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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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At least 397 records · Page 22

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NASA NTRS1967

High-frequency waves in a collisional plasma with magnetic field.

Electron-plasma oscillation damping in hot collisional plasma with external uniform magnetic field investigated using Fokker-Planck equation

MAGNETOPLASMA↗

NASA NTRS1967

Decay of high-frequency longitudinal phonons.

HF longitudinal phonon anharmonic decay at low temperatures

Klemens, P. G.↗

NASA NTRS1967

Static DC to sinusoidal AC inverter using techniques of high-frequency pulse-width modulation.

HF pulse width modulation applied to DC to sinusoidal AC inverter to provide LF sine wave output without LF transformer or filter

Babaa, I. M. H.↗

NASA NTRS1968

Gravitational radiation in the limit of high frequency. I - The linear approximation and geometrical optics.

WKB approximation HF gravitational wave solutions to general relativity vacuum Einstein equations with strong gravitational fields, discussing light waves analogy

Isaacson, R. A.↗

NASA NTRS1968

Gravitational radiation in the limit of high frequency. II - Nonlinear terms and the effective stress tensor.

HF vacuum gravitational field expansion, discussing nonlinear terms and effective stress tensor for gravitational waves localized energy

Isaacson, R. A.↗

NASA NTRS1968

High-frequency plate damping due to gas pumping in riveted joints.

HF plate vibration damping due to gas pumping in riveted joints, considering pressure dependence of viscosity

Maidanik, G.↗

NASA NTRS1967

The design and build of a gas bearing gyroscope possessing high ''g'' and sterilization capability and utilitzing a low power gas bearing spinmotor and high frequency pump quarterly progress report, 1 jul. - 30 sep. 1967

Explore the source record for details and available documents.

Erickson, G. J.↗

NASA NTRS1969

Computer simulation of high-frequency combustion instability and its supression

Program for simulation of gas motion illustrates the effects of some of the variables on the combustion chambers of liquid propellant rocket engines. The program is based on numerically integrating the laws of inviscid fluid dynamics by two-step Lax-Wendroff technique.

Bucher, R. E.↗

NASA NTRS1969

Normal mode representation of the high- frequency properties of an inhomogeneous plasma.

Normal mode representation of HF properties of inhomogeneous plasma, analyzing Vlasov equation for free oscillations under external driving field

Leavens, W. M.↗

NASA NTRS1969

Injector response to strong, high-frequency pressure oscillations.

Liquid propellant rocket injectors response to HF chamber pressure oscillations using one dimensional model

Clayton, R. M.↗

NASA NTRS1969

High-frequency magnetic fluctuations associated with the earth's bow shock.

Magnetic fluctuations in various frequency ranges, associated with earth bow shock, detected with search coil magnetometer on OGO 3

Holzer, R. E.↗

NASA NTRS1969

On the nature of the high-frequency cutoffs of type IV solar radio bursts.

Synchrotron radiation HF cut-off resulting from electrons with anisotropic pitch angle distribution for type IV solar radio bursts

Ramaty, R.↗

NASA NTRS1970

High-frequency wattage-to-voltage converter

Solid state device, which measures electric power over a wide frequency range, multiplies two electrical input signals to produce an output voltage that is proportional to their product. Quarter-square type of electronic analog multiplier is used.

Vrancik, J. E.↗

NASA NTRS1970

Very high frequency digital rangine system

Digital ranging system measures slant range /from 500 feet to 200 nautical miles/ and provides digital range readout during range tracking between any two airborne vehicles.

Sobel, S. E.↗

NASA NTRS1969