Penetration rates over 30 years in the space age

Details Penetration rates over 30 years in the space age Penetration rates over 30 years in the space age

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ldef.symp..337m&link_type=abstract

In NASA. Langley Research Center, LDEF: 69 Months in Space. Third Post-Retrieval Symposium, Part 1 p 337-351 (SEE N95-23796 07-9

Computer Science

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Aluminum Alloys, Cratering, Impact Damage, Meteorite Collisions, Penetration, Space Debris, Spacecraft Structures, Ariel 2 Satellite, Eureca (Esa), Hypervelocity Impact, Long Duration Exposure Facility, Metal Foils, Meteorite Craters, Space Shuttles, Space Transportation System 3 Flight

Scientific paper

Experimental data from spacecraft providing impact penetration rates and cratering for metallic targets is reviewed. Data includes NASA Explorers 16 and 23 and the Pegasus series, the second US-UK satellite Ariel 2, Space Shuttle STS-3 (MFE), recovered surfaces on Solar Max Satellite, The Long Duration Exposure Facility (LDEF) and EuReCa TiCCE. Factors concerning exposure to the environment are considered and, especially, material properties which affect the penetration resistance. Reference to a common material, Aluminum alloy 2024-T3, is effected and the data then compared to define firstly an average impact flux over the period. The data is examined, in the context of possible satellite and space debris growth rates, to determine the constancy of the flux. This also provides strong constraints on the current space debris component. It is found that the impact data are consistent with domination by natural meteoroid sources. Growth rates are not evident within the period 1980-1990 and Eureca TiCCE fluxes in 1993, for particles penetrating foils of around 10 microns thickness, supports the constancy of the flux. At larger dimensions the 1993 Eureca TiCCE fluxes show an 8-fold increase but this is considered not inconsistent with the selective exposure to meteoroid streams of a satellite stabilized in heliocentric co-ordinates for an 11 month period.

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