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High voltage transmission microscopy of Surveyor 3 camera shroudsThe internal structure of painted and unpainted aluminum alloy sheet samples from the TV camera shrouds were examined by high-voltage transmission electron microscopy. No clear-cut evidence of radiation damage effects was observed. Noticeable differences in microstructures between the upper visor and the sides and bottom of the lower shroud suggest different thermal histories, and the maximum temperatures due to solar heating are estimated to be between 164 and 319 C. Some correlation between microstructures and maximum estimated temperature is noted. It is felt that the apparent temperature rise due to solar heating will not affect the structural integrity of spacecraft components except possibly for very long periods of exposure. However, substantial thermal diffusion could affect interpretation of solar wind rare gas studies.
Document ID
19720019108
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Fisher, R. M.
(United States Steel Corp. Monroeville, PA, United States)
Duff, W. R.
(United States Steel Corp. Monroeville, PA, United States)
Thomas, L. E.
(United States Steel Corp. Monroeville, PA, United States)
Radcliffe, S. V.
(Case Western Reserve Univ. Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA, Washington Analysis of Surveyor 3 Mater. and Phot. Returned by Apollo 12
Subject Category
Instrumentation And Photography
Accession Number
72N26758
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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