Elastic constants of niobium from 4.2 deg to 300 deg K.
Niobium elastic constants tabulated for various temperatures, using RF pulse-echo method
NIOBIUM↗
SEARCH · Engineering Papers
Results for “Echo”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Preliminary Venus radar results.
Spectrum and range spectrum analysis of Venus radar echoes obtained from experiments
VENUS RADAR REFLECTION↗
Radar observations of Mars.
Radar observation of Mars using only spectral analysis of echoes
RADAR OBSERVATION↗
Communications in space.
Book on communications satellites design, testing, operation and power systems for Echo, Telstar, Relay, Syncom, ground stations, etc
COMMUNICATIONS SATELLITE↗
Ultrasonic temperature measuring device
Pulse echo ultrasonic system automatically determines the temperature in the core of a nuclear rocket engine by measuring the transit time of an acoustic pulse in a wire sensor. The measurement is based on the fact that the speed of sound in the sensor material is a function of temperature.
Carnevale, E. H.↗
Improved communication system for large operations center
When several microphones are fed into a common system, sound originating at any given source results in poor articulation. Introduction of an automatic microphone priority control suppresses echo and reverberation.
Draper, M. S.↗
Ultrasonic temperature measuring device Final report
Pulse echo ultrasonic system for automatically determining temperature by measuring round trip transit times in wire sensors
Carnevale, E. H.↗
Stresses caused by an in plane line load used to rotate a thin-walled spherical satellite
Contour plots tabulated for stress resultants and deformations brought about by sinusoidal in plane line loads acting along great circles of spherical satellites of Echo type
Stroud, W. J.↗
Radar studies of the moon, volume 2 Final report
Supersynthesis and delay-Doppler methods of mapping radar echo power distribution across lunar surface
Source record↗
Lunar radar scattering at 6 and 12 meter wavelengths
Lunar radar echoes at 6 and 12 m wavelengths analyzed to obtain lunar surface scattering data
Burns, A. A.↗
Photometric observations of artificial satellites for determining optical and physical characteristics. I.
PAGEOS 1 and Echo 1 satellites tracked and photometrically analyzed in U-B-V spectral regions, describing phototubes, filters and Cassegrain reflecting telescope
Emmons, R. H.↗
Experimental theoretical evaluation of a passive communications satellite
Radar reflectivity of Echo 2 passive communications satellite
Kampinsky, A.↗
Diurnal variation of the electron concentration in the lower magnetosphere as detected by lunar radar experiment.
Magnetospheric diurnal electron concentration variation from Faraday polarization rotation and differential Doppler frequency measurements of lunar radar echoes
Yoh, P.↗
Radar characteristics of known insects in free flight.
Automatic radar tracks of various insect species in free flight suggest dot angel echoes are due to insects
Glover, K. M.↗
A lunar radar backscattering curve for the Apollo program.
Lunar radar backscattering data for Apollo program obtained over lunar-like terrain by scatterometer using echoes from fan-beam antenna
Floyd, W. L.↗
A radar study of the lunar crater Tycho at 3.8-cm and 70-cm wavelengths.
Radar echoes intensity distribution maps from lunar surface surrounding crater Tycho
Pettengill, G. H.↗
Radar studies of the earth.
Radar backscattering from earth investigated by aircraft and rocket flights, discussing echo vs altitude and penetration of wave into surface
Brown, W. E.↗
Spacecraft demonstration of sequential decoding using Lunar Orbiter V.
Sequential decoder performance demonstration on data transmitted on spacecraft link, using Lunar Orbiter 5 and Deep Space Net Echo station
Hurd, W. J.↗