Comparison of small water-graphite nuclear rocket stages with chemical upper stages for unmanned missions
Small water-graphite nuclear rocket stages compared with chemical upper stages for use in unmanned spacecraft
Clark, M. R.↗
SEARCH · Search NASA
Results for “Unmanned spacecraft”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Self-synchronizing bi-orthogonal coded PCM telemetry system
Self-synchronizing, biorthogonal coded pulse code modulation telemetry system for communicating with unmanned spacecraft
Miller, W.↗
Solar-electric-propulsion systems for unmanned space missions.
Electric propulsion ion engine systems using solar power source for Mars and Jupiter exploratory unmanned spacecraft is adaptable to existing launch vehicles
Molitor, J. H.↗
Spaceborne memory organization - Appendices Interim report
Computational requirements and information storage devices for unmanned spacecraft in advanced planetary exploration, 1975 - 1985
Source record↗
The 25-ft space simulator at the Jet Propulsion Laboratory
Design of space simulator for environmental testing of unmanned spacecraft
Harrell, J. W.↗
Application of advanced materials to truss structures.
Lightly loaded truss structures fabricated from Be, Be-Al alloy and uniaxial B filament reinforced epoxy tubing for unmanned spacecraft applications
Davis, J. G., Jr.↗
Mineralogical investigations of Mars.
Martian surface minerological study of present state and past processes from rock analyses by unmanned spacecraft instruments to test planetary models
Oconnor, J. T.↗
Studies of nuclear light bulb start-up conditions and engine dynamics
Deep Space Network for two-way communications with unmanned spacecraft at planetary distances - Vol. 2
Bauer, H. E.↗
Photosensitive device to detect bearing deviation Patent
Photosensitive light source device for detecting unmanned spacecraft deviation from reference attitude
Acord, J. D.↗
Conceptual definition of a High Energy Astronomy Observatory
High Energy Astronomy Observatory for space X rays, gamma and cosmic rays research via unmanned spacecraft
Dailey, C. C.↗
Space Flight with Electric Propulsion
Development and characteristics of electric propulsion systems for manned and unmanned spacecraft
Source record↗
A study of first-day space malfunctions
Malfunctions and failures in first-day performance of 57 unmanned spacecraft
Timmins, A. R.↗
A History of the Deep Space Network from Inception to 1 January 1969
Design, development, and operation of communications system for command and control of unmanned spacecraft during exploration of deep space
Renzetti, N. A.↗
Remote sensor systems for unmanned planetary missions
Development, definition, and characteristics of remote sensors for unmanned spacecraft conducting planetary exploration
Source record↗
Limitations in thermal scale modeling
Thermal scale modeling limitations for radiation- conduction system of unmanned spacecraft, discussing material thermal properties, model dimensions, instrumentation effects and environment simulation
Macgregor, R. K.↗
A study of first day space malfunctions
Unmanned spacecraft first day failures, discussing launch environment, duration tests in simulated space and performance improvement
Heuser, R. E.↗
Subsystem radiation susceptibility analysis for deep-space missions
Scientific, unmanned spacecraft on mission to Jupiter and beyond will be subjected to nuclear radiation from the natural environment and onboard nuclear power sources which may be harmful to subsystems. This report postulates these environments and discusses practical considerations to ensure confidence that the spacecraft's materials and subsystems will withstand the effects of anticipated radiation. Degradation mechanisms are discussed.
West, W. S.↗
Guidance and navigation requirements for unmanned flyby and swingby missions to the outer planets. Volume 1: Summary report
Unmanned spacecraft missions to the outer planets are of current interest to planetary scientists, and are being studied for the post 1970 time period. Flyby, entry and orbiter missions are all being considered using both direct and planetary swingby trajectory modes. The navigation and guidance requirements for a variety of missions to the outer planets and comets including both the three and four planet Grand Tours, are summarized.
Source record↗