An ever increasing number of actuation functions historically performed by hydraulics or pneumatics are being accomplished by electric actuation. ...
NASA Website
This document contains the proceedings of the NASA Electrical Actuation Technology Bridging (ELA-TB)
NASA Technical Reports Server (NTRS)
The program demonstrated the feasibility of an electropneumatic actuator which can be used in manufacturing applications. The electropneumatic actuator, an alternative to the electric, hydraulic, and pneumatic actuators used in industry, consists of an el...
National Technical Information Service (NTIS)
Electric actuators are being considered for the primary flight control surfaces on a Joint Strike Fighter candidate as well. ...
... Accession Number : ADA263835. Title : An Explosively Actuated Electrical Switch Using Kapton Insulation,. Corporate Author ...
DTIC Science & Technology
A bracket for an electrical servo actuator is disclosed which was developed particularly for jet engine fuel control values. Said servo actuator is mounted on a support arm which is allowed to pivot on a bolt through a fixed mounting bracket. The actuator...
... ELECTRIC IGNITERS, ELECTRIC PRIMERS, EXPLOSIVE ACTUATORS ... GAS GENERATING SYSTEMS, RELIABILITY, ROCKET IGNITERS ...
... Title : ISOTOPE SOURCES OF ELECTRICAL ENERGY FOR POWERING AUTOMATIC ... The heat actuates a pile consisting of a series of ...
... The mechanical actuator also includes an electrically activated fluid control valve ... to a rotary-vaned hydraulic actuator wherein the shaft thereof is ...
... Abstract : The fault-tolerant actuation system uses 4 active electrical control paths to control a dualized hydraulic actuator. ...
... off capability and very short opening time. The switch operates on the principle of an ... Descriptors : *Patents, *Electric switches, *Explosive actuators ...
... 13. Abstract : An electro-hydraulic (EH) actuator for converting electrical inputs into hydraulic output signals is described. ...
... ROBOTS, THESES, MODEL TESTS, ELECTRICAL RESISTANCE, ACTUATORS, ANALOG TO DIGITAL CONVERTERS, SURGERY, ...
... the transporting vehicle causes the ... ELECTRIC CHARGE, ELECTRIC CURRENT, GASES, PATENT APPLICATIONS, PRESSURE, PULSES ...
The shim scram type of actuator in use on Project 100 and Project 101 has a latch mechanism which provides the scram feature of this actuator. Actuators now in operation in Idaho use electrical power to actuate the latch. One of the design considerations that was necessary to convert ...
Energy Citations Database
Objective: Ensure electrically powered actuators are not a limiting factor in more-electric-aircraft designs. Assess reliability ...
Sep 18, 2009 ... PROPOSAL TITLE: Lightweight High Efficiency Electric Motors and Actuators for ... efficiency over the state of practice components/systems. ...
... during SBIR AF98-175, "Integrated Electric Actuator Application to Flight ... more reliable, and more cost-effective vehicle control systems. ...
Page 1. MAO Yrw CHARACTERIZATION AND ,I�D.FLING ... To alleviate such uncertainty, an alternative loading approach using a powder actuated ...
A valve operating mechanism is described for an internal combustion engine comprising of a piezo-electric actuating device arranged to drive an engine valve opening directly into a combustion chamber by the expansion of the piezo-electric actuating device such that expansion of the ...
... magnet and coil assembly, operatively ... MIRRORS, ASSEMBLY, COILS, DETECTORS, ELECTRICAL PROPERTIES, ELECTRONICS ...
... (Author). Descriptors : *Patent applications, *Electric batteries, *Electric switches, Fail safe, Short circuits, Cells, Vents. Subject ...
... on the planar coil and conductor ... ACTUATORS, POWER LEVELS, COILS, THIN FILMS ... ELECTRICAL EQUIPMENT, ELECTRIC MOTORS, DIRECT ...
... Title : The Advent of Electric Clamping. ... Abstract : Part/tool clamping can be manually actuated or can use pnuematic or hydraulic power. ...
The system monitors the electrical and mechanical health of solenoids by comparing the electrical current profile of each solenoid actuation to a typical ...
closed-loop control of a structure is that the electrical power of piezoelectric actuators is dependent on the mechanical motion of the structure and the electrical ...
... operational warfare, joint planning, national and international ... family of AC electric drives permitting ... actuating mechanisms with blower-type change ...
This paper focuses on actuating mode shapes of cellulose-based electro-active paper (EAPap) in order to investigate its suitability as actuators. Firstly, actuating mechanism of EAPap is addressed based on intrinsic characteristics of cellulose structures under electric fields. EAPap actuator ...
