu, Michael (Inventor); Murdock, James R. (Inventor)

2004-01-01

417

Extinction Prevention via Engineering  

NSDL National Science Digital Library

Species extinction is happening at an alarming rate according to scientists. In this lesson, students are asked to consider why extinction is a problem that we should concern us. They are taught that destruction of habitat is the main reason many species are threatened. The lesson explores ways that engineers can help save endangered species.

Integrated Teaching And Learning Program

418

Materials Science and Engineering  

NSDL National Science Digital Library

This website, created by the Massachusetts Institute of Technology, provides insight into the Department of Materials Science and Engineering at their institution. This discipline explores the relationships between structure and properties in all classes of materials including metals, ceramics, electronic materials, and biomaterials. The site features courses, lecture notes, assignments, solutions, textbooks, projects, examples, exams and study groups.

2011-01-21

419

Internal combustion engine  

Microsoft Academic Search

This patent describes an internal combustion engine having a main combustion chamber in a top portion of a piston, and an ignition chamber in a cylinder head, which is provided with a fuel injection valve and an ignition plug, characterized in that the direction in which fuel is ejected from the fuel injection valve is in accordance with the forward

Nagakura

1987-01-01

420

Internal combustion engine  

Microsoft Academic Search

An internal combustion engine is described comprising: a housing including at least one lobe having a lobe inner surface symmetrically disposed about a lobe axis and conforming to a portion of a spherical surface centered on a lobe center disposed on the lobe axis, wherein a drive shaft aperture intersecting the lobe inner surface is formed through the housing along

Fenton

1986-01-01

421

Fundamentals of Diesel Engines.  

ERIC Educational Resources Information Center

This student guide, one of a series of correspondence training courses designed to improve the job performance of members of the Marine Corps, deals with the fundamentals of diesel engine mechanics. Addressed in the three individual units of the course are the following topics: basic principles of diesel mechanics; principles, mechanics, and…

Marine Corps Inst., Washington, DC.

422

Plasma engineering for MARS  

SciTech Connect

The two-year Mirror Advanced Reactor Study (MARS) has resulted in the conceptual design of a commercial, electricity-producing fusion reactor based on tandem mirror confinement. The physics basis for the MARS reactor was developed through work in two highly coupled areas of plasma engineering: magnetics and plasma performance.

Carlson, G.A.; Baldwin, D.E.; Barr, W.L.

1983-03-24

423

Nitinol Engine Development.  

National Technical Information Service (NTIS)

Unusual shape-change properties in a class of metals known as Shape Memory Alloys have been applied to the conversion of low temperature heat to mechanical work. A program for development of practical heat engines based on this phenomenon is underway, usi...

R. Banks M. Wahlig

1976-01-01

424

Solid state heat engine  

Microsoft Academic Search

A compact solid state turbine heat engine can be devised by pairing the nitinol elements. Each element is characterized by being in thermal contact with at least one hot water and one cold water bath and mechanically coupled to at least one driven pulley and driver pulley. A second nitinol element is similarly configured with a driver pulley, driven pulley,

Cory

1981-01-01

425

Solid state heat engine  

SciTech Connect

A compact solid state turbine heat engine can be devised by pairing the nitinol elements. Each element is characterized by being in thermal contact with at least one hot water and one cold water bath and mechanically coupled to at least one driven pulley and driver pulley. A second nitinol element is similarly configured with a driver pulley, driven pulley, hot and cold water bath. The driver pulley associated with the first nitinol element is mechanically coupled to the driven pulley of the second nitinol element. Similarly, the driver pulley of the second nitinol element is mechanically coupled to the driven pulley of the first nitinol element. The paired nitinol elements form a compound solid state turbine engine wherein each nitinol element lies in a single plane and wherein the engine may be combined with a plurality of such pairs for increased power output. The nitinol elements may also incorporate a snubber to limit the strain on the element and the engine may further incorporate a variable radius pulley to increase the efficiency of mechanical conversion.

Cory, J.S.

1981-12-15

426

Engineering Science Specialization: Ohio  

NSDL National Science Digital Library

This document from the Great Lakes Fuel Cell Education Partnership contains information on the engineering science specialization program for the state of Ohio. The document includes the basic required curriculum for this program of study, including course titles, required competencies and related academic areas that will be integrated (mathematics and language arts, for example). This document may be downloaded in PDF file format.

2012-02-16

427

Engineering in Sports  

NSDL National Science Digital Library

Imagining themselves arriving at the Olympics gold medal soccer game in Beijing, students begin to think about how engineering is involved in sports. After a discussion of kinetic and potential energy, an associated hands-on activity gives students an opportunity to explore energy-absorbing materials as they try to protect an egg from being crushed.

Integrated Teaching And Learning Program

428

More About Laser Engines.  

National Technical Information Service (NTIS)

Laser engines of the plasma-forming fuel chamber type will probably become a reality in the near future. But the problems have not yet been solved of how to design suitable exhaust systems and mechanically suitable fuel chambers of workably small size. No...

M. Tutekov

1974-01-01

429

Liquid Rocket Engine Testing  

NASA Technical Reports Server (NTRS)

Comprehensive Liquid Rocket Engine testing is essential to risk reduction for Space Flight. Test capability represents significant national investments in expertise and infrastructure. Historical experience underpins current test capabilities. Test facilities continually seek proactive alignment with national space development goals and objectives including government and commercial sectors.

