Shuttle orbiter flash evaporator operational flight test performanceThe Flash evaporator System (FES is part of the Shuttle Orbiter Active Thermal Control Subsystem. The FES provides total heat rejection for the vehicle Freon Coolant Loops during ascent and entry and supplementary heat rejection during orbital mission phases. This paper reviews the performance of the FES during the first two Shuttle orbital missions (STS-1 and STS-2). A comparison of actual mission performance against design requirements is presented. Mission profiles (including Freon inlet temperature and feedwater pressure transients), control temperature, and heat load variations are evaluated. Anomalies that occurred during STS-2 are discussed along with the procedures conducted, both in-flight and post-flight, to isolate the causes. Finally, the causes of the anomalies and resulting corrective action taken for STS-3 and subsequent flights are presented.
Document ID
19830049708
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nason, J. R. (United Technologies Corp;. Hamilton Standard Div., Windsor Locks, CT, United States)
Behrend, A. F., Jr. (NASA Johnson Space Center Houston, TX, United States)