NASA Astrophysics Data System (ADS)
The main shaft is supported in acetal bushings. .... actuator electrical leads passed were made of a glass-filled plastic resin that was found to be ...
Page 1. Nodal Design of Actuators and Sensors (NODAS) Technical Report Jan E. Vandemeer Department of Electrical and Computer Engineering ...
Dec 21, 1998 ... Actuators are devices which drive the movements of aircraft flight control surfaces such as ailerons, elevators, stabilators and rudders. ...
Sep 3, 2010 ... While the proposed project focuses on building lightweight, high-performance carbon electric motors and actuators from Carbon Nanotube (CNT) ...
Sep 16, 2010 ... While the proposed project focuses on building lightweight, high-performance carbon electric motors and actuators from Carbon Nanotube (CNT) ...
Sep 18, 2009 ... The motors and actuators developed in this effort will be ideal for rovers ( drive train, suspension and steering), cranes, instruments, ...
Aug 6, 2010... Core drill sample Break-off actuators, Antenna Mast and Solar array ... or hydraulic actuators are required for high output forces. ...
An electromechanical actuator is described for producing mechanical force and/or motion in response to electrical signals. The actuator includes a ferromagnetic fluid and a coil which are contained within an elastomeric capsule. Energization of the coil b...
The thin film NEMS fabricated in such a way may be used in various nano-electro- mechanical devices, artificial muscles, electrical actuators, thin film ...
... Title : Application Actuation Trade Study. ... Different mission/air vehicles will have to be studied ... between hydraulic and all-electric applications, with a ...
electro-hydrostatic actuator uses an electric motor to ..... shock). " Voltage power transients (28 V dc and 270 V dc). " Vibration (resonance, sinusoidal and ...
optimization of electrically driven Recurve actuators. The drive circuit is based on a half- bridge switching. Optimization results show clear interrelations between the design of the electric circuit and the actuator conservative formulation. The structural model is coupled to the electric ...
E-print Network
The development of more electric technologies for future military aircraft promises to provide significant redundancy reliability maintainability, and performance benefits. Advanced Cooling For High Power Electric Actuators particularly address the use of...
The development of more electric technologies for future military aircraft promises to provide significant redundancy, reliability, maintainability, and performance benefits. Advanced Cooling For High Power Electric Actuators particularly address the use ...
Pyrotechnic actuators use hollow cylindrical ceramic or plastic charge holders to electrically isolate the pyrotechnic charge from the actuator case. In a newly developed actuator, 30% glass fiber filled polyetheretherketone (PEEK) was selected as the cha...
Aug 6, 2010... steering and drive actuators, Core drill sample Break-off actuators, ... or hydraulic actuators are required for high output forces. ...
This report summarizes the work performed on the 68 HP electro-mechanical actuator (EMA) system developed on NASA contract for the Electrical Actuation (ELA) Technology Bridging Program. The system was designed to demonstrate the capability of large, high...
This report contains the results of The Airplane Actuation Trade Study program. The study, conducted in three phases, included establishment of actuation requirements; design of two airplanes (a baseline airplane and an all-electric airplane); and a trade...
The objective of this study is to realize high-speed electrical discharge machining (EDM) using a wide-bandwidth, high-precision, millimeter-stroke, 5-DOF controlled maglev local actuator. In this paper, we report on the EDM of 1mm diameter holes using the maglev local actuator, and discuss the relationships between machining speed, ...
HIGHLY-COMPACT SMA ACTUATORS A Feasibility Study of Fuel-Powered and Thermoelectric SMA Actuators 1. Objectives The main goal of this project is to perform a feasibility study on Fuel-Powered and Thermoelectric and electric systems. The objectives for the Thermoelectric Compact SMA Actuator (TEC-SMA) are given as
Abdominal retractors that are fixed to the operating table provide an electrical pathway to earth and are unsafe. Modifications to ensure the electrical safety of two table mounted abdominal retractors by the incorporation of insulators are described. Results of electrical testing show that the ...
PubMed
Plasma actuators operating in atmospheric air can induce a body force through collisions between electrically charged particles and neutral air molecules by an externally applied electric field. The fast response and the simple structure make the plasma actuator a promising option in aerospace applications. In this ...
This paper is concerned with measuring experimentally the stroke, generated mechanical power and efficiency of a flapping wing micro air vehicle's piezoelectric actuators when the forces transmitted to the actuator by a thorax are modeled with a nonlinear damping component. The objective is to test, simulate and model the actuators' ...
