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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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Hydrogen fire detection system discovers fires by detecting the flickering ultraviolet radiation emitted by the OH molecule, a short-lived intermediate combustion product found in hydrogen-air flames. In a space application, the system discriminates against false signals from sunlight and rocket engine exhaust plume radiation.
Delayed vent valve system in a mechanical backing pump in a vacuum system allows the pneumatic foreline valve to seal before the pump vent opens. The system is designed to be fail-safe and operate even though there is loss of electrical power.
Rectilinear accelerometer operates from an ac source with a phase-sensitive ac voltage output proportional to the applied accelerations. The unit includes an independent circuit for self-test which provides a sensor output simulating an acceleration applied to the sensitive axis of the accelerometer.
Electric contact switching of low level current and voltage
Plant feeding by air culture method for closed system
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Sporadic E layer electron density from rocket probing
Absorption lines of quasi-stellar object 3C 191
Dynamics of baryon-meson systems in 27-fold representation, obtaining self-consistent bound state and low lying resonant solutions with Balazs method
Horizontal jitter in the video presentation in television systems is prevented by using an additional sync level. This circuitry uses simultaneous signals at both sync and porch frequencies, providing a sync identification from which a coincidence circuit can generate pulses having the required stability and noise immunity.
Consumption multichannel pulse height analyzer performs balloon and rocket investigations of solar neutrons with energies greater than 10 MeV. The lightweight unit can operate in a temperature range of minus 30 degrees to plus 70 degrees C and withstand storage temperatures from minus 50 degrees to plus 90 degrees C.
Anatomical structure of vestibular sensory organ system
On-line computer use for extended continuous period in time sharing system
Long-period librations of Trojan planetary orbits in rotating three-body coordinate system
Lunar landing research facility - simulation technique, research vehicle, gantry and bridge crane, control room, data recording, test operations, and system test results
Computer program documentation of engineering analysis, decoding, program listing, input and output data display sheets, and computations
Effects of cohesion and adhesion forces on fluid motion under weightlessness
Coincidences in measured positions of absorption lines in spectra of quasi-stellar objects