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M and D SIG progress report: Laboratory simulations of LDEF impact featuresLaboratory impact experiments are needed to understand the relationship between a measured penetration hole diameter and associated projectile dimension in the thermal blankets of experiment A0178, which occupied some 16 sq. m. These blankets are composed of 125 micron thick Teflon that has an Ag/enconel second mirror surface, backed by organic binder and Chemglaze paint for a total thickness of some 170 microns. While dedicated experiments are required to understand the penetration behavior of this compound target in detail, we report here on impact simulations sponsored by other projects into pure Teflon and aluminum targets. These experiments will allow first order interpretations of impact features on the Long Duration Exposure Facility (LDEF), and they will serve as guides for dedicated experiments that employ the real LDEF blankets, both exposed and unexposed, for a refined understanding of the LDEF's collisional environment. We employed a light gas gun to launch soda-lime glass spheres from 50 to 3200 microns in diameter that impacted targets of variable thickness. Penetration measurements are given.
Document ID
19920014080
Document Type
Conference Paper
Authors
Horz, Friedrich (Lockheed Engineering and Sciences Co. Houston, TX., United States)
Bernhard, R. P. (Lockheed Engineering and Sciences Co. Houston, TX., United States)
See, T. H. (POD Associates, Inc., Albuquerque NM., United States)
Atkinson, D. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Allbrooks, M. (POD Associates, Inc., Albuquerque NM., 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 1
Subject Category
SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19920014037Analytic PrimaryLDEF: 69 Months in Space. First Post-Retrieval Symposium, part 1