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effects of space environment on space-based radar phased-array antenna: status and preliminary observationsThe overall objective is to evaluate the effect of the space environment on Kapton films considered for the Grumman space based radar (SBR) phased-array antenna. The most striking result is the overall good condition of the Kapton antenna planes and Kapton tensile specimens. This is largely attributable to the orientation of the Kapton (parallel and flush on the space end) and the stability of the LDEF in orbit. Results on elongation and mechanical properties of the plain and fiberglass reinforced Kapton will be described. Stress-dependent permanent deformation and some reductions in strain to failure were observed. Physical property testing of the materials is in progress. Electronic data acquisition and memory systems appeared to operate correctly, but functional tests were not yet performed. An evaluation of the high voltage-plasma interaction data is underway. Some minor systems anomalies (e.g., fastener sheared during removal, strong odor inside electronics container) were noted. Other observations such as radiation, contamination, impacts, and orientation features of atomic oxygen erosion are reported.
Document ID
19910015769
Document Type
Conference Paper
Authors
Whiteside, J. B.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Giangano, D.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Heuer, R. L.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Kamykowski, E.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Kesselman, M.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Rooney, W.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Schulte, R.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Stauber, Michael C.
(Grumman Aerospace Corp. Bethpage, NY, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA, Langley Research Center, First LDEF Post-Retrieval Symposium Abstracts
Subject Category
COMMUNICATIONS AND RADAR
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19910015658Analytic PrimaryFirst LDEF Post-Retrieval Symposium abstracts