... A CHARRING ABLATION THERMAL PROTECTION SYSTEM ... AN ANALYSIS OF A CHARRING ABLATION THERMAL PROTECTION SYSTEM ...

A computer tool to perform entry vehicle ablative thermal protection systems sizing has been developed. Two options for calculating the thermal response are incorporated into the tool. One, an industry-standard, high-fidelity ablation and thermal response...

Nitroaromatic amine-based intumescent coatings were improved with regard to their thermal protection

Aug 6, 2010 ... SUBTOPIC TITLE: Ablative Thermal Protection Systems. PROPOSAL TITLE: Phenolic Impregnated Carbon Ablator (PICA) Gap Filler for Heat Shield ...

This thesis discusses the thermal and mechanical properties of subliming, melting, charring, and intumescent ablative materials. The use of intumescent ablators as thermal protection in low heat flux environments is emphasized. Models for analysis of tran...

... ablation phenomena is essential to the optimal design of thermal protection systems for various operations in ultra high-temperature environments. ...

Nov 24, 2008 ... The potential exists to develop a hybrid ablator/insulator thermal protection ... launch system solid rocket motors, nanosatellite launch systems, ...

... carbonization ablative material with low-temperature decomposition. ... cooling effects. During heating, low-temperature carbonization ...

Sep 3, 2010 ... SUBTOPIC TITLE: Ablative Thermal Protection Systems ... materials for thermal protection system (TPS) segments and heat shield assemblies. ...

A study is conducted to find a new interior thermal-protection material that possesses good thermal-protection performance and simple manufacturing possibilities. Quartz powder and Cr2O3 are investigated using epoxy resin as a binder and Al2O3 as the burning inhibitor. Results indicate that the developed thermal-protection coating is ...

In summary, advantages of the ablative thermal protection system (TPS) for aerobrakes are: (1) proven reliable TPS systems; (2) well characterized (thermally) with good, existing thermal analysis capability; (3) good candidate materials are available; (4)...

... EPDM Grafoil seal, Viton Thermal-protection materials , ... 9 TI1. EPDM AND VITON ABLATION CHARACTERISTICS ..... Ii ...

Sep 16, 2010 ... SUBTOPIC TITLE: Ablative Thermal Protection Systems ... The sensors will be fabricated using a high precision Direct Write (DW) process based upon thermal spray, ... heat flux, and surface or coating degradation. ...

A serious complication for any thermal radiofrequency ablation is thermal injury to adjacent structures, particularly the bowel, which can result in additional major surgery or death. Several methods using air, gas, fluid, or thermometry to protect adjacent structures from thermal injury have ...

A serious complication for any thermal radiofrequency ablation is thermal injury to adjacent structures, particularly the bowel, which can result in additional major surgery or death. Several methods using air, gas, fluid, or thermometry to protect adjacent structures from thermal injury have ...

... Abstract : PBI syntactic foam composites and PBI-carbon cloth laminates have been produced for evaluation as ablative thermal protection systems ...

Sep 18, 2009 ... SUBTOPIC TITLE: Ablative Thermal Protection Systems. PROPOSAL TITLE: Recovery of In-Space Cubesat Experiments (RICE) ...

Only temperature measurements using the sheathed thermocouple probes are reported in this paper; a comparison of the sheathed thermocouple and the bare ...

It is covered with a thermal protection system composed of a cork/silicone super light ablator material that originated with the Viking landers of the 1970s ...

Sep 3, 2010 ... PROPOSAL TITLE: Graded Density Carbon Bonded Carbon Fiber (CBCF) Preforms for Lightweight Ablative Thermal Protection Systems (TPS) ...

Sep 16, 2010 ... PROPOSAL TITLE: Graded Density Carbon Bonded Carbon Fiber (CBCF) Preforms for Lightweight Ablative Thermal Protection Systems (TPS) ...

4 days ago ... Along with the ablative heat shield, thermal protection during reentry was provided by thin Rene 41 radiative shingles at the base of the ...

Aug 1, 2011 ... Along with the ablative heat shield, thermal protection during reentry was provided by thin Rene 41 radiative shingles at the base of the ...

Free flight investigations with solid fuel rocket propelled vehicle systems where thermal protection

Nov 19, 2008 ... It is covered with a thermal protection system composed of a cork/silicone super light ablator material that originated with the Viking ...

Reentry heat transfer analysis was performed on the windward wall structures of a generic composite Crew Exploration Vehicle (CEV) capsule, seen in figure 1, protected by the Apollo thermal protection system (TPS) (ablative material). The Apollo low Earth...

Sep 3, 2010 ... NASA SBIR 2010 Solicitation ... SUBTOPIC TITLE: Ablative Thermal Protection Systems ... NASA has a need for integrated vehicle health management capabilities for a number of space structures and systems, for which this ...

USBI and NASA have been testing and investigating the use of high pressure water for coating removal for approximately the past 12 years at the Automated TPS (Thermal Protection System - ablative materials used for thermal protection during ascent and des...

The Lightweight Nonmetallic Thermal Protection Materials Technology (LNTPMT) program studied a number of ceramic matrix composites, ablator materials, and tile materials for durability in simulated space environment. Materials that indicated low atomic ox...

This paper presents a thermal p-version multidimensional finite element for ablative materials which can be applied to the simple thermal structural analysis of an atmospheric re-entry vehicle's ablative thermal protection system. The element is integrated into the element ...

