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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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Low-profile terminal board is used in dense electronic circuits where mounting and working space is limited. The board has a thin layer of pressure-sensitive adhesive backing which eliminates the need for mounting screws.
Stability and control of variable sweep wing configuration with outboard wing panels swept back 75 degrees at Mach 2.01
Mylar lip type back-up ring installed in combination with three rubber O-rings seal the junctions between a tube stub and an adapter during high pressure gas flow at cryogenic to room temperatures. Mylar seals should not be used with oxygen under pressure or in the liquid state.
Design, construction, and evaluation of crossed slot cavity backed antenna
Human compensatory responses to effects on EEG AND work capacity caused by back-chest accelerations
Turbopump disk life increased by thin, relatively rigid metal backing ring installed to the honeycomb seal. The aerodynamic and friction damping provided by this modification eliminates first-stage disk cracking.
Indirect high impact test of cavity-backed spiral antenna
Piggy-back method of packaging integrated circuits will increase packaging density and design flexibility. It will also eliminate interconnection leads between the die and associated inductances, and thus increase the attainable frequency response of the circuit.
Analysis and design of elliptically polarized, cavity backed crossed-slot antenna
Back flow from jet plumes in vacuum, determining particle density at surrounding points forward of jet nozzle in vacuum due to gas exhausted
Performance tests of wind tunnel model inlet for bleed system back pressure and porous area effect of axisymmetric compression
Plastic backing films removal from carbon electron microscope replicas by maintaining specimens in horizontal position
VHF cavity backed cylindrical gap antenna input tuning impedance and equatorial radiation patterns controlled by cavity adjustments
Plasma covered cavity-backed slot antenna investigation
Segmented back-up bar for butt welding large tubular structures such as rocket booster bodies or tanks
Back reflection of zero-mass scalar or vector waves in gravitational fields produced by non- Lorentz part of spatial metric components
Several new types of back surface field (BSF) cells were designed and fabricated. These include boron and phosphorus diffused BSF cells, single crystal epitaxially grown BSF cells and chemically vapor deposited (CVD) polycrystalline BSF cells. Boron diffusion yielded 10 ohm-cm BSF cells with 0.6 volt open-circuit voltages and collection efficiencies equal to those previously reported for aluminum alloying. The epitaxially grown cells also exhibited high open-circuit voltages and collection efficiencies and may be more radiation damage resistant. The polycrystalline cells had very high internal series resistance. No direct relationship was found to exist between collection efficiency and open-circuit voltage, V sub oc in BSF cells. Results indicate that the V sub oc effect is not caused simply by the mechanism of blocking of minority carriers.