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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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Comparison of IR Mars spectrograms with laboratory and solar spectra of terrestrial rocks and minerals, using same equipment
Dynamic comparison calibrator to determine frequency response of high-range pressure tranducers
Simulator and flight test comparison of pilot performance to determine flight simulator requirements
Atmospheric density and temperature measurements using Explorer XVII satellite and comparison with satellite drag-determined densities
Data comparisons and photographic observations of coaxial isothermal turbulent mixing of dissimilar gases at nearly equal stream velocities
Stress distribution in flat stiffened panel under axial load - comparison of analytical solutions with experimental data
Comparison of effectiveness of antimotion sickness drugs tested in human centrifuge
Local buffeting response comparison between actual Apollo boiler plate service module and aeroelastic wind tunnel model - structural vibrations
Comparison of vestibular effects in man in several rotating environments - head movement, canal stimulation, and nystagmus
Comparison of cortical thickness and radiographic microdensitometer measurements in determining bone loss
Comparisons are made of experimental and theoretical zero-lift wave drag for several nose shapes, wing-body combinations, and models of current airplanes at Mach numbers up to 1.0. The experimental data were obtained from tests in the Ames 6- by6-foot supersonic wind tunnel and at the NACA Wallops Island facility. The theoretical drag was found by use of linear theory utilizing model area distributions. The agreement between theoretical and experimental zero-lift wave-drag coefficients was generally very good, especially for a fuselage or for fuselage-wing combinations that were vertically symmetrical. For other models that had rapid changes in body shape and/or were not vertically symmetrical, the agreement of theory with experiment ranged from fair to poor, depending on the severity of the change in shape.
Comparison of hydrogen maser and of cesium beam tube frequency standard
Fracture mechanics and notch analysis comparison
Surface temperature calculations for Venus based on two Greenhouse atmospheric model comparisons
Comparison of solar cell damage by alpha particles and protons
Anemometer comparison using mean wind velocity and wind velocity variation measurements
Comparison of control-fixed stability derivatives for two supersonic fighters as determined from flight and wind tunnel tests
Formulation of direct and adjoint methods of trajectory injection error in vector matrix notation and comparison