Rahman, Shamim

2005-01-01

430

Engineering the Future  

Microsoft Academic Search

A collaborative effort to strengthen the U.S. power and energy workforce. Some of us are old, some of us are young, and some of us refuse to acknowledge the difference. At any age, electric power and energy engineers contribute to the sustainability of life on this planet and the future growth of technology and society on all fronts. At a

Wanda Reder; Anjan Bose; Alex Flueck; Mark Lauby; Dagmar Niebur; Ann Randazzo; Dennis Ray; Gregory Reed; Peter Sauer; Frank Wayno

2010-01-01

431

Neoproteoglycans in tissue engineering  

PubMed Central

Proteoglycans, comprised of a core protein to which glycosaminoglycan chains are covalently linked, are an important structural and functional family of macromolecules found in the extracellular matrix. Advances in our understanding of biological interactions have lead to a greater appreciation for the need to design tissue engineering scaffolds that incorporate mimetics of key extracellular matrix components. A variety of synthetic and semisynthetic molecules and polymers have been examined by tissue engineers that serve as structural, chemical and biological replacements for proteoglycans. These proteoglycan mimetics have been referred to as neoproteoglycans and serve as functional and therapeutic replacements for natural proteoglycans that are often unavailable for tissue engineering studies. Although neoproteoglycans have important limitations, such as limited signaling ability and biocompatibility, they have shown promise in replacing the natural activity of proteoglycans through cell and protein binding interactions. This review focuses on the recent in vivo and in vitro tissue engineering applications of three basic types of neoproteoglycan structures, protein–glycosaminoglycan conjugates, nano-glycosaminoglycan composites and polymer–glycosaminoglycan complexes.

Weyers, Amanda; Linhardt, Robert J.

2014-01-01

432

Stirling engines for automobiles  

NASA Technical Reports Server (NTRS)

The results of recent and ongoing automobile Stirling engine development efforts are reviewed and technology status and requirements are identified. Key technology needs include those for low cost, high temperature (1300 - 1500 F) metal alloys for heater heads, and reliable long-life, low-leakage shaft seals. Various fuel economy projections for Stirling powered automobiles are reviewed and assessed.

Beremand, D. G.

1979-01-01

433

Safe genetically engineered plants  

Microsoft Academic Search

The application of genetic engineering to plants has provided genetically modified plants (GMPs, or transgenic plants) that are cultivated worldwide on increasing areas. The most widespread GMPs are herbicide-resistant soybean and canola and insect-resistant corn and cotton. New GMPs that produce vaccines, pharmaceutical or industrial proteins, and fortified food are approaching the market. The techniques employed to introduce foreign genes

D. Rosellini; F. Veronesi

2007-01-01

434

Engine throttle blade sealing  

SciTech Connect

This patent describes improvement in an internal combustion engine having a throttle body assembly for selectively throttling the flow of combustion air into the engine and comprising a throttle body having a circular throughbore of given transverse cross sectional area, a blade disposed in the throughbore and supported on the body for rotary positioning about an axis that is transverse to the throughbore, and a stop that establishes engine idle by stopping the blade at a particular position in the direction of increasing throttling as the throughbore by the blade. The improvement comprises the blade comprising a main blade body of relatively rigid material and of area in plan that is less than the given transverse cross sectional area, and a peripheral sealing means that is disposed on, and extends circumferentially around at least a majority of the radially outer margin of the main blade body, the sealing means having a resilient radially outer portion whose radially outermost portion lies on a circle whose diameter is essentially equal to that of the circular throughbore, and the sealing means cooperating with the throughbore such that the blade is operable to be positioned about the axis in the direction of increasing throttling to cause increasing throttling of the flow of combustion air into the engine.

Daly, P.D.; McArthur, R.A.

1991-07-30

435

Low thrust monopropellant engine  

NASA Technical Reports Server (NTRS)

The engine has a conventional body and nozzle configuration. The monopropellant fuel is fed into the thruster with dual injection tubes via an injector shell with dual spray jets. The spray jets are positioned generally opposed to each other. A heater screen pack combination thermally decomposes the fuel after injection into the combustion chamber of the thruster.

Kuenzly, J. D. (inventor)

1981-01-01

436

Liquid rocket engine turbines  

NASA Technical Reports Server (NTRS)

Criteria for the design and development of turbines for rocket engines to meet specific performance, and installation requirements are summarized. The total design problem, and design elements are identified, and the current technology pertaining to these elements is described. Recommended practices for achieving a successful design are included.

1974-01-01

437

Medium bypass turbofan engine  

Microsoft Academic Search

A gas turbine engine of the turbofan type is described which consists of: A. a generally tubular axially extending housing assembly defining a radially outer annular bypass duct extending from the inlet end of the housing assembly to the exhaust end thereof; B. an annular burner positioned within the housing assembly radially inwardly of the bypass duct and concentric to

S. B. Williams; J. F. Jones; D. K. Dorer

1986-01-01

438

High voltage engineering  

Microsoft Academic Search

This book presents a comprehensive treatment of high voltage engineering fundamentals at the introductory and intermediate levels. It covers: techniques used for generation and measurement of high direct, alternating and surge voltages for general application in industrial testing and selected special examples found in basic research; analytical and numerical calculation of electrostatic fields in simple practical insulation systems; basic ionisation

Kuffel

1984-01-01

439

Introductory mining engineering  

SciTech Connect

Provides treatment of the applications of mining engineering while reinforcing material with analyses of special topics as well as numerical examples and problems. Initial chapters are devoted to fundamentals, explaining the four stages of mining - prospecting, exploration, development, exploitation - and the unit operations of mining. The text continues with coverage of surface mining and underground mining.

Hartman, H.

1987-01-01

440

Software engineering ethics  

NASA Technical Reports Server (NTRS)

Software engineering ethics is reviewed. The following subject areas are covered: lack of a system viewpoint; arrogance of PC DOS software vendors; violation od upward compatibility; internet worm; internet worm revisited; student cheating and company hiring interviews; computing practitioners and the commodity market; new projects and old programming languages; schedule and budget; and recent public domain comments.

Bown, Rodney L.

1991-01-01

441

Science & Engineering Indicators--1993.  

ERIC Educational Resources Information Center

This report provides policymakers in both the public and private sectors with a broad base of quantitative information about U.S. science and engineering (S&E) research and education and U.S. technology in a global context. Chapter 1, "Elementary and Secondary Science and Mathematics Education," discusses the student's achievement, interest,…

National Science Foundation, Washington, DC. National Science Board.

442

Educating todays engineering manager  

SciTech Connect

The issues addressed in this paper are: needed management skills/knowledge in concert with the definitions of management and leadership; suggested timing for behavioral management training, that is, undergraduate, graduate, or continuing education programs; and adequacy of management courses typically offered in traditional undergraduate/graduate engineering curricula.

Hurt, N.H. Jr.

