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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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Degree of coherence of optical beam traversing atmospheric medium including simulated fog for design of optical heterodyne receiver
Space charge theory of one-dimensional, monoenergetic, unipolar and bipolar currents traversing on otherwise evacuated space between infinite plane parallel electrodes
Two-stream instability for longitudinal waves in plasma traversed by ion beam
Measurements that could be carried out during traverse of moon in Kepler-Encke region to determine subsurface structure, surface density and chemical composition, etc
Absorption probability for photons traversing photon gases with different spectra
This report summarizes the activities of the various organizations that have been giving some thought and design effort to producing a lunar surface traversing vehicle. It is a state-of-the-art rather than a technical report. It's purpose is to show where we are in this effort and to survey the trend of the various designers.
GERT Simulation Program simulates GERT networks to obtain statistics on specified nodes of the network. It performs sampling experiments to determine which branches of the network are taken and how long it takes to traverse a branch of the network.
Preliminary analysis of magnetic measurements by Explorer 35 in lunar orbit suggested an upper limit of 4 x 10(exp 20) gauss-cm3 for the magnetic moment of the moon. A more detailed analysis of a larger body of Explorer 35 data from measurements in the earth's magnetic tail has subsequently been performed. Reversal of the ambient tail field by 180deg when the moon and spacecraft traverse the neutral sheet permits a separation of permanent and induced field contributions to the total field observed near the moon. When compared to calculated permanent and induced field effects, the results of this analysis lead to new upper limits of 102' gauss-cm3 on the lunar magnetic moment and 4y on the lunar surface field. Limiting the moment induced in the moon by the magnetotail field permits an upper limit of 1.8 to be set on the bulk relative magnetic permeability of the moon.
Effects of matter traversed by cosmic rays in source region and interstellar medium analyzed using charged particles energy losses
Two-axis winching and traversing device is used for installing liquid-propellant rocket-engine fuel and liquid oxygen suction ducts between the valves and the rocket engine on a test stand. The device raises and maneuvers the duct into the required position where it can be safely installed by mechanics.
Mathematical models for probability of successful traverse of asteroid belt or zero penetration of spacecraft shield
Radio ray scattering resulting from traversing anisotropically turbulent solar corona, noting refraction effect on signal pulse arrival time
Effective heat transfer coefficient lambda for microscopic Fe particles traversing rarefied air, oxygen and Ar target gases
MHD Rankine-Hugoniot equations for ion density, thermal pressure and convective velocity magnitude and orientation during Pioneer 6 traversal of earth bow shock
Interstellar propagation effect on spectra and charge ratios due to ionization energy loss and nuclear spallation during traversal of matter
Energy loss of high energy cosmic rays traversing isotropic radiation field of arbitrary energy spectrum in pair producing collisions with ambient photons
Development of gravimeter for lunar traverse gravity experiment and specifications for instrument, operation, and experiment error budget
Total cross section measurements for formation of metastable hydrogen atoms by charge transfer of proton traversed targets of helium, argon, nitrogen, and oxygen