An analysis of the spectrum of mars.
Carbon-dioxide and hydrogen content in martian atmosphere, detected from a high dispersion spectrogram
MARS ATMOSPHERE↗
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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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Intensity measurements on spectra of gases of planetary interest - h sub 2, h sub o, and co sub 2.
Hydrogen quadrupole, water vapor and carbon dioxide spectral band intensities with reference to planetary atmosphere observations
WATER VAPOR↗
Bistatic-radar methods for studying planetary ionospheres and surfaces scientific report no. 2 /final/
Bistatic radar methods used to study planetary ionospheres and surfaces
RADAR OBSERVATION↗
A review of recent determinations of the composition and surface pressure of the atmos- phere of mars
Recent determinations of composition and surface pressure of Mars atmosphere
SURFACE PRESSURE↗
High intensity radiation heat source is capable of sustained operation
Water cooled, high intensity radiation source rated at 125 kw, with an efficiency of 31 to 34 percent is used in the evaluation of ablative materials under simulated conditions of high velocity entry into planetary atmospheres. The source operates repeatedly at maximum power for periods of 10 to 20 minutes.
Geideman, W. A.↗
The atmospheres of Mars and Venus.
Structure and composition of Mars and Venus atmospheres
MARS ATMOSPHERE↗
Transonic aerodynamic investigation of tension shell and blunted 100 deg conical shapes for unmanned entry vehicles
An experimental investigation of a spherically blunted 100° cone and two tension shell configurations with varying nose-bluntness ratios for use in unmanned entry into low -density planetary atmospheres has been conducted by the National Aeronautics and Space Administration at Mach numbers from 0.30 to 1.20 and at angles of attack from approximately O° to 40°. The results show that the models were longitudinally stable, with centers of pressure located rearward of the base at all test conditions. The tension shell configurations exhibited substantially higher axial-force coefficients than the 100° cone although the variation of axial-force coefficient with Mach number at zero angle of attack was similar for all configurations. An increase in tension shell body length resulted in a reduction of the axial-force coefficients and a more forward center-of-pressure location. Variation in nose bluntness had no significant effect on the longitudinal aerodynamic characteristics of the tension shell configurations.
TRANSONIC SPEED↗
Improved ion sources
Ion sources with magnetically aligned electron beam and compatibility with quadrupole mass spectrometer for planetary atmospheric analysis
ELECTRON BEAM↗
Supplemental selected studies of VHF/UHF COMMUNICATIONS for planetary /Mars/Venus/ relay links Final report
Multipath environment using planetary surface model and fast fading effects on relay link of communications between spacecraft and probe entering planetary atmosphere
MULTIPATH PROPAGATION↗
Significant achievements in space science 1966
Advances during 1966 in astronomy, exobiology, ionospheric sciences, radio and solar physics, and planetary atmospheres and planetology
Source record↗
Infrared absorption program Final report, 1 Jan. 1965 - 31 Jan. 1968
Absorption characteristics of infrared, laser, and thermal radiation in planetary atmospheres
Plass, G. N.↗
Rotation and Orientation of Cosmic Dust Particles
Cosmic dust particle behavior in interplanatary and interstellar space, and planetary atmosphere
Dolginov, A. Z.↗
Planetary breakdown studies in the Avco/RAD High-Voltage Breakdown Laboratory
High voltage breakdown phenomena in planetary atmospheres - prediction of voltage breakdown of any antenna in any atmosphere
Haigh, W. B.↗
Propagation of millimeter and submillimeter waves
Coherent radiation methods of measuring absorption spectra in planetary atmosphere, and millimeter and submillimeter wave propagation
Derr, V. E.↗
Energy loss functions for electrons and protons in planetary gases.
Energy loss functions for protons and electrons in atomic and molecular gases and various metals, noting application to planetary atmospheres studies
Green, A. E. S.↗
Significant Achievements in Space Science, 1967
Significant achievements in space sciences for 1967, including stellar astronomy, bioscience, ionospheres, planetology, particles and fields, solar physics, and planetary atmospheres
Source record↗
Solar X-rays scattered by Venus, Mars and the Moon
Scattering process of solar X rays with photoionization fluorescence by planetary atmospheres
Garmire, G. P.↗