1986-04-01

443

Small engine technology programs  

NASA Technical Reports Server (NTRS)

Described here is the small engine technology program being sponsored at the Lewis Research Center. Small gas turbine research is aimed at general aviation, commuter aircraft, rotorcraft, and cruise missile applications. The Rotary Engine program is aimed at supplying fuel flexible, fuel efficient technology to the general aviation industry, but also has applications to other missions. The Automotive Gas Turbine (AGT) and Heavy-Duty Diesel Transport Technology (HDTT) programs are sponsored by DOE. The Compound Cycle Engine program is sponsored by the Army. All of the programs are aimed towards highly efficient engine cycles, very efficient components, and the use of high temperature structural ceramics. This research tends to be generic in nature and has broad applications. The HDTT, rotary technology, and the compound cycle programs are all examining approaches to minimum heat rejection, or 'adiabatic' systems employing advanced materials. The AGT program is also directed towards ceramics application to gas turbine hot section components. Turbomachinery advances in the gas turbine programs will benefit advanced turbochargers and turbocompounders for the intermittent combustion systems, and the fundamental understandings and analytical codes developed in the research and technology programs will be directly applicable to the system projects.

Niedzwiecki, Richard W.

1990-01-01

444

Engine & Vehicle Mechanics Curriculum.  

ERIC Educational Resources Information Center

This competency-based curriculum includes all competencies a student will acquire in an engine and vehicle mechanics educational program. It follows guidelines established for automobile technician training programs leading toward certification and addresses requirements of the National Institute for Automotive Service Excellence (ASE). The…

Alaska State Dept. of Education, Juneau. Div. of Adult and Vocational Education.

445

Locomotive Engineer's Activity Diary.  

National Technical Information Service (NTIS)

The goal of this project is to understand both quantitatively and qualitatively how the work scheduling practices of the freight railroads affect the alertness and fitness for duty of train crews. Data were gathered from diaries kept by about 200 engineer...

J. K. Pollard

1996-01-01

446

Measuring Search Engine Quality  

Microsoft Academic Search

The effectiveness of twenty public search engines is evaluated using TREC-inspired methodsand a set of 54 queries taken from real Web search logs. The World Wide Web is taken as thetest collection and a combination of crawler and text retrieval system is evaluated. The enginesare compared on a range of measures derivable from binary relevance judgments of the firstseven live

David Hawking; Nick Craswell; Peter Bailey; Kathleen Griffiths

2001-01-01

447

Titanium in electronics engineering  

Microsoft Academic Search

The work deals with the structure and properties of titanium and its alloys subject to various external influences in accordance with the requirements to be met by materials used in electronics engineering. The text discusses the possibilities and prospects of using titanium, its alloys, and titanium-containing compounds as materials with specific electrical, thermal, magnetic and other important properties. Technological, operational,

B. K. Vulf; S. M. Borshchevskii

1975-01-01

448

Genetic Engineering & Xenotransplantation  

NSDL National Science Digital Library

The issue-focused, peer-reviewed article about xenotransplantation, or transplanting organs/tissues from other species to humans, offers hope to Type I diabetes sufferers because: insulin-producing tissue in animals (islets) has been isolated in tests, some human trials were successful with transplanted islets from human cadavers, and genetic engineering could create a 'super' islet that will survive after xenotransplantation.

Shane Grey (Garvan Institute of Medical Research, Sydney Australia;)

2000-05-01

449

Engineering pluripotent information systems  

Microsoft Academic Search

A pluripotent information system is an open and distributed information system that (i) automatically adapts at runtime to changing operating conditions, and (ii) satisfies both the requirements anticipated at development time, and those unanticipated before but relevant at runtime. Engineering pluripotency into an information system therefore responds to two recurring critical issues: (i) the need for adaptability given the uncertainty

Ivan J. Jureta; Stéphane Faulkner; Jean Vanderdonckt

2008-01-01

450

Engineering Annual Summary 1996  

SciTech Connect

Fiscal year 1996 has been a year of significant change for the Lawrence Livermore National Laboratory (LLNL) in general and for Engineering in particular. Among these changes, the Laboratory`s national security mission was better defined, the stockpile stewardship program objectives became crisper, LLNL`s investment in high-performance computing was re-emphasized with the procurement of a $100 million supercomputer for the Laboratory`s Accelerated Strategic Computing Initiative (ASCI) program, two major Laser programs (the National Ignition Facility and Atomic Vapor Laser Isotope Separation) expanded significantly, and DOE`s human genome efforts moved to the next phase of development. In the area of business operations, LLNL`s Cost Cutting Initiative Program (CCIP) was completed and the Laboratory restructured its workforce using a Voluntary Separation Incentive Program (VSIP). Engineering similarly also saw many technical and programmatic successes, as well as changes, starting with completion of its strategic plan, significant consolidation of its facilities, restructuring of its workforce, reduction of its overhead costs, substantial transfers of staff between programs, and finally my personal arrival at Livermore. This report is the first opportunity to capture some of Engineering`s FY96 activities and accomplishments in a succinct fashion, and to relate these to our strategic plan.

Dimolitsas, S.

1997-04-30

451

Biology using engineering tools  

PubMed Central

Negative feedback is a ubiquitous feature of biological networks. Recent work from Sturm and colleagues1 presents experimental evidence that biological negative feedback can serve the same function as it does for engineered systems: robustness to perturbations within the feedback loop. Such behavior has important implications for how to attack deregulated signaling networks containing negative feedback in diseases such as cancer.

Kolch, Walter

2011-01-01

452

Structural Web Search Engine  

Microsoft Academic Search

We present a new approach in web search engines. The web creates new challenges for information retrieval. The vast improvement in information access is not the only advantage resulting from the keyword search. Ad- ditionally, much potential exists for analyzing interests and relationships within the structure of the web. The creation of a hyperlink by the author of a web

Arash Rakhshan; Lawrence B. Holder; Diane J. Cook

2003-01-01

453

Nurturing Creative, Thinking Engineers  

ERIC Educational Resources Information Center

This paper describes some ideas and experiences with training student engineers in creativity and critical thinking. In our survey, a large majority (82%) of respondents felt that as compared to all other kind of academic engagements, their projects had contributed most to develop their creativity. About 50% had also felt that their projects were…

Goel, Sanjay

2011-01-01

454

First-Grade Engineers  

NSDL National Science Digital Library

Can students build a house that is cost effective and strong enough to survive strong winds, heavy rains, and earthquakes? First graders in Ms. Peter's classroom worked like engineers to answer this question. They participated in a design challenge that r

Peters, Kari N.; Bautista, Nazan U.

