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A fresh look at crater scaling laws for normal and oblique hypervelocity impactsWith the concomitant increase in the amount of man-made debris and an ever increasing use of space satellites, the issue of accidental collisions with particles becomes more severe. While the natural micrometeoroid population is unavoidable and assumed constant, continued launches increase the debris population at a steady rate. Debris currently includes items ranging in size from microns to meters which originated from spent satellites and rocket cases. To understand and model these environments, impact damage in the form of craters and perforations must be analyzed. Returned spacecraft materials such as those from LDEF and Solar Max have provided such a testbed. From these space-aged samples various impact parameters (i.e., particle size, particle and target material, particle shape, relative impact speed, etc.) may be determined. These types of analyses require the use of generic analytic scaling laws which can adequately describe the impact effects. Currently, most existing analytic scaling laws are little more than curve-fits to limited data and are not based on physics, and thus are not generically applicable over a wide range of impact parameters. During this study, a series of physics-based scaling laws for normal and oblique crater and perforation formation has been generated into two types of materials: aluminum and Teflon.
Document ID
19940016391
Document Type
Conference Paper
Authors
Watts, A. J. (POD Associates, Inc. Albuquerque, NM, United States)
Atkinson, D. R. (POD Associates, Inc. Albuquerque, NM, United States)
Rieco, S. R. (POD Associates, Inc. Albuquerque, NM, United States)
Brandvold, J. B. (POD Associates, Inc. Albuquerque, NM, United States)
Lapin, S. L. (POD Associates, Inc. Albuquerque, NM, United States)
Coombs, C. R. (POD Associates, Inc. Albuquerque, NM, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z
Subject Category
SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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