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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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New aircraft, such as electric vertical take-off and landing vehicles, are being developed to support advanced air mobility. This talk will address gaps and risks in the aerospace supply chain and discuss how to identify and develop resiliency approaches.
Mission performance capabilities of ion engines powered by the 30 kw and 60 kw SNAP-8 power supplies are compared for the following missions: a 24-hr equatorial satellite, a 100 n mi lunar satellite, a 500 n mi Mars satellite, a Mercury probe, and an out-of-the-ecliptic probe. The capabilities of arc- jet engines and chemical engines for the same missions are compared with those of the ion engines. The majority of the comparisons are for 8500-lb spacecraft which are boosted into a 300 n mi orbit by the Atlas-Centaur. Variations in initial orbit altitude, the use of actual launch dates rather than dates based on simplifying assumptions, and the combined use of chemical and electrical propulsion systems were also evaluated in terms of their effect on mission performance.
Very lossy powdered iron material, in the lining of a polyester resin, replaces the dielectric material in the short coaxial transmission line of a simple filter. The lossy material absorbs microwave signals along high voltage power supply leads.
Ac power supply for use in an electron-bombardment ion rocket engine
Problem of supplying spacecrew with food of animal origin
Continuously variable load automatically tests dc power supplies over an extended current range. External meters monitor current and voltage, and multipliers at the outputs facilitate plotting the power curve of the unit.
Computer program for hydrostatic bearing - effects of nonuniform film thickness and lubricant supply
Oxygen supply of heart during respiration at excess pressure
Supply of trained personnel for engineering and science
AC to DC power supply using high frequency transistor circuit techniques for size reduction by which conversion, filtering and regulation may be combined
Modular porous plate sublimators, provided for each location where heat must be dissipated, conserve the battery power of a space vehicle by eliminating the coolant pump. The sublimator requires only a water supply for coolant.
Solar-array, storage battery power supply system for Relay I spacecraft
Profiles for lunar supply missions involving electric propulsion
High-pressure-reducing and flow-stabilization system delivers analytical gas samples from a gas supply. The system employs parallel capillary restrictors for pressure reduction and downstream throttling valves for flow control. It is used in conjunction with a sampling valve and minimizes alterations of the sampled gas.
Circuit with Metal Oxide Semiconductor Field Effect Transistor /MOSFET/ as the voltage reference, provides a high degree of power supply voltage regulation and temperature compensation.
Gas supply system for hermetically sealed platforms applicable to Saturn V instrument unit
Rapid-response monitoring circuit detects voltage decrease or dropout in any single phase or all three phases simultaneously of a 3-phase 60 Hz computer power supply. It uses lamps to indicate voltage conditions and provides a digital pulse output for a chronological record of voltage irregularities.
Distillation apparatus in the form of a U tube supplies small amounts of pure cesium vapor at constant pressure to a thermionic converter. The upstream leg of the U tube is connected to a vacuum pump to withdraw noncondensable impurities, the bottom portion serves as a reservoir for the liquid cesium.