2010-03-01

455

Education as Engineering  

ERIC Educational Resources Information Center

John Dewey's short essay, "Education as engineering" was first published in 1922. It is followed here by four commentaries discussing the contemporary relevance of its argument that a science of education cannot advance education in the absence of pioneering developments on the ground of the schools.

Dewey, John

2009-01-01

456

Concurrent Engineering for Composites.  

National Technical Information Service (NTIS)

The Total Quality Design (TQD) approach serves as a facilitation tool for the coupled decision making that is necessary for composites. The approach serves as a means of enabling the concurrent engineering of composites through the use of a composites des...

D. J. Wilkins J. M. Henshaw V. M. Karbhari

1991-01-01

457

Engineering Students Abroad.  

ERIC Educational Resources Information Center

Describes the history of the Worcester Polytechnic Institute's study abroad program for engineering students, its unique approach, and the structure that led to its success. Discusses the history of the Global Perspective program, the project centers and programs, traditional exchanges, student participation and selection, program costs,…

Haddad, Marche R.

1997-01-01

458

Space Electronic Test Engineering  

NASA Technical Reports Server (NTRS)

The Space Power and Propulsion Test Engineering Branch at NASA Glenn Research center has the important duty of controlling electronic test engineering services. These services include test planning and early assessment of Space projects, management and/or technical support required to safely and effectively prepare the article and facility for testing, operation of test facilities, and validation/delivery of data to customer. The Space Electronic Test Engineering Branch is assigned electronic test engineering responsibility for the GRC Space Simulation, Microgravity, Cryogenic, and Combustion Test Facilities. While working with the Space Power and Propulsion Test Engineering Branch I am working on several different assignments. My primary assignment deals with an electrical hardware unit known as Sunny Boy. Sunny Boy is a DC load Bank that is designed for solar arrays in which it is used to convert DC power form the solar arrays into AC power at 60 hertz to pump back into the electricity grid. However, there are some researchers who decided that they would like to use the Sunny Boy unit in a space simulation as a DC load bank for a space shuttle or even the International Space Station hardware. In order to do so I must create a communication link between a computer and the Sunny Boy unit so that I can preset a few of the limits (such power, set & constant voltage levels) that Sunny Boy will need to operate using the applied DC load. Apart from this assignment I am also working on a hi-tech circuit that I need to have built at a researcher s request. This is a high voltage analog to digital circuit that will be used to record data from space ion propulsion rocket booster tests. The problem that makes building this circuit so difficult is that it contains high voltage we must find a way to lower the voltage signal before the data is transferred into the computer to be read. The solution to this problem was to transport the signal using infrared light which will lower the voltage signal down low enough so that it is harmless to a computer. Along with my involvement in the Space Power and Propulsion Test Engineering Branch, I am obligated to assist all other members of the branch in their work. This will help me to strengthen and extend my knowledge of Electrical Engineering.

Chambers, Rodney D.

2004-01-01

459

Composite coatings improve engines  

SciTech Connect

About 40% of the power loss in engine systems is attributed to the adverse effects of friction in reciprocating engine components. Over half of this power loss is caused by friction between pistons, piston rings, and cylinder bores. In addition, engine parts may be attacked by corrosive gasoline substitutes such as liquid propane gas and alcohol/gasoline mixtures. To solve both friction and corrosion problems, Nihon Parkerizing Co. has improved the nickel-phosphorus based ceramic composite (NCC) plating technology that was developed for cylinder bores and pistons by Suzuki Motor Co. in the mid 1970s. Iron and nickel-based composite plating technologies have been investigated since the early 1970s, and a few have been used on small two-stroke motorcycle, outboard marine, snowmobile, and some luxury passenger car engine components. Both nickel- and iron-base plating processes are used on cylinders and pistons because they offer excellent wear and corrosion resistance. Nickel-base films have higher corrosion resistance than those based on iron, and are capable of withstanding the corrosive conditions characteristic of high methanol fuels. Unfortunately, they experience a decrease in hardness as operating temperatures increase. However, NCC coatings with phosphorus additions have high hardness even under severe operating conditions, and hardness increases upon exposure to elevated temperatures. In addition to high hardness and corrosion resistance, NCC coatings provide a low friction coefficient, which contributes to the reduction of friction losses between sliding components. When used in low-quality or alcohol fuels, the corrosion resistance of NCC coatings is far higher than that of Fe-P plating. Additionally, the coatings reduce wall and piston temperature, wear of ring groove and skirt, and carbon deposit formation, and they improve output power and torque. These advantages all contribute to the development of light and efficient engines with better fuel mileage.

Funatani, K.; Kurosawa, K. (Nihon Parkerizing Co. Ltd., Nagoya (Japan))

1994-12-01

460

Engineering Workforce Project Report #1  

NSDL National Science Digital Library

Engineering degree programs in the United States have always been more geared to practice in the private sector than have most science degree programs. At the end of the 20th century, engineering practice was challenged by a proliferation of occupations requiring technical education; by rapidly changing technological advances; and by a perennial, if not heightened, concern with the relationship between engineering degree programs and occupational outcomes. This study illuminates the role of engineering education in ways not heretofore possible. It uses empirical data from a sample of 24,700 engineering graduates to provide information needed by people engaged in engineering education and engineering practice. These include employers who strive to build and retain highly qualified staffs, engineering school faculty who design course and program content, and both potential and actual engineering graduates as they weigh their educational choices and career options. As of 1999, approximately 2.8 million people in the United States had an engineering degree at the baccalaureate level or above. Some of these engineering graduates - about 1.3 million of them - were employed as engineers. At the same time, nearly a million were applying their engineering knowledge and skills to solve problems in other technical areas or were engaged in a surprising variety of non-engineering careers. Many had chosen to acquire degrees in other fields, opening new career paths or expanding their abilities to contribute to the engineering specialties in which they were working. This study provides a close look at the available data on how engineering graduates have chosen to structure their formal education and how their formal education relates to their employment. Target Audience: 2-4 Year College Faculty/Administrators, Engineers, Industry Personnel, Government Personnel, General Public

