NASA Scientific and Technical Aerospace Reports

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SPACE TRANSPORTATION AND SAFETY
Includes passenger and cargo space transportation, e.g., shuttle operations; and space rescue techniques. For related information see
also 03 Air Transportation and Safety; 15 Launch Vehicles and Launch Operations; and 18 Spacecraft Design, Testing and Performance.
For space suits see 54 Man/System Technology and Life Support.
20040045308 NASA, Washington, DC, USA
Columbia Shuttle Recovery Operations, April 1, 2003
[2003]; 1 pp.; In English; No Copyright; Avail: CASI; A01, Hardcopy
This is a map of the debris scattering from the Columbia accident over parts of Texas and Louisiana. It depicts the location
of recovered debris, and identifies regional facilities important to the recovery effort.
CASI
Columbia (Orbiter); Position (Location); Debris
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SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
Includes space systems telemetry; space communications networks; astronavigation and guidance; and spacecraft radio blackout. For
related information see also 04 Aircraft Communications and Navigation; and 32 Communications and Radar.
20040045319 NASA Glenn Research Center, Cleveland, OH, USA
Low-Earth-Orbit Satellite Internet Protocol Communications Concept and Design
Slywezak, Richard A.; February 2004; 28 pp.; In English
Contract(s)/Grant(s): WBS 22-258-90-05
Report No.(s): NASA/TM-2004-212299; NAS 1.15:212299; E-13863; No Copyright; Avail: CASI; A03, Hardcopy
This report presents a design concept for a low-Earth-orbit end-to-end Internet-Protocol- (IP-) based mission. The goal
is to maintain an up-to-date communications infrastructure that makes communications seamless with the protocols used in
terrestrial computing. It is based on the premise that the use of IPs will permit greater interoperability while also reducing costs
and providing users the ability to retrieve data directly from the satellite. However, implementing an IP-based solution also
has a number of challenges, since wireless communications have different characteristics than wired communications. This
report outlines the design of a low-Earth-orbit end-to-end IP-based mission; the ideas and concepts of Space Internet
architectures and networks are beyond the scope of this document. The findings of this report show that an IP-based mission
is plausible and would provide benefits to the user community, but the outstanding issues must be resolved before a design
can be implemented.
Author
Internets; Low Earth Orbits; Protocol (Computers); Satellite Communication
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SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Includes satellites; space platforms; space stations; spacecraft systems and components such as thermal and environmental controls;
and spacecraft control and stability characteristics. For life support systems see 54 Man/System Technology and Life Support. For
related information see also 05 Aircraft Design, Testing and Performance; 39 Structural Mechanics; and 16 Space Transportation and
Safety.
20040045247 NASA Ames Research Center, Moffett Field, CA, USA
Finite-Rate Ablation Boundary Conditions for Carbon-Phenolic Heat-Shield
Chen, Y.-K.; Milos, Frank S.; [2003]; 17 pp.; In English; No Copyright; Avail: CASI; A03, Hardcopy
A formulation of finite-rate ablation surface boundary conditions, including oxidation, nitridation, and sublimation of
carbonaceous material with pyrolysis gas injection, has been developed based on surface species mass conservation. These
surface boundary conditions are discretized and integrated with a Navier-Stokes solver. This numerical procedure can predict
aerothermal heating, chemical species concentration, and carbonaceous material ablation rate over the heatshield surface of
re-entry space vehicles. In this study, the gas-gas and gas-surface interactions are established for air flow over a
carbon-phenolic heatshield. Two finite-rate gas-surface interaction models are considered in the present study. The first model
is based on the work of Park, and the second model includes the kinetics suggested by Zhluktov and Abe. Nineteen gas phase
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