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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Electrical power control and conditioning subsystem for Manned Orbital Research Laboratory /MORL/, noting Brayton cycle, system optimization, alternator and frequency converter selection
Specific impulse, and propulsion system optimization with electrothermal thrustors
Parametric analysis and system optimization of nuclear reactor heated Brayton cycle space power plants, discussing turbomachinery performance and shielding weight factors
Active optical system for spaceborne telescopes - Control system optimization
User manual for COPTRAN /communication system optimization program translatory
Optimal system and mission planning for extended lunar orbital rendezvous mission
Optimal system with controlled sensitivity to parameter uncertainty
Planetary atmosphere composition determination using mass spectrometry for neutral components, ion spectrometry for ionic components and data system optimization
Computational algorithm for determining piecewise-constant feedback gains for linear system optimal control
Studies on display systems, optimal control methods, human performance theory, and neuromuscular models
Aircraft electrical power systems optimization
Lunar flying vehicle propulsion system optimization, discussing weight, performance, engine life, reliability, etc
Coherent digital communication systems optimal design based on unified theory, discussing tradeoffs between error rates, Doppler tracking capability and time and frequency division multiplexing
Saturn 5 launch vehicle control system optimal desensitization with feedback, using analog computer for sensitivity design
Unified hardware/software design for computer systems optimization
The proceedings of a conference on the Omega navigation system are presented. Three significant low frequency/very low frequency possibilities are considered as follows: (1) use of Worldwide (WW) Omega, (2) use of an Omega-like system optimized for aviation in the continental United States, (3) a mix use of WW Omega and Vor, U.S. Omega and VOR, and U.S./WW Omega. It is concluded that all possibilites can be tested with current plans for WW Omega.
Initial work indicates that a viable aircraft family can be designed for higher subsonic cruise speeds. Studies to date suggest that the propulsion system/nacelle design and the incorporation of noise attenuation into this design will have more influence on the choice of an optimum engine than engine weight and fuel consumption. These studies also suggest the payoff resulting from the incorporation of new technology items such as the internal engine generator and new structural cowl concepts because of the greater sensitivity to drag. These factors, plus the greater interdependency of the transonic aircraft and its propulsion system, point up the importance of a total system approach to propulsion system optimization and design.
The development and performance testing of a servoactuator device are discussed. The detailed information includes the following: (1) modification description, (2) test data to include analyses, test procedures, and test data, (3) conclusions, and (4) recommendations. Diagrams of the servoactuator and photographs of the test equipment are presented. Descriptions of optimized system configurations are developed.