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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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Satellite data for reevaluating extraterrestrial particles origin found in polar ice, atmosphere and terrestrial surface collections
Lunar crater densities inside Tycho, Aristarchus and Copernicus
Pioneer 6 S band telemetry carrier Faraday rotation during corona occultation measured by deep space tracking antenna
Cosmogenic Al 26 in achondrites and chondrites measured by nondestructive gamma-gamma coincidence counting
Solar IR spectrum recorded by LPL B spectrometer on NASA CV-990 aircraft using one micron grating, noting resolution
Trapped charging and photovoltaic performance of Cu2S-CdS cell including heat treatment effects
Rhenium alloying effect on room temperature ductility of Cr, Mo and W, measuring lattice parameters by Debye-Scherer method
Circadian oscillations and photoperiodic time measurement in Pectinophora gossypiella
Venus carbon dioxide band, deriving rotational temperatures at various phase angles
Early type stars radiant flux observation from OGO 6 satellite
Computerized method of interpreting low resolution mass spectra in organic chemical analysis, describing inference maker program applications and results
Lydia asteroid observations, presenting light curves brightness and phase functions near opposition
Galactic dynamo generated magnetic field periodic modes based on mathematical model involving cyclonic turbulence and nonuniform rotation of gaseous disk
Halophilic bacteria electron transport chain, studying protein, phospholipids, flavoproteins and cytochromes sedimentation properties by electron microscopy and light scattering technique
Least squares and sequential estimation techniques application to Mariner 6 and 7 tracking data analysis, verifying Einstein relativity theory on electromagnetic radiation propagation
This document contains trades and analyses conducted during the Modular Space Station Phase B System Definition. Requirements and concepts considered and the tradeoff analysis leading to the preferred concept are presented. Integrated analyses are presented for subsystems and thermal control. Specific trades and analyses are presented for water management, atmosphere control, energy storage, radiators, navigation, control moment gyros, and system maintenance. The analyses of manipulator concepts and requirements, and supplemental analyses of information management issues are summarized. Subsystem reliability analyses include a detailed discussion of the critical failure analysis.
A variety of nitrogen compounds have been synthesized by a static Fischer-Tropsch type reaction from CO, D2 and ND3, with Ni-Fe and Al2O3 catalysts. In this reaction, the gas is heated to 500-700 C for about 0.5 hr, and then cycled through lower temperatures (100-400 C) for 1-14 days. Products were analyzed by mass spectrometry in conjunction with gas chromatography and other chromatographic techniques. Compounds produced include alkyl cyanides, pyrroles, porphyrin-like compounds, guanidines, hydantoin, uracil and its derivatives, thymine, adenine, guanine, xanthine, melamine, as well as alkanes, alkenes and aromatic hydrocarbons. Such reactions may have been involved in the production of interstellar molecules, organic compounds in meteorites, and prebiotic organic matter on planets.
Study of the F + H2 reaction, which is of special theoretical interest since it is one of the simplest examples of an exothermic chemical reaction. The FH2 system involves only 11 electrons, and the computation of a potential-energy hypersurface to chemical accuracy may now be within the reach of ab initio calculations. The 'arrested relaxation' variant of the infrared chemiluminescence method is used to obtain the initial vibrational, rotational and translational energy distributions in the products of exothermic reactions.