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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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Simple, stable and reliable transistor DC FEEDBACK voltage amplifier employing differential input stage coupled with single common emitter stage for gain and drift rate dependence on temperature
Two-transistor multivibrator has minimum power dissipation and maximum reliability. It minimizes the use of components that are subject to environmental changes or other unpredictable behavior.
Intermediate rotating ring improves the reliability of dynamic shaft seals whose rubbing surfaces wear down rapidly at high shaft speeds. The rotating ring is placed between the rotating shaft sealing surfaces and the stationary surface, and driven at one-half the shaft speed.
Brazing process employs an aluminum-silicon filler alloy for diffusion bonding of aluminum parts in a vacuum or inert gas atmosphere. This process is carried out at temperatures substantially below those required in conventional process and produces bonds of greater strength and reliability.
Limit switch for reliable, low-travel, snap action with negligible arcing uses an electrically nonconductive permanent magnet consisting of a ferrimagnetic ceramic and ferromagnetic pole shoes which form a magnetic and electrically conductive circuit with a ferrous-metal armature.
Plastic /polycarbonate/ insulator improves thermocouple reliability in test operations. The insulator is molded in half sections, assembled mechanically and eliminates electrical shorting.
Electrical properties of high reliability computer grade miniature capacitors
Reliable miniature spaceborne memory system design, and testing of breadboard version of circuits and memory plane
Geodetic satellite command, telemetry, clock, and memory subsystems reliability evaluation
Decision theory application to GEOS A spacecraft operational reliability assessment
Electronic components reliability in nuclear radiation environmental test
Reliability versus accuracy tradeoff analysis for spacecraft earth sensor
Specifications for reliable infrared earth sensor in satellite attitude control system
Laboratory tests on complete systems for reliability of Earth satellites, noting effect of time and thermal level on problem detection, comparison of space problems with simulated space problems, etc
Integrated mission simulation technique tests pilot reliability for seven-day manned lunar mission
Dissimilar metals are reliably joined by diffusion bonding when the surfaces are electroplated with silver. The process involves cleaning and etching, anodization, silver striking, and silver plating with a conventional plating bath. It minimizes the formation of detrimental intermetallic phases and provides greater tolerance of processing parameters.
Syringe meters small volumes of fluid used in chemical analysis. The standard body and plunger are adapted to fit with a motor driven micrometer, making a reliable and convenient device.
C-shaped PTFE /polytetrafluorethylene/ seal ring provides a reliable seal in cryogenic fluids over a fluid pressure range of 0 to 2000 psig. It is interference-fitted internally with a metal expander ring and a metal compressor ring.