Parker, Linda

2009-11-19

461

Experience Engineering: An Engineering Course for Non-Majors  

ERIC Educational Resources Information Center

The engineering profession continues to struggle to attract new talent, in part because it is not well understood by the general public and often viewed in a negative light. Therefore, engineering professionals have called for new approaches promote better understanding and change negative perceptions. One suggested approach is for engineering

Hargrove-Leak, Sirena

2012-01-01

462

Software Engineering Laboratory Series: Collected Software Engineering Papers. Volume 13  

NASA Technical Reports Server (NTRS)

The Software Engineering Laboratory (SEL) is an organization sponsored by NASA/GSFC and created to investigate the effectiveness of software engineering technologies when applied to the development of application software. The activities, findings, and recommendations of the SEL are recorded in the Software Engineering Laboratory Series, a continuing series of reports that includes this document.

1995-01-01

463

Software Engineering Laboratory Series: Collected Software Engineering Papers. Volume 15  

NASA Technical Reports Server (NTRS)

The Software Engineering Laboratory (SEL) is an organization sponsored by NASA/GSFC and created to investigate the effectiveness of software engineering technologies when applied to the development of application software. The activities, findings, and recommendations of the SEL are recorded in the Software Engineering Laboratory Series, a continuing series of reports that includes this document.

1997-01-01

464

Materials Evaluation and Engineering, Inc.: Forensic Engineering Investigations  

NSDL National Science Digital Library

This website from Materials Evaluation and Engineering, Inc., which specializes in the analysis of product failures, points out that materials engineering is useful in product failure analysis because many products fail due to materials problems. The site provides a brief description of failure analysis, materials and product evaluations, mechanical failure investigations, forensic engineering, and corrosion failure investigations among others.

2008-04-03

465

Engineering Graphics/Pro-Engineer on the Web  

NSDL National Science Digital Library

This website, authored by Stephen W. Crown of the University of Texas-Pan American, is the 1999 recipient of Premier Award for Excellence in Engineering Education Courseware. It includes a course syllabus for an Engineering Graphics course, virtual world, lecture notes, games and quizzes, class photos, and pro-engineer tutorials.

Crown, Stephen W.

2009-07-24

466

The Engineer as a Manager. Engineering Manpower Bulletin Number 25.  

ERIC Educational Resources Information Center

Data regarding supervisory responsibility of engineers are analyzed and implications of these analyses are considered. The data indicated that a majority of engineers were employed as managers or supervisors. The data also indicated that those engineers with no supervisory responsibility declines from 38 percent in the 25-30 year old group to 12…

Alden, John D.

467

Research into the engineering application of reverse engineering technology  

Microsoft Academic Search

Based on previous research on reverse engineering (RE) technology, the engineering application of RE is explored in this paper. The application environment of RE is built with coordinate measurement machine (CMM) and CAD\\/CAM software. Taking a core die of the inlet of a diesel engine as an example, this paper describes the processes of RE, from object digitization, CAD model

Yu Zhang

2003-01-01

468

Engineering Faculty Attitudes to General Chemistry Courses in Engineering Curricula  

ERIC Educational Resources Information Center

A survey on the attitudes of engineering faculty to chemistry, physics, and mathematics was conducted with the aim of clarifying the attitudes of engineering faculty to chemistry courses in relation to engineering education or curricula and assessing their expectations. The results confirm that on the whole chemistry is perceived as having a…

Garip, Mehmet; Erdil, Erzat; Bilsel, Ayhan

2006-01-01

469

Software Engineering Laboratory Series: Collected Software Engineering Papers. Volume 14  

NASA Technical Reports Server (NTRS)

The Software Engineering Laboratory (SEL) is an organization sponsored by NASA/GSFC and created to investigate the effectiveness of software engineering technologies when applied to the development of application software. The activities, findings, and recommendations of the SEL are recorded in the Software Engineering Laboratory Series, a continuing series of reports that includes this document.

1996-01-01

470

What Do Engineers Want? Examining Engineering Education through Bloom's Taxonomy  

ERIC Educational Resources Information Center

Using Bloom's taxonomy as the basis for an empirical investigation, this paper examines what engineering students and professionals want from engineering education. Fifty engineering students, from Computer Science and Information Technology courses, were asked to rank activity verbs in order of their impression about frequency of their occurrence…

Goel, Sanjay; Sharda, Nalin

2004-01-01

471

23 CFR 1.11 - Engineering services.  

Code of Federal Regulations, 2010 CFR

...GENERAL § 1.11 Engineering services. (a) Federal participation. Costs of engineering services performed...the extent that such costs are directly attributable... (b) Governmental engineering organizations....

2010-04-01

472

23 CFR 1.11 - Engineering services.  

Code of Federal Regulations, 2010 CFR

...GENERAL § 1.11 Engineering services. (a) Federal participation. Costs of engineering services performed...the extent that such costs are directly attributable... (b) Governmental engineering organizations....

2009-04-01

473

Science and Engineering State Profiles: Fall 1997  

NSF Publications Database

... and Engineering State Profiles: 1997 Hypertext Format Science and Engineering State Profiles ... Format (.pdf) Science and Engineering State Profiles This report is available in hypertext (.htm ...

474

Engineering Support / Corrosion Prevention and Control Evaluation.  

National Technical Information Service (NTIS)

AIRCRAFT CORROSION: Corrosion Prevention and Control Evaluation * 3D Mapping * Pressure Washing. ENGINEERING SUPPORT: Maintenance Engineering Calls * Maintenance Engineering Order * Corrosion Prevention Techniques * ACE/Corrosion website.

D. R. Duran

2009-01-01

475

Science and Engineering Degrees: 1966-2001  

NSF Publications Database

... Science and Engineering Degrees: 1966-2001 Detailed Statistical Tables Hypertext Format Science ... Engineering Degrees: 1966-2001 Portable Document Format (.pdf) Science and Engineering Degrees ...

476

AJ26 Rocket Engine Test  

NASA Video Gallery

Engineers at NASAâ??s John C. Stennis Space Center conducts the second in a series of verification tests on an Aerojet AJ26 engine that will power the first stage of the Orbital Sciences Corporatio...

