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Managing Risk for Thermal Vacuum Testing of the International Space Station RadiatorsThe International Space Station (ISS) is designed with large deployable radiator panels that are used to reject waste heat from the habitation modules. Qualification testing of the Heat Rejection System (HRS) radiators was performed using qualification hardware only. As a result of those tests, over 30 design changes were made to the actual flight hardware. Consequently, a system level test of the flight hardware was needed to validate its performance in the final configuration. A full thermal vacuum test was performed on the flight hardware in order to demonstrate its ability to deploy on-orbit. Since there is an increased level of risk associated with testing flight hardware, because of cost and schedule limitations, special risk mitigation procedures were developed and implemented for the test program, This paper introduces the Continuous Risk Management process that was utilized for the ISS HRS test program. Testing was performed in the Space Power Facility at the NASA Glenn Research Center, Plum Brook Station located in Sandusky, Ohio. The radiator system was installed in the 100-foot diameter by 122-foot tall vacuum chamber on a special deployment track. Radiator deployments were performed at several thermal conditions similar to those expected on-orbit using both the primary deployment mechanism and the back-up deployment mechanism. The tests were highly successful and were completed without incident.
Document ID
20010059377
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Carek, Jerry A. (NASA Glenn Research Center Cleveland, OH United States)
Beach, Duane E. (NASA Glenn Research Center Cleveland, OH United States)
Remp, Kerry L. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2000
Subject Category
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: 19th Aerospace Testing Seminar
Location: Manhattan Beach, CA
Country: United States
Start Date: October 2, 2000
End Date: October 5, 2000
Sponsors: Advanced Thermal Systems, Inc.
Funding Number(s)
PROJECT: RTOP 282-30-07
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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