We present a method for optimization of the location of the induced-strain actuator for acoustic response synthesis, based on the impedance technique. A dynamic model that couples the actuator impedance, the host structure impedance and the acoustic impedance is developed and then utilized to determine the optimal location of the ...
Actuators are transducers that convert an electrical signal to a desired physical quantity. Active flow control actuators modify a flow by providing an electronically controllable disturbance. The field of active flow control has witnessed explosive growth in the variety of actuators, which is a testament to both ...
This paper studies the nonlinear vibration of a clamped-clamped microresonator under combined electric and piezoelectric actuations. The electric actuation is induced by applying an AC-DC voltage between the microbeam and the electrode plate that lies on opposite sides of the microbeam, and the piezoelectric ...
... Japan)-filled syringe system of the piezo electric actuator (Model PMM 150 FU; Prime Tech, Ibaraki, Japan) ... used extensively in biomedical research. The piezo electric actuator has been used as a tool ...
NBII National Biological Information Infrastructure
A self actuated joint to impart a direct or inverse circular planar trajectory to a spacecraft payload (1 to 10 kg) without any electric motion actuators was designed. The continuous motion of the discharge spring is converted to the motion of a swivel de...
For use in an engine speed governor for an engine having a throttle moveable between an open throttle position and a close throttle position for regulating the flow of fuel to the engine, the governor described is of the type comprising an overriding throttle closing means, a control means responsive to engine speed for controlling the throttle closing means, a linear actuator ...
... FLIGHT SIMULATORS, CONTAMINATION, MULTIPLEXING, ANALOG TO ... NOISE(ELECTRICAL AND ELECTROMAGNETIC), HYDRAULIC FLUIDS ...
... Descriptors : *ELECTRICAL CONDUCTIVITY, *SOLID ... HIGH RATE, MANUFACTURING, PROPULSION SYSTEMS ... ACTUATORS, SOLAR PANELS ...
... The functional mockup of the Vanguard electrical system is nearing iVR No. ... Present mockup tests are being conducted with the reworked actuator. ...
... DISTRIBUTION: Approved for public release; distribution is unlimited. ... the grid generator. ... actuators enables the use of electric power to ...
... the vapor directly, Ti challenge stream is then ... the concentration for the purge and product streams. ... direction valves and the electric actuators for the ...
... CHIPS(ELECTRONICS), ENERGY CONSUMPTION, THERMOELECTRICITY, ACTUATION, CHANNELS, POWER, LOSSES, ELECTRIC POWER ...
pair of electrical coils being provided in the initiator hns- ing which, upon actuation, .... ignition or detonation of primer mix 47 with subsequent ...
... military vehicle having an electric horn actuator ... be installed in existing vehicles in a ... Descriptors : *Patent applications, *Military vehicles, *Acoustic ...
... it is necessary to evaluate and understand the material response, energy flow and actuation ... materials, the electrical energy stored inside changed. ...
Jet Propulsion Laboratory, California Institute of Technology, .... was performed by exciting the piezoelectric stack with electric field at the resonance ...
... (Author). Descriptors : *AIRCRAFT EQUIPMENT, *CIRCUIT BREAKERS, *THERMAL SWITCHES, AIRBORNE, ELECTRICAL EQUIPMENT ...
... been explored and shown to offer unusually attractive possibilities for the control of piezoelectric, elastic and electric impedance characteristics and ...
... basic investigation of the operation of propellant actuated devices (PAD) in ... such as viewing ports and mechanical and electrical feed-throughs, all ...
Mar 8, 2007 ... Each aerosurface is driven by a hydraulic actuator controlled by a redundant set of electrically driven valves (ports). ...
... circuits, brakes; 17) independent installation; 18) independent Installa- tion with direct-current generator actuated by -24 Page 33. ...
This paper describes plasma treatments that improve the actuation properties by modifying the surface morphology of ionic polymer metal composites (IPMC). The proposed Cl2 and SF6 plasmas change the surface appearance of the electroactive polymer, and scanning electron microscopy (SEM) of the plasma-treated surfaces reveals the development of round and cone-shaped ...
This hydraulically-actuated operating system comprises a cylinder, a piston movable therein in an opening direction to open a circuit breaker, and an accumulator for supplying pressurized liquid to a breaker-opening piston-actuating space within the cylinder. A normally-closed valve between the accumulator and the actuating space is ...
DOEpatents
An apparatus for monitoring the pressure in a well bore is described, comprising: source means located at the surface electrically connected to the power cable for superimposing a sensing signal on the power cable; an electrical network means located in the well bore electrically connected to the power cable for providing an ...
