Meteoroid Engineering Model (MEM): A Meteoroid Model For The Inner Solar System |
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Authors: | H McNamara J Jones B Kauffman R Suggs W Cooke S Smith |
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Institution: | (1) Space Environments Team, National Aeronautics and Space Administration, Marshall Space Flight Center, AL, 35812, USA;(2) Department of Physics, University of Western Ontario, , Canada;(3) Morgan Research, Marshall Space Flight Center, AL, 35812, USA |
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Abstract: | In an attempt to overcome some of the deficiencies of existing meteoroid models, NASA’s Space Environments and Effects (SEE)
Program sponsored a 3 year research effort at the University of Western Ontario. The resulting understanding of the sporadic
meteoroid environment – particularly the nature and distribution of the sporadic sources – were then incorporated into a new
Meteoroid Engineering Model (MEM) by members of the Space Environments Team at NASA’s Marshall Space Flight Center. This paper
discusses some of the revolutionary aspects of MEM which include (a) identification of the sporadic radiants with real sources
of meteoroids, such as comets, (b) a physics-based approach which yields accurate fluxes and directionality for interplanetary
spacecraft anywhere from 0.2 to 2.0 astronomical units (AU), and (c) velocity distributions obtained from theory and validated
against observation. Use of the model, which gives penetrating fluxes and average impact speeds on the surfaces of a cube-like
structure, is also described along with its current limitations and plans for future improvements. |
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Keywords: | Engineering model interplanetary sporadic meteoroids |
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