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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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Sensor requirements for spaceborne navigation, guidance, and control system for unmanned lunar landing vehicle
Unmanned automated biological laboratory for investigations of extraterrestrial life on Mars
Apollo/Saturn I unmanned space flight to test command module ablative heat shield
Associative memory applications in unmanned space vehicles
Telemetry signals from Mariner IV after completion of Mars mission
History of Mariner space program and discussion of future unmanned vehicles for exploration of interplanetary space
Voyager program of unmanned scientific exploration of planets, discussing Flyby, Orbiter, Capsule and Lander missions
Unmanned planetary probe and lander capsule design, emphasizing Mars lander capsules
An experimental investigation of a spherically blunted 100° cone and two tension shell configurations with varying nose-bluntness ratios for use in unmanned entry into low -density planetary atmospheres has been conducted by the National Aeronautics and Space Administration at Mach numbers from 0.30 to 1.20 and at angles of attack from approximately O° to 40°. The results show that the models were longitudinally stable, with centers of pressure located rearward of the base at all test conditions. The tension shell configurations exhibited substantially higher axial-force coefficients than the 100° cone although the variation of axial-force coefficient with Mach number at zero angle of attack was similar for all configurations. An increase in tension shell body length resulted in a reduction of the axial-force coefficients and a more forward center-of-pressure location. Variation in nose bluntness had no significant effect on the longitudinal aerodynamic characteristics of the tension shell configurations.
Aerothermoelastic effects on unmanned entry vehicles for Mars
Minimal energy ballistic trajectories for manned and unmanned space flights to Mercury
Reasons, targets, and map for scientific analysis of lunar surface and geology by unmanned probes
Payload capability of unmanned interplanetary probes using solar electric propulsion
Solar cells and thermoelectric generators for scientific exploration of solar system
LEM optical astronomy package /OAP/ containing astronomical telescope, spectrophotometer, data processing subsystem and other devices, for unmanned landing and life support
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles presented with equations that couple injection, midcourse and terminal phases
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles presented with equations that couple injection, midcourse and terminal phases
Multipurpose orbital bus-vehicle for alternate missions