Propellant expulsion in unmanned spacecraft
Mechanical positive expulsion devices for earth- storable liquid rocket propellants in unmanned spacecraft
UNMANNED SPACECRAFT↗
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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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Thermal testing of unmanned lunar and interplanetary spacecraft
Thermal testing of unmanned lunar and interplanetary spacecraft
LUNAR SPACECRAFT↗
Exploration of interplanetary space by unmanned vehicles.
History of Mariner space program and discussion of future unmanned vehicles for exploration of interplanetary space
MARINER SPACE PROBE↗
Flight operations of an unmanned planetary mission.
Ground system design, data processing, digital command and digital-human interface in flight operations problems for unmanned spacecraft on planetary exploration mission
DIGITAL COMMAND SYSTEM↗
Some considerations in establishing the feasibility of data compression in unmanned spacecraft.
Data compression feasibility for data transmission from unmanned spacecraft in deep space
DEEP SPACE INSTRUMENTATION FACILITY /DSIF/↗
Transonic aerodynamic investigation of tension shell and blunted 100 deg conical shapes for unmanned entry vehicles
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.
TRANSONIC SPEED↗
Aerothermoelastic effects on unmanned entry vehicles for Mars Final engineering report
Aerothermoelastic effects on unmanned entry vehicles for Mars
ATMOSPHERIC ENTRY↗
Minimal energy ballistic trajectories for manned and unmanned missions to Mercury
Minimal energy ballistic trajectories for manned and unmanned space flights to Mercury
MANNED SPACE FLIGHT↗
The scientific utility of unmanned lunar surface analysis probes
Reasons, targets, and map for scientific analysis of lunar surface and geology by unmanned probes
UNMANNED SPACECRAFT↗
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles.
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles presented with equations that couple injection, midcourse and terminal phases
SOFT LANDING↗
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles.
Propellant requirements for unmanned lunar and interplanetary soft landing vehicles presented with equations that couple injection, midcourse and terminal phases
SOFT LANDING↗
Nonmetallic materials for unmanned spacecraft.
Nonmetallic materials for unmanned spacecraft
MATERIAL TESTING↗
Propulsive-phase guidance for unmanned landing on Mars - A two-part study.
Guidance system requirements for unmanned Martian propulsive landing capsule
SPACECRAFT LANDING↗
Reflection coefficients of planetary surfaces from unmanned spacecraft.
Radar type instrument for measuring reflection coefficients of planetary surfaces from unmanned spacecraft
RADAR MEASUREMENT↗
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
FLYBY MISSION↗
Application of the Saturn V launch vehicle to unmanned scientific exploration of the planet Jupiter.
Saturn V launch vehicle and Apollo spacecraft hardware systems applied to unmanned exploration of Jupiter
APOLLO SPACECRAFT↗
Association of a manned space station and an unmanned observatory.
Manned orbiting space station operation in association with unmanned observatory, comparing gimbal mounted, free floating, tethered and firmly fixed modes
OAO↗
Using Unmanned Aerial Vehicles and GPS Receivers
It is proposed that a small fleet of unmanned aerial vehicles (UAVs) be used over a period of years to monitor the rise of pressure surfaces caused by the hypothesized rise in average temperature of the troposphere due to global warming. Global Positioning Satellite System (GPS) receivers would be used for the precise tracking required.
global warming UAV unmanned aerial vehicles GPS↗