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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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Computation of optimal interplanetary low thrust trajectories, orbital transfer problems by means of generalized Newton-Raphson method
Damping and mass stiffness discontinuity effects on dynamic stability of free-free beam under gimballed pulsating end thrust
Dynamic stability of bending vibrations of uniform free-free beam under end thrust with application to rocket vehicles
Perturbation technique used for approximate solutions to nonlinear hydromagnetic equations of cold collisionless plasma
Orbital distributions of meteors detected during radio survey in Southern Hemisphere
Micro-volumetric quantities of ejected liquid are made to produce equal volumetric displacements of a more dense material. Weight measurements are obtained on the displaced heavier liquid and used to calculate volumes based upon the known density of the heavy medium.
Circuit includes a single-word input/output register and a multiword serial memory which are circulated in synchronism. It puts out data at a rate compatible with relatively slow-speed electromechanical devices.
Human chest X ray analysis during prolonged acceleration
Human body dynamic response to vibration combined with linear acceleration, noting changes in body mechanical impedance and resonance
Gravity wave conribution to atmospheric wind motion at 100 km
Rotational velocity estimates by observers during angular acceleration, noting vestibular function interpretation
Data interpretation, discussing correlation describing effectiveness of independent variable and table giving values directly from sample size, t, z, F and chi square values
Celestial navigation system using photodetectors, comparing numbers and brightness of S4, S20 and silicon stars
Computer photokymographic recording of gravitational-inertial force environment effects on cardiovascular and respiratory systems on centrifuge
Hot-wire anemometer measurements of incompressible fluid flow direction and velocity in pipes
Linear coastal hydrostatic boundary layers of lake with no horizontal motion, discussing flow conditions under wind stress and interior velocity
The objective grating technique is discussed. From the investigation of actual material, it is established that the effect of coma varies significantly from plate to plate, also that a model linear in diameter and/or coordinate may be inadequate for its removal, and even introduce systematic errors. From this standpoint, the requirements of reference star systems are discussed.
Comparison between theoretical colors calculated from model atmospheres and ultraviolet celescope observations of supergiant star atmospheres show that most stars are deficient in ultraviolet flux relative to theoretical models. It is concluded that not enough line blocking has been included in model atmospheres.