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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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Rotating solid rocket control system - test stand study of vehicle upper stage, and comparison with analog studies
Liapunov direct method applied to design of controllers for class of nonlinear time-varying processes
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Cathodes of display tubes wired in parallel achieve input switching simplification of a Nixie tube display system. Use of time- shared logic energizes the appropriate anode and inhibits all unnecessary cathodes.
Valve assembly simultaneously starts or stops the flow of oxidizer and fuel from separate inlet channels to reaction control motors. The assembly combines an oxidizer shutoff valve and a fuel shutoff valve which are mechanically linked and operated by a single high-speed solenoid actuator.
Gemini-Agena docking using fixed base visual simulator with closed circuit television system
Polarized radar waves used for determining local statistical electromagnetic backscattering properties of lunar or other planetary surface
Mass spectrometer using photoionization for ion production
Magnetic-sector mass spectrometer for Mars atmosphere analysis
Two-stage radiant cooler for infrared detector in day-night high resolution radiometer on Nimbus- type spacecraft
Theoretical calculations of time constants, view factor, and cone and gold surface emissivities for radiant cooler of infrared detector
Axially loaded cylindrical structures analyzed for optimum weight construction consistent with cost constraint, emphasizing beryllium-aluminum alloys
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Video display system for a scanning electron microscope provides slow scanning rates, a self-generated color gradient technique, and allows leisurely viewing of several hours. It also enables the viewing of areas where selected energy regions contribute relatively few electrons, and the changing of specimen position and magnification without adjustments.
New frequency divider circuit can be synchronized over a wider input control frequency range, has greater phase stability, and is less sensitive to temperature changes than conventional synchronized oscillators. The new circuit uses the avalanche breakdown mode of operation of transistors.
Design, fabrication, and life test of ion engine system using oxide cathode mercury electron bombardment thrustor
Fabrication, testing, and implementation of metal oxide field effect transistors in Anchored Interplanetary Monitoring Platform D and E telemetry encoder
Evaluation of method for calculating thermal conductivities of metals