477

Simpler valve for reciprocating engines  

NASA Technical Reports Server (NTRS)

Simpler design eliminating camshafts, cams, and mechanical springs should improve reliability of hydrazine powered reciprocating engines. Valve is expected to improve efficiency, and reduce weight of engines in range up to 50 horsepower.

Akkerman, J. W.

1978-01-01

478

NASA System Engineering Design Process.  

National Technical Information Service (NTIS)

This slide presentation reviews NASA's use of systems engineering for the complete life cycle of a project. Systems engineering is a methodical, disciplined approach for the design, realization, technical management, operations, and retirement of a system...

J. Roman

2011-01-01

479

Grid Compas Computers Engineering Evaluation.  

National Technical Information Service (NTIS)

This report gives details of an engineering evaluation made by Engineering Development Establishment (EDE) of two GRID Compass portable computer, one of which is Tempest certified. It is concluded that the units are suitable for field use provided they ar...

J. Muir

1987-01-01

480

A Course in... Biochemical Engineering.  

ERIC Educational Resources Information Center

Describes a chemical engineering course for senior undergraduates and first year graduate students in biochemical engineering. Discusses five experiments used in the course: aseptic techniques, dissolved oxygen measurement, oxygen uptake by yeast, continuous sterilization, and cultivation of microorganisms. (MVL)

Ng, Terry K-L.; And Others

1988-01-01

481

NASA Software Engineering Benchmarking Study.  

National Technical Information Service (NTIS)

To identify best practices for the improvement of software engineering on projects, NASA's Offices of Chief Engineer (OCE) and Safety and Mission Assurance (OSMA) formed a team led by Heather Rarick and Sally Godfrey to conduct this benchmarking study. Th...

H. L. Rarick J. C. Kelly J. M. Wifl R. T. Crumbley S. H. Godfrey

2013-01-01

482

Selected Readings in Genetic Engineering  

ERIC Educational Resources Information Center

Describes different sources of readings for understanding issues and concepts of genetic engineering. Broad categories of reading materials are: concerns about genetic engineering; its background; procedures; and social, ethical and legal issues. References are listed. (PS)

Mertens, Thomas R.; Robinson, Sandra K.

1973-01-01

483

Technical Writing for Software Engineers.  

National Technical Information Service (NTIS)

This module, which is directed specifically to software engineers, discusses the writing process in the context of software engineering. Its focus is on the basic problem-solving activities that underlie effective writing, many of which are similar to tho...

L. Levine L. H. Pesante S. B. Dunkle

1990-01-01

484

Pulsejet, Jet and Rocket Engines.  

National Technical Information Service (NTIS)

This book discusses the problems encountered in the theory, design and research of pulsejets, ramjets, and rocket engines; the basic consideration for the numerical analysis and development of these engines are given; a detailed analysis of the elementary...

S. Wojcicki

1967-01-01

485

ThermoData Engine Database  

National Institute of Standards and Technology Data Gateway

SRD 103 NIST ThermoData Engine Database (PC database for purchase)   ThermoData Engine is the first product fully implementing all major principles of the concept of dynamic data evaluation formulated at NIST/TRC.

486

Systems Engineering Capstone Marketplace Pilot.  

National Technical Information Service (NTIS)

The goal of this pilot project is to determine the feasibility of and requirements for a systems engineering capstone experience marketplace environment. We hope to increase the number of systems engineering capstone projects conducted at universities eac...

M. Ardis

2013-01-01

487

Handbook for Marine Geotechnical Engineering.  

National Technical Information Service (NTIS)

This handbook discusses the application of engineering techniques and scientific knowledge to the investigation of seafloor materials, their characteristics, and their response to foundation and mooring loads. Its primary thrust is with problems engineers...

B. Jung D. Thompson J. K. Rocker J. L. Briaud S. Lin

2011-01-01

488

PRODUCER GAS ENGINES- PROPONENT OF CLEAN ENERGY TECHNOLOGY  

Microsoft Academic Search

Biomass gasification is environmentally benign and holds large promise for the future. The research on producer gas engines commenced about a decade ago at Indian Institute of Science, Bangalore and today IISc and Cummins India Limited are partnering in developing and deploying producer gas engines. There are nearly 5 MWe power plants installed in the country and gained a cumulative

S Dasappa; G Sridhar; H V Sridhar; NKS Rajan; PJ Paul; A. Upasani

489

Company A, Corps of Engineers in the Mexican War.  

National Technical Information Service (NTIS)

Company A, Corps of Engineers, is the first permanent regular engineer company in the U.S. Army. Congress authorized the company on 15 May 1846, two days after declaring war on Mexico. The company organized at West Point, New York, deployed to Mexico and ...

S. R. Riese

1995-01-01

490

Tissue engineering in otorhinolaryngology.  

PubMed

Tissue engineering is a field of research with interdisciplinary cooperation between clinicians, cell biologists, and materials research scientists. Many medical specialties apply tissue engineering techniques for the development of artificial replacement tissue. Stages of development extend from basic research and preclinical studies to clinical application. Despite numerous established tissue replacement methods in otorhinolaryngology, head and neck surgery, tissue engineering techniques opens up new ways for cell and tissue repair in this medical field. Autologous cartilage still remains the gold standard in plastic reconstructive surgery of the nose and external ear. The limited amount of patient cartilage obtainable for reconstructive head and neck surgery have rendered cartilage one of the most important targets for tissue engineering in head and neck surgery. Although successful in vitro generation of bioartificial cartilage is possible today, these transplants are affected by resorption after implantation into the patient. Replacement of bone in the facial or cranial region may be necessary after tumor resections, traumas, inflammations or in cases of malformations. Tissue engineering of bone could combine the advantages of autologous bone grafts with a minimal requirement for second interventions. Three different approaches are currently available for treating bone defects with the aid of tissue engineering: (1) matrix-based therapy, (2) factor-based therapy, and (3) cell-based therapy. All three treatment strategies can be used either alone or in combination for reconstruction or regeneration of bone. The use of respiratory epithelium generated in vitro is mainly indicated in reconstructive surgery of the trachea and larynx. Bioartificial respiratory epithelium could be used for functionalizing tracheal prostheses as well as direct epithelial coverage for scar prophylaxis after laser surgery of shorter stenoses. Before clinical application animal experiments have to prove feasability and safety of the different experimental protocols. All diseases accompanied by permanently reduced salivation are possible treatment targets for tissue engineering. Radiogenic xerostomia after radiotherapy of malignant head and neck tumors is of particular importance here due to the high number of affected patients. The number of new diseases is estimated to be over 500,000 cases worldwide. Causal treatment options for radiation-induced salivary gland damage are not yet available; thus, various study groups are currently investigating whether cell therapy concepts can be developed with tissue engineering methods. Tissue engineering opens up new ways to generate vital and functional transplants. Various basic problems have still to be solved before clinically applying in vitro fabricated tissue. Only a fraction of all somatic organ-specific cell types can be grown in sufficient amounts in vitro. The inadequate in vitro oxygen and nutrition supply is another limiting factor for the fabrication of complex tissues or organ systems. Tissue survival is doubtful after implantation, if its supply is not ensured by a capillary network. PMID:14577908

