Deriving the velocity distribution of meteoroids from the measured meteoroid impact directionality on the various LDEF surfaces

Details Deriving the velocity distribution of meteoroids from the measured meteoroid impact directionality on the various LDEF surfaces Deriving the velocity distribution of meteoroids from the measured meteoroid impact directionality on the various LDEF surfaces

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ldef.symp..569z&link_type=abstract

In NASA. Langley Research Center, LDEF: 69 Months in Space. First Post-Retrieval Symposium, Part 1 p 569-579 (SEE N92-23280 14-9

Computer Science

1

Craters, Hypervelocity Impact, Long Duration Exposure Facility, Meteorite Collisions, Meteoroid Concentration, Meteoroids, Spacecraft Motion, Velocity Distribution, Orbits, Trailing Edges

Scientific paper

Because of spacecraft orbital motion about the Earth, a much higher flux of meteoroids is expected to strike spacecraft surfaces that face in the direction of spacecraft motion (apex direction) than would strike apex facing or trailing edge surfaces. Impact velocities are also higher on apex facing surfaces compared to antapex facing surfaces which futher increases the apex/antapex ratio of spatial density of impact craters of a given size. Measurements of the areal densities of impact craters on the different LDEF surfaces should give important clues about the velocity distribution, and therefore the origins, of meteoroids. Preliminary results appear to support the meteoroid velocity distributions derived by Erickson and by Kessler, which would lead to a mean impact velocity on the LDEF spacecraft of about 19 km/s.

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