Physics
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008stin...0832771b&link_type=abstract
Technical Report, Sixth International Energy Conversion Engineering Conference (IECEC)
Physics
Plumes, Service Modules, Solar Arrays, Crew Exploration Vehicle, Reaction Control, Impingement, Anomalies, Contamination, Heat Flux, Loads (Forces)
Scientific paper
NASA's new Orion Crew Exploration Vehicle has geometry that orients the reaction control system (RCS) thrusters such that they can impinge upon the surface of Orion's solar array wings (SAW). Plume impingement can cause Paschen discharge, chemical contamination, thermal loading, erosion, and force loading on the SAW surface, especially when the SAWs are in a worst-case orientation (pointed 45 towards the aft end of the vehicle). Preliminary plume impingement assessment methods were needed to determine whether in-depth, timeconsuming calculations were required to assess power loss. Simple methods for assessing power loss as a result of these anomalies were developed to determine whether plume impingement induced power losses were below the assumed contamination loss budget of 2 percent. This paper details the methods that were developed and applies them to Orion's worst-case orientation.
Bury Kristen M.
Kerslake Thomas W.
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