Methods of calculating atmospheric tramsmission functions
Atmospheric radiation characteristics, and methods of calculating atmospheric attenuation functions
Drayson, S. R.↗
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Results for “attenuator”
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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Optically induced free-carrier light modulator
Gallium arsenide laser modulator, attenuation coefficients, and semiconductors for optical communication systems
Gruber, C.↗
Rocket exhaust-plume problems and some recent related research
Rocket exhaust research in areas of direct impingement heating, backwash base heating, radio signal attenuation, and interference with line of sight to ground stations
Andrews, E. H., Jr.↗
Second conference on sonic boom research
Conference on sonic boom reduction in supersonic transport flight - shock wave propagation and refraction, prediction methods for acoustic attenuation, and aerodynamic engineering aspects.
Ira R. Schwartz↗
Investigation of the properties of fiber metal acoustical materials
Fiber metal acoustic material development and testing for jet aircraft noise attenuation
Cimerol, J. J.↗
Ultrasonic investigation of energy gap anisotropy in superconducting molybdenum.
Longitudinal wave attenuation in pure molybdenum measured in normal and superconducting state, discussing energy gap anisotropy
Jones, C. K.↗
Escape depth for excited photoelectrons in KBr films.
Attenuation length of excited photoelectrons in evaporated potassium bromide films by measuring quantum yield as function of film thickness
Pong, W.↗
Effects of acute exposure to high-energy protons on primates.
Acute exposure biological effects on monkeys compared for high energy graphite attenuated protons and Co 60 gamma irradiation
Castle, B. L.↗
Rocket exhaust-plume problems and some recent related research.
Rocket exhaust plume problems including heating, structural loads, line of sight interference and radio signals attenuation
Andrews, E. H., Jr.↗
A new estimate of lunar seismicity due to meteorite impact.
Lunar structure study using seismic waves generated by meteorite impact, examining feasibility for Shoemaker statistics, noting inelastic attenuation
Laster, S. J.↗
Infrared aircraft spectra over desert terrain 8.5 mu to 16 mu.
IR spectra taken over desert by aircraft, showing attenuation of upwelling radiation by atmospheric gases and haze
Blaine, L. R.↗
Parametrization of absorption-line profiles.
Complex atoms absorption spectra attenuation cross sections parameterization noting multiple scattering, independent resonances, autoionization, etc
Shore, B. W.↗
Effect of photomeson production by the universal radiation field on high-energy cosmic rays.
Lifetime and attenuation mean free path of high energy cosmic rays, considering photomeson production effect
Stecker, F. W.↗
Thick transducers used for generating short-duration stress pulses in thin specimens
By generating short stress pulses with thick transducers, the pulse-echo method for determining sound velocities and acoustic attenuation can be applied to thin specimens. The stress pulses enter a specimen where one pulse is reflected several times before a succeeding pulse enters the specimen.
Peterson, R. G.↗
Analyses of silicon dioxide, magnesium oxide, lead fluoride, bismuth as low-pass velocity filters for neutrons
Transmission measurement of neutrons by filter materials for low energy neutrons is important for the study of structure and dynamics of condensed matter. Since only thermal neutrons are useful for such experiments, filter materials that transmit thermal neutrons while attenuating fast neutrons and gamma rays are of considerable interest.
Connor, D.↗
Optimum FM pre-emphasis
Calibrated RF signal generator, precision RF attenuator, and a wave analyzer are used to determine the spectral noise characteristics in the baseband of receiver as a function of RF input power.
Merz, K. W.↗
A comparison of two methods of measuring particle size of Al2O3 produced by a small rocket motor
The size of aluminum oxide particles produced by small rocket motors is determined by tank collection and spectrophotometry. The size of the particulate determines loss in thrust due to particle lag, particulate radiant heat transfer, acoustic attenuation and impingement and rocket plume structure and properties.
Dobbins, R. A.↗
Millimeter-wave atmospheric loss prediction method
Relationship between atmospheric attenuation and the ground temperature and humidity provides a reference from which changes in temperature and humidity will produce a corresponding atmospheric loss figure. Computer program computes atmospheric loss due to water content, given the measured loss and ground temperature and humidity.
Stelzried, C. T.↗