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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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Accessible regions method for delineating generalized low thrust trajectory energy requirements and payload capabilities of vehicle systems for exploration of solar system
Comparison of modulation techniques for multiple access synchronous satellite voice communications
Computer memory access commutator and steering gate configuration produces bipolar current pulses while still employing only the diodes and magnetic cores of the classic commutator, thereby appreciably reducing the complexity of the memory assembly.
Managanese bismuthide films are used in the development of a random access memory device of high packing density and nondestructive readout capability. Memory entry is by Curie point switching using a laser beam. Readout is accomplished by microoptical or micromagnetic scanning.
Multiple access techniques for communications satellites - digital modulation, time division multiplexing, and related signal processing
Codes for multiple-access communication satellite systems using time-frequency multiplexing
Analog modulation, frequency-division multiplexing and signal processing for multiple-access satellite communication
Accessibility of solar system regions to earth launched spacecraft using Jupiter gravity- assisted trajectories
Multiple access communication utilizing small ground stations for satellite communication modulation - multiplexing techniques
Mission analysis procedure for determining approximate lunar areas of accessibility for mission planning
XY relay switching matrix provides complete random access and random release of 400 points. A mercury-wetted bistable relay with independent set and reset coils is the unique feature associated with each point.
Synchronization equipment for time division multiple access system for medium altitude satellite and small ground stations
Time division access system for satellite communications, and figure of merit for effects of bit and frequency synchronization
Time Division Multiple Access /TDMA/ system for satellite communication with ground station system
Unpowered orbital transfer and flight paths, discussing accessibility elliptical boundary and minimum energy trajectories
Spacecraft assembly and maintenance accessibility, discussing impact of manufacturing on design
Doppler compensation for maintaining signal synchronization of time division multiple access
Multiple access satellite relay system for low data rate users