Physics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979esasp.153...85c&link_type=abstract
In ESA Comet Halley Micrometeoroid Hazard Workshop p 85-92 (SEE N80-22200 12-91)
Physics
1
Hypervelocity Impact, Meteoroid Protection, Space Probes, Spacecraft Shielding, Structural Design Criteria, Critical Mass, Halley'S Comet, Honeycomb Structures, Particle Size Distribution, Spacecraft Design, Spallation
Scientific paper
Design principles of spaced, multiwall meteoroid protection are investigated in the light of experimental data generated during the Apollo Program. The outer wall or shield is shown to be the most important element in the meteoroid-spacecraft interaction. The condition of the debris is primarily a function of the shock pressure, the melting points of the meteoroid and the shield, and the length of the meteoroid and thickness of the shield. Spacing between the walls is effective up to approximately 100 times the length of the meteoroid. The required thickness of the second wall is shown to be proportional to the meteoroid mass, velocity, and density, and to the spacing between the walls, taken with exponents dependent upon the condition of the debris. The effects of placing additional elements (insulation or honeycomb cells) between the two walls are discussed, and the efficiency of various protective configurations is presented. An analysis of the meteoroid protection proposed for the Comet Halley probe is included as an appendix.
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