This report is a comprehensive presentation of the inter-disciplinary subject of materials ablation, particularly as it relates to thermally protective plastics and composites. It treats in detail many aspects of plastic ablation, such as materials requirements, historical development, unique materials advantages ...

The Orion Thermal Protection System (TPS) ADP was a 3 1/2 year effort to develop ablative TPS materials for the Orion crew capsule. The ADP was motivated by the lack of available ablative TPS's. The TPS ADP pursued a competitive phased development strateg...

Carbon fibers are widely used in ablative and thermal insulating applications because of their low conductivity, dimensional stability and strength at very high temperaturtes, flexibility, low cost and nonmelting characteristics. For over two decades, the...

... HEAT RESISTANT PLASTICS, *ABLATION), (*REINFORCED PLASTICS, ABLATION), (*THERMOGRAVIMETRIC ANALYSIS, HEAT RESISTANT ...

... AND ABLATION PROGRAM (CMA) FOR CARBON ABLATION ANALYSIS C. CH AN DTIC LECTE ... I AND ABLATION PROGRAM (CMA) FOR ...

Phenolic Impregnated Carbon Ablator was the heatshield material for the Stardust probe and is also a

In order to illustrate that the finite element method is a viable technique in solving ablation type thermal problems, a 1-dimensional ablation and thermal ...

Ablation of self-assembled monolayer protected gold nanoparticle films on polyimide was explored using a nanosecond laser. When the nanoparticle film was ablated and subsequently thermally sintered to a continuous film, the elevated rim structure by the expulsion of molten pool could be avoided and the ...

Applications for polyaromatic and polyheterocyclic resins and their reinforced composites include ablative thermal protection, coatings, radomes, and structures. The response of these materials in high temperature service environments was predicted by kin...

Transient thermal analysis and structural analysis for synthesis of ablating thermostructural panels

... Descriptors : *REENTRY VEHICLES, *ABLATION, DENSITY, TEMPERATURE, PERMEABILITY, DEGRADATION, ENERGY, GASES, THERMAL ...

... ANALYSIS, COMPUTER PROGRAMS, ABLATION, ATMOSPHERE ENTRY ... Subject Categories : RADIOFREQUENCY WAVE PROPAGATION ...

Although bowel injury is a rare complication of renal radiofrequency ablation, the potential consequences can be devastating. Therefore, it is prudent to perform bowel displacement/protection procedures when feasible. The main bowel displacement techniques include hydrodissection, gas-insufflation, balloon interposition, and electrode torquing. In this ...

The development of thermal protection structures for ESA's reentry vehicles is discussed. Special attention is given to the basic design options; the materials, including ceramic matrix composites, metallic alloys, external ablators, and external and internal insulations; thermal-protection challenges specific for ...

A hypersonic vehicle is designed to fly at high Mach number in the earth`s atmosphere that will result in higher aerodynamic heating loads on specific areas of the vehicle. A thermal protection system is required for these areas that may exceed the operating temperature limit of structural materials. This paper delineates the application of ...

... ABLATION, MASS SPECTRA, THERMOGRAVIMETRIC ANALYSIS, DIFFERENTIAL THERMAL ANALYSIS, DEGRADATION, THERMAL STABILITY. ...

... Title : Modifications to the Aerotherm Charring Material Thermal Response and Ablation Program (CMA) for Carbon Ablation Analysis. ...

... Descriptors : *Plastics, *Silicon compounds, *Thermal insulation, *Thermal degradation, Chemical reactions, Thermoplastic resins, Ablative ...

... Accession Number : ADD425673. Title : Ablative Char Characterization for Thermal Conductivity Measurements,. Corporate Author : ...

... Accession Number : AD0668623. Title : ABLATION AND THERMAL EFFECTS IN A VISCOELASTIC CYLINDER. Descriptive Note : Technical rept.,. ...

... Accession Number : AD0670535. Title : A MASS-THERMAL METHOD FOR STUDYING ABLATIVE POLYMER DEGRADATION MECHANISMS,. ...

The 'Stardust' heat shield, composed of a PICA (Phenolic Impregnated Carbon Ablator) Thermal Protection System (TPS), bonded to a composite aeroshell, contains important features which chronicle its time in space as well as re-entry. To guide the further ...

... and pyrolysis gas flow of thermal protection system materials. ... test is phenolic impregnated carbon ablator with an LI-2200 insulator as backup material . .... The findings indicated that the short-term corrosion resistance of the ...

However, the chemical vapor deposition/ infiltration techniques used to fabricate the Cf/SiC-based CMC facesheet proved expensive and time-consuming. ...

Saturday, 13 August 2011 ... maneuvers, tethered operations, parking of the Agena target vehicle and demonstrate an automatic reentry. .... Along with the ablative heat shield, thermal protection during reentry was provided by thin Rene 41 ...

... for high heating rates above 500 Btu/ft2-sec; and 2) filled-silicone ablators for heating rates that can be as high as approximately 500 Btu/ft2-sec. ...

Thermal Analysis Tricks & Tips. Analysis Notes and Questions. Notes on Simulating Ablation in a PATRAN P/Thermal model. Notes on Simulating Ablation in a ...

Ablative heat protection prediction of material response and environmental factors for ground- based

... Title : ABLATION OF ICE AND SNOW - PROTECTIVE COVERINGS AND GENERAL CRITERIA FOR APPLICATION. Descriptive Note : Final rept. ...