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LDEF experiment A0034: Atomic oxygen stimulated outgassingThe passive Long Duration Exposure Facility (LDEF) Experiment A0034, 'Atomic Oxygen Stimulated Outgassing', consisted of two identical one-sixth tray modules, exposing selected thermal control coatings to atomic oxygen and the combined space environment on the leading edge, and for reference, to the relative 'wake' environment of the trailing edge. Optical mirrors were included adjacent to the thermal coatings for deposition of the outgassing products. Ultraviolet grade windows and metal covers were provided for additional assessment of the effects of various environmental factors. Preliminary results indicate that orbital atomic oxygen is both a degrading and optically restorative factor in the thermo-optical properties of selected thermal coatings. There is evidence of more severe optical degradation on collector mirrors adjacent to coatings that were exposed to RAM-impinging atomic oxygen. This evidence of atomic oxygen stimulated outgassing is discussed in relation to alternative factors that could affect degradation. The general effects of the space environment on the experiment hardware as well as the specimens are discussed.
Document ID
19920015574
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Linton, Roger C.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Kamenetzky, Rachel R.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Reynolds, John M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Burris, Charles L.
(Southern Univ. Baton Rouge, LA., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: NASA. Langley Research Center, LDEF: 69 Months in Space. First Post-Retrieval Symposium, Part 2
Subject Category
Atomic And Molecular Physics
Accession Number
92N24817
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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