Predicted and observed directional dependence of meteoroid/debris impacts on LDEF thermal blankets

Computer Science – Numerical Analysis

Scientific paper

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Environment Models, Long Duration Exposure Facility, Meteoroid Concentration, Meteoroid Hazards, Space Debris, Thermal Insulation, Numerical Analysis, Penetration, Thickness

Scientific paper

The number of impacts from meteoroids and space debris particles to the various LDEF rows is calculated using ESABASE/DEBRIS, a 3-D numerical analysis tool. It is based on recent reference environment flux models and includes geometrical and directional effects. A comparison of model predictions and actual observations is made for penetrations of the thermal blankets which covered the UHCR experiment. The thermal blankets were located on all LDEF rows, except 3, 9, and 12. Because of their uniform composition and thickness, these blankets allow a direct analysis of the directional dependence of impacts and provide a test case for the latest meteoroid and debris flux models.

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