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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 1,117 records · Page 62

All sources NASA NTRS DOE OSTI

NASA NTRS1968

External cavity coupling and phase locking of gallium arsenide injection lasers.

Gallium arsenide injection lasers, discussing external cavity coupling, phase locking, laser uniformity, dimensions and arrays

Ahearn, W. E.↗

NASA NTRS1968

The coupled equation approach to the numerical solution of the biharmonic equation by finite differences. I.

Coupled equation approach to finite difference solution of biharmonic equation, noting outer iteration scheme for pair of discrete Poisson equations

Smith, J.↗

NASA NTRS1968

Effect of edge restraint coupling on buckling of ring-supported cylinders.

Edge restraint coupling effect on buckling mode of ring stiffened shells of revolution

Anderson, M. S.↗

NASA NTRS1968

Temperature-dependent hyperfine coupling constants of Mn super 2 super plus in fluorides.

Hyperfine coupling constants of positive divalent Mn ion in calcium and barium fluorides, measuring temperature dependence by analyzing electron spin resonance spectrum

Gigante, J.↗

NASA NTRS1968

Wave coupling across a shock wave in a fully ionized gas.

Coupling between electron-acoustic, ion-acoustic and electromagnetic plane waves across shock wave front in fully ionized two fluid inviscid gas plasma

Francis, S. H.↗

NASA NTRS1968

Computational procedure for the close-coupled rotational excitation problem - Scattering of diatomic molecules by atoms.

Computational procedure for cross sections evaluation for close coupled rotational excitation of diatomic molecules using atom-diatomic molecule scattering theory

Bernstein, R. B.↗

NASA NTRS1968

Theoretical necessity of a positive value for the Brans-Dicke coupling constant omega.

Proof of necessity of positive value for Brans-Dicke coupling constant

Noerdlinger, P. D.↗

NASA NTRS1967

Human performance in a cross-coupled tracking system.

Human performance in cross-coupled compensatory tracking task

TASK COMPLEXITY↗

NASA NTRS1969

Computer program analyzes whirl critical speeds and bearing loads for shafts coupled by nonlinear springs to machine housing

Computerized method of analysis predicts bearing loads, shaft deflections, and critical speeds for shafts coupled by rolling contact bearings to the machine housing. The bearing nonlinearities, casing as well as rotor dynamics, and rotor-imbalance forcing functions are all included in the system dynamics analysis.

Severud, L. K.↗

NASA NTRS1969

Magnetically coupled emission regulator

Magnetic coupling between input and power handling circuits isolates high voltage. A feedback regulator samples the ion source bias current and provides deviation signals to a magnetic amplifier pulse modulator. The pulse modulator controls the dc to ac power inverter which in turn, controls the emission current.

Source record↗

NASA NTRS1969

Segmented SiGe-PbTe couples

New design of segmented couples incorporates an intermediate junction contacted by pressure, and eliminates transition members that bond materials differing in thermal expansion. Development of a reproducible and reliable intermediate junction between PbTe and SiGe will be applicable to direct conversion of energy.

Eggers, P. E.↗

NASA NTRS1969