Pulse generating circuit employing switch means on ends of delay line for alternately charging and discharging same Patent
Pulse generating circuit for operation at very high duty cycles and repetition rates
Taddeo, F. V.↗
SEARCH · Engineering Papers
Results for “mean”
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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Manned Vehicle Systems Analysis by Means of Modern Control Theory
Optimal control theory and systems analysis of man machine systems and operator performance prediction model for compensatory tracking tasks are discussed.
Baron, S.↗
Precision rectifier with FET switching means Patent
Precision full wave rectifier circuit for rectifying incoming electrical signals having positive or negative polarity with only positive output signals
Deboo, G. J.↗
A study of space contamination by means of the surface plasma resonance effect in grating diffraction
Surface plasma resonance effect in diffraction gratings and relation of effect to space contamination by spacecraft instruments
Cowan, J. J.↗
Determination of mean operating life and shelf life for the radiation survey meter and personal radiation dosimeter battery packs
Service and shelf life tests of radiation survey meter and personal radiation dosimeter battery packs used on Apollo spacecraft
Source record↗
The physical meaning of phase coefficients
Asteroid surface properties determined by photometric measurements of phase curve between 10 and 30 deg
Veverka, J.↗
Noise reduction by means of variable-geometry inlet guide vanes in a cascade apparatus
Noise reduction studies involving variable geometry inlet guide vanes for choking using two-sector cascade apparatus with three inlet configurations
Chestnutt, D.↗
Doppler radar measurements of mean wind variations in the clear atmosphere
CAT wind structure and velocity dynamics, using Doppler radar techniques
Dobson, E. B.↗
Evaluation of otolith organ function by means of ocular counter-rolling measurements
Ocular counter-rolling as otolith organ function indicator
Miller, E. F., II↗
Comparison of the mean photospheric magnetic field and the interplanetary magnetic field
Photospheric and interplanetary magnetic field polarity and magnitude comparison, using Explorer observations
Colburn, D. S.↗
A method of mapping Jupiter's gravitational potential by means of a proposed orbiting spacecraft
Jupiter gravitational potential mapping for Grand Tours spacecraft, discussing Jovian satellites effect on orbit and trajectory perturbations
Paul, C. K.↗
Determination of the angular dependence of the specularity parameter by means of the magnetic field dependence of the magnetomorphic oscillations
Angular dependence of specularity parameter /probability of specular scattering of electron incident upon surface/ via magnetic field dependence of magnetomorphic harmonic oscillations
Soffer, S. B.↗
Colorimetry of Martian features by means of area scanning
Colorimetry of Mars surface from dual beam area scanner, considering light and dark areas contrast during 1969 opposition
Boyce, P. B.↗
Measurements of the earth's radiation budget from satellites during a five-year period. I - Extended time and space means
Earth radiation budget measurements, noting planetary albedo, IR radiant emittance and net balance
Suomi, V. E.↗
The meaning of Russell's law
Russell law validity of planet brightness dependence on phase integral, discussing backscattering surface and thick atmospheres effects
Veverka, J.↗
The extraction of accurate coordinates of images on photographic plates by means of a scanning type measuring machine
The Moire method experimental stress analysis is similar to a problem encountered in astrometry. It is necessary to extract accurate coordinates from images on photographic plates. The solution to the mutual problem found applicable to the field of experimental stress analysis is presented to outline the measurement problem. A discussion of the photo-reading device developed to make the measurements follows.
Ross, B. E.↗
Pulmonary-impedance power spectral analysis: A facile means of detecting radiation-induced gastrointestinal distress and performance decrement in man
Changes in respiratory variance revealed by power spectral analysis of the pulmonary impedance pneumogram can be used to detect and measure stresses directly or indirectly affecting human respiratory function. When gastrointestinal distress occurred during a series of 5 total-body exposures of 30 R at a rate of 1.5 R/min, it was accompanied by typical shifts in pulmonary impedance power spectra. These changes did not occur after protracted exposure of 250 R (30 R daily) at 1.5 R/hr that failed to cause radiation sickness. This system for quantitating respiratory effort can also be used to detect alterations in one's ability to perform under controlled exercise conditions.
Rick, R. C.↗
Use of a spacecraft borne altimeter for determining the mean sea surface and the geopotential
An experiment is proposed to test a first generation spacecraft-borne radar altimeter's capability to measure the topography of the sea surface. The initial radar altimeter will have an instrumental error of one meter and an overall accuracy to two to five meters. This instrument will thus improve the accuracy of the geoid from the present 10 to 20 meters to better than 5 meters. In order to detect storm surges, tidal forces, and ocean currents, an altimeter with an overall accuracy of at least ?1 meter will be required. The overall accuracy of the initial radar altimeter will thus primarily provide geodetic information and possible oceanographic information such as sea state.
Kahn, W. D.↗