High-Performance Turboalternator and Associated Hardware. 2 - Design of Gas Bearings
Design and performance of gas bearing system for turboalternators
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Design and performance of gas bearing system for turboalternators
Design and performance of Brayton cycle compressor
Ranking and selection of insulation systems to define minimum practical design density for Modular Nuclear Vehicle applications
Thermal protection systems and components for modular nuclear vehicle
Application of steepest descent method to trajectory optimization and aircraft performance problems
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Minimizing drag and increasing performance of optimum shapes at hypersonic flight
Multilayer insulation panels for cryogenic liquid containers
Multilayer insulation systems for cryogenics protection aboard spacecraft, considering mechanical properties, radiation shielding, component evacuation rate and outgassing
Design and performance testing of arterial wick circular heat pipes for OAO-C spacecraft
Multilayer insulation systems development and selection for cryogenics thermal protection on space vehicles, considering mechanical properties, radiation shielding, components, evacuation rate and outgassing
Spray foam insulation for Saturn S-2 stage, consisting of phenolic honeycomb core composite purged with helium
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Explore the source record for details and available documents.
Mylar diaphragms in shock tubes are a major improvement over steel diaphragms. Other improvements include: better electrode design; improved flow by opening the throat and removing all constrictions; and improved driver geometry by optimizing volume and shape.
Results of a test program designed to determine the effects of 100 temperature and compressive loading cycles on several multilayer insulation materials and composites. A total of four reflector materials, four separator materials, eight face-sheet systems, and one fastener material were subjected to 100 temperature cycles from -320 to 400 or 650 F. Generic types of materials studied included Mylar, Kapton, Dacron, Nomex, and Beta Glass. The temperature cycling was followed by visual inspection, metal adhesion tests on the reflectors, and tensile tests of the face sheets, fastener, and separators. A total of six composites were subjected to compressive cycles between zero and 0.15 psi, and density changes were measured. Application of the experimental results to the shuttle orbiter is discussed.
MOS/silicon-on-sapphire (SOS) technology is shown to permit the realization of large-scale integrated arrays that combine the best features of monolithic bipolar and MOS technologies. The perfect isolation and reduced capacitance of SOS technology make possible static MOS circuits with nearly an order-of-magnitude improvement in speed and dynamic power dissipation over their monolithic counterparts. CMOS/SOS memory arrays have been fabricated with speeds comparable to TTL bipolar memory arrays even when operated at TTL compatible levels. Quiescent power dissipation of two described arrays is typically less than 1 microwatt/bit. The SOS/MOS technology is compatible with both aluminum and self-aligned silicon-gate processing.
Several potential valve closures for the space shuttle auxiliary propulsion system (SS/APS) were investigated analytically and experimentally in a modeling program. The most promising of these were analyzed and experimentally evaluated in a full-size functional valve test fixture of novel design. The engineering investigations conducted for both model and scale evaluations of the SS/APS valve closures and functional valve fixture are described. Preliminary designs, laboratory tests, and overall valve test fixture designs are presented, and a final recommended flightweight SS/APS valve design is presented.