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Space Station THC/IMV Development Test/Analysis Correlations and Flight Predictions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 14, 1997 by SAE International in United States
Annotation ability available
The International Space Station (ISS) Temperature and Humidity Control/Intermodule Ventilation (THC/IMV) system for the U.S. Lab provides required cooling air for the U.S. Lab and also provides “parasitic” cooling air for Node 1 and its attached elements. This scheme provides cooled air from the Lab THC directly to Node 1 and also to elements attached to Node 1, at different stages of Space Station assembly.
A development test of the U.S. Lab and Node 1/attached elements' integrated THC/IMV ducting system was performed in the summer of 1995. This test included the U.S. Lab's development level Common Cabin Air Assembly (CCAA), which removes sensible and latent heat from the circulated and ducted cabin air. A referenced 1996 ICES Paper contains the initial correlation results.
An analytical model has been developed, which has been used to predict flow and pressure drop performance of the system for several potential and actual changes from the Development Test configuration. Flight configuration versions of the model have been prepared. This paper presents further correlations of test data beyond those presented in the 1996 ICES paper, and predictions of flight performance incorporating changes in hardware and changes in operating conditions.
The Development Test results and further analytic evaluations have revealed that there is a need for more cooling air flow to the Cupola than was provided by the tested development THC/IMV system. It has been determined that by isolating the port and starboard THC supply air duct strings from each other and operating both CCAA's, this deficit in cooling air for the Cupola can be overcome.
|Technical Paper||International Space Station THC/IMV Development Test and Analytical Model Correlation|
|Ground Vehicle Standard||Laboratory Measurement of Random Incidence Sound Absorption Tests Using a Small Reverberation Room|
|Technical Paper||ISS Pressure Control Assembly|
CitationBarker, R. and von Jouanne, R., "Space Station THC/IMV Development Test/Analysis Correlations and Flight Predictions," SAE Technical Paper 972565, 1997, https://doi.org/10.4271/972565.
- Barker, R. S., von Jouanne, R. G., Schrader, T., “International Space Station THC/IMV Development Test and Analytical Model Correlation”, ICES 1996, SAE 961401, July, 1996.
- Schrader, Ted, “ISSA Node/Lab ECLSS Flow Balance Development Test Documentation Drawing”, McDonnell Douglas Corp. Drawing 1T73837, January 11, 1996.
- Weiner, F.R. et al., “SAE Aerospace Applied Thermodynamics Manual, AIR 1168/1, Thermodynamics of Incompressible and Compressible Flow”, 1989.
- Bird, C., Barker, R. S., “Temperature and Humidity Control Dynamic Performance Analysis”, ICES 1993, SAE 932189, July, 1993.
- Stout, W.L., Seibel, W., “Multibranch Duct Flow Computer Program - User's Manual”, Boeing Co. Report, December 12, 1987.