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Space Flight Experiments to Measure Polymer Erosion and Contamination on SpacecraftAtomic oxygen erosion and silicone contamination are serious issues that could damage or destroy spacecraft components after orbiting for an extended period of time, such as on a space station or satellite. An experiment, the Polymer Erosion And Contamination Experiment (PEACE) will be conducted to study the effects of atomic oxygen (AO) erosion and silicone contamination, and it will provide information and contribute to a solution for these problems. PEACE will fly 43 different polymer materials that will be analyzed for AO erosion effects through two techniques: mass loss measurement and recession depth measurement. Pinhole cameras will provide information about the arrival direction of AO, and silicone contamination pinhole cameras will identify the source of silicone contamination on a spacecraft. All experimental hardware will be passively exposed to AO for up to two weeks in the actual space environment when it flies in the bay of a space shuttle. A second set of the PEACE Polymers is being exposed to the space environment for erosion yield determination as part of a second experiment, Materials International Space Station Experiment (MISSE). MISSE is a collaboration between several federal agencies and aerospace companies. During a space walk on August 16, 2001, MISSE was attached to the outside of the International Space Station (ISS) during an extravehicular activity (EVA), where it began its exposure to AO for approximately 1.5 years. The PEACE polymers, therefore, will be analyzed after both short-term and long-term AO exposures for a more complete study of AO effects.
Document ID
20020062992
Document Type
Technical Memorandum (TM)
Authors
Lillis, Maura C. (Hathaway Brown School Shaker Heights, OH United States)
Youngstrom, Erica E. (Hathaway Brown School Shaker Heights, OH United States)
Marx, Laura M. (Hathaway Brown School Shaker Heights, OH United States)
Hammerstrom, Anne M. (Hathaway Brown School Shaker Heights, OH United States)
Finefrock, Katherine D. (Hathaway Brown School Shaker Heights, OH United States)
Youngstrom, Christiane A. (Hathaway Brown School Shaker Heights, OH United States)
Kaminski, Carolyn (Hathaway Brown School Shaker Heights, OH United States)
Fine, Elizabeth S. (Hathaway Brown School Shaker Heights, OH United States)
Hunt, Patricia K. (Hathaway Brown School Shaker Heights, OH United States)
deGroh, Kim K. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
June 1, 2002
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA/TM-2002-211553
NAS 1.15:211553
E-13328
Funding Number(s)
PROJECT: RTOP 755-A4-06
Distribution Limits
Public
Copyright
Public Use Permitted.

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