Bücheler, M; Haisch, A

2003-09-01

491

Stirling Engine Controller  

NASA Technical Reports Server (NTRS)

Stirling technology is being developed to replace RTG s (Radioisotope Thermoelectric Generators), more specifically a stirling convertor, which is a stirling engine coupled to a linear alternator. Over the past three decades, the stirling engine has been designed to perform different functions. Stirling convertors have been designed to decrease fuel consumption in automobiles. They have also been designed for terrestrial and space applications. Currently NASA Glenn is using the convertor for space based applications. A stiring converter is a better means of power for deep space mission and "dusty" mission, like the Mars Rovers, than solar panels because it is not affected by dust. Spirit and Opportunity, two Mars rovers currently navigating the planet, are losing their ability to generate electricity because dust is collecting on their solar panels. Opportunity is losing more energy because its robotic arm has a heater with a switch that can not be turned off. The heater is not needed at night, but yet still runs. This generates a greater loss of electricity and in turn diminishes the performance of the rover. The stirling cycle has the potential to provide very efficient conversion of heat energy to electric a1 energy, more so than RTG's. The stirling engine converts the thermal energy produced by the decaying radioisotope to mechanical energy; the linear alternator converts this into electricity. convertor. Since the early 1990's tests have been performed to maximize the efficiency of the stirling converter. Many months, even years, are dedicated to preparing and performing tests. Currently, two stirling convertors #'s 13 and 14, which were developed by Stirling Technology Company, are on an extended operation test. As of June 7th, the two convertors reached 7,500 hours each of operation. Before the convertors could run unattended, many safety precautions had to be examined. So, special instrumentation and circuits were developed to detect off nominal conditions and also safely shutdown the engines. The test will last for a period of 8000 to 9000 hours. Other types of tests that have been performed are: performance mapping, controller development, launch environment, and vibration emissions testing. Currently, the thermo-mechanical system branch is housing a RG-350, a stirling convertor. The convertor was used in previous tests such as a Hall Thruster test, world s first integrated test of a dynamic power system with electric propulsion. Another test performed was to conclude if free piston stirling convertors can be synchronized for vibration balancing, with no thermodynamic or electrical connections and not cause both to shutdown if one failed. The ability to reduce vibration by synchronizing convertor operation but still be able to operate when one partner fails is pertinent in space and terrestrial applications. The convertor is now being brought back into operation and a controller is in the process of being developed. This convertor will be used as a testbed for new controllers. I worked with Mary Ellen Roth on the electric engineering aspects of the RG-350. My main goal was to enhance the data collection process. I worked on different aspects of the RG-350, with a main focus on the engine controller. I drew a schematic of the wire connections in the engine controller, using PCB Express, so that a plan could be devised to connect the power meter properly between the output of the engine and the engine controller. I measured the power using two different instruments: Valhalla Scientific power meter and Ohio Semitronics power measurement device. The convertor is connected to an Agilent 34970A Data Acquisition/Switch Unit, which allows the user to measure, record, and monitor voltage, current, frequency, and temperature. I assisted in preparing the Data Acquisition for general operation. I also helped test a panel of transducers, which will be placed in the rack that powers and monitors the convertor.

Blaze, Gina M.

2004-01-01

492

Solar-thermal engine testing  

NASA Astrophysics Data System (ADS)

A solar-thermal engine serves as a high-temperature solar-radiation absorber, heat exchanger, and rocket nozzle, collecting concentrated solar radiation into an absorber cavity and transferring this energy to a propellant as heat. Propellant gas can be heated to temperatures approaching 4,500 °F and expanded in a rocket nozzle, creating low thrust with a high specific impulse (Isp). The Shooting Star Experiment (SSE) solar-thermal engine is made of 100 percent chemically vapor deposited (CVD) rhenium. The engine ``module'' consists of an engine assembly, propellant feedline, engine support structure, thermal insulation, and instrumentation. Engine thermal performance tests consist of a series of high-temperature thermal cycles intended to characterize the propulsive performance of the engines and the thermal effectiveness of the engine support structure and insulation system. A silicone-carbide electrical resistance heater, placed inside the inner shell, substitutes for solar radiation and heats the engine. Although the preferred propellant is hydrogen, the propellant used in these tests is gaseous nitrogen. Because rhenium oxidizes at elevated temperatures, the tests are performed in a vacuum chamber. Test data will include transient and steady state temperatures on selected engine surfaces, propellant pressures and flow rates, and engine thrust levels. The engine propellant-feed system is designed to supply GN2 to the engine at a constant inlet pressure of 60 psia, producing a near-constant thrust of 1.0 lb. Gaseous hydrogen will be used in subsequent tests. The propellant flow rate decreases with increasing propellant temperature, while maintaining constant thrust, increasing engine Isp. In conjunction with analytical models of the heat exchanger, the temperature data will provide insight into the effectiveness of the insulation system, the structural support system, and the overall engine performance. These tests also provide experience on operational aspects of the engine and associated subsystems, and will include independent variation of both steady state heat-exchanger temperature prior to thrust operation and nitrogen inlet pressure (flow rate) during thrust operation. Although the Shooting Star engines were designed as thermal-storage engines to accommodate mission parameters, they are fully capable of operating as scalable, direct-gain engines. Tests are conducted in both operational modes. Engine thrust and propellant flow rate will be measured and thereby Isp. The objective of these tests is to investigate the effectiveness of the solar engine as a heat exchanger and a rocket. Of particular interest is the effectiveness of the support structure as a thermal insulator, the integrity of both the insulation system and the insulation containment system, the overall temperature distribution throughout the engine module, and the thermal power required to sustain steady state fluid temperatures at various flow rates. .

Tucker, Stephen; Salvail, Pat

2002-01-01

493

Authorising engineer's 'pivotal role' explained.  

PubMed

Graeme Dunn, engineer, Design and Engineering at Atkins, who serves as an Authorising Engineer (MGPS) for both NHS clients and healthcare providers throughout the UK, Ian Sandford, a medical gas consultant (associate) at Hulley Specialist Gas Services, a specialist division of consulting engineers Hulley and Kirkwood, and Alex Black, an experienced technical consultant and AE (MGPS), of Alex Black and Associates, examine how the AE (MGPS) role developed, and highlight what they describe as its "pivotal importance" today. PMID:21585141

Dunn, Graeme; Sandford, Ian; Black, Alex

2011-04-01

494

Integrating engineering with training simulation  

Microsoft Academic Search

The combination of engineering and training simulations in the B-1B Engineering Research Simulator (ERS) for the USAF Strategic Air Command is described. It is shown how clear and mutual benefits are derived from integrating cockpit engineering and crew training simulations. It is suggested that the best method of integration is the development of a government-owned joint engineering\\/training simulator (E\\/TS) early

William P. Marshak; B. D. Purvis; T. B. Green

1989-01-01

495

Liquid Rocket Engine Testing Overview  

NASA Technical Reports Server (NTRS)

Contents include the following: Objectives and motivation for testing. Technology, Research and Development Test and Evaluation (RDT&E), evolutionary. Representative Liquid Rocket Engine (LRE) test compaigns. Apollo, shuttle, Expandable Launch Vehicles (ELV) propulsion. Overview of test facilities for liquid rocket engines. Boost, upper stage (sea-level and altitude). Statistics (historical) of Liquid Rocket Engine Testing. LOX/LH, LOX/RP, other development. Test project enablers: engineering tools, operations, processes, infrastructure.

Rahman, Shamim

2005-01-01

496

IEEE-USA: Today's Engineer  

NSDL National Science Digital Library

IEEE-USA, a unit of the Institute of Electrical and Electronics Engineers, maintains this monthly Webzine to inform industry workers and professionals about issues relevant to their careers. Business trends, ethics, public policy, engineering performance, and management are just a few of the focus areas addressed in Today's Engineer. Reader polls provide insight into thoughts and values of engineers around the country. The Web site also keeps archives of both career and policy feature stories that date back to January 2001.

2002-01-01

497

TryEngineering: Play Games  

NSDL National Science Digital Library

This is a collection of 25+ online games designed to let students think like an engineer and make decisions that apply an understanding of concepts in physics and engineering. Games include varied topics, such as "Solar Car Racing", "Bionic Arm Design", "Design a Parachute", "Grid Computing", "Lever an Obelisk", "Destroy the Castle", "Build a Lifeboat", "Spacewalk Game" and more. This collection is part of TryEngineering.org, a website maintained by the Institute of Electrical and Electronics Engineers (IEEE).

2011-12-07

498

DANISH ENGINEERING EDUCATION HAS CHANGED  

Microsoft Academic Search

The Working Group on Curriculum Development of Société Européenne pour la Formation des Ingénieurs has recognized a need for more comprehensive presentations of European engineering education systems. This article describes the changes that Danish engineering education is undergoing. The titles civilingeniØr and diplomingeniØr are described, as are the institutions offering engineering education. Previously, there were two engineering societies in Denmark-now

Ian B; Flemming Krogh; Ole Vinther

2000-01-01

499

NASA Systems Engineering Handbook  

NASA Technical Reports Server (NTRS)

This handbook is intended to provide general guidance and information on systems engineering that will be useful to the NASA community. It provides a generic description of Systems Engineering (SE) as it should be applied throughout NASA. A goal of the handbook is to increase awareness and consistency across the Agency and advance the practice of SE. This handbook provides perspectives relevant to NASA and data particular to NASA. The coverage in this handbook is limited to general concepts and generic descriptions of processes, tools, and techniques. It provides information on systems engineering best practices and pitfalls to avoid. There are many Center-specific handbooks and directives as well as textbooks that can be consulted for in-depth tutorials. This handbook describes systems engineering as it should be applied to the development and implementation of large and small NASA programs and projects. NASA has defined different life cycles that specifically address the major project categories, or product lines, which are: Flight Systems and Ground Support (FS&GS), Research and Technology (R&T), Construction of Facilities (CoF), and Environmental Compliance and Restoration (ECR). The technical content of the handbook provides systems engineering best practices that should be incorporated into all NASA product lines. (Check the NASA On-Line Directives Information System (NODIS) electronic document library for applicable NASA directives on topics such as product lines.) For simplicity this handbook uses the FS&GS product line as an example. The specifics of FS&GS can be seen in the description of the life cycle and the details of the milestone reviews. Each product line will vary in these two areas; therefore, the reader should refer to the applicable NASA procedural requirements for the specific requirements for their life cycle and reviews. The engineering of NASA systems requires a systematic and disciplined set of processes that are applied recursively and iteratively for the design, development, operation, maintenance, and closeout of systems throughout the life cycle of the programs and projects.

2007-01-01

500

Search Engine Colossus: International Directory of Search Engines  

NSDL National Science Digital Library

Created by Bryan Strome, this metasite offers links to a large number of country- or region-specific search engines. The search engines are organized by country, with a link to the service, the language(s) it uses, its point of origin, and a short description when available. The number of search engines available under each heading can vary considerably, as would be expected. Search engines in eleven general categories, including Academic, Business, Medical, and Sports, are also listed. Users wishing to narrow their searches and/or utilize some lesser-known search engines will find this site a helpful starting point.

Strome, Bryan A.