The importance of the annual meteoroid streams to spacecraft and their detectors

McBride, Neil (1997) The importance of the annual meteoroid streams to spacecraft and their detectors. In: McDonnell, J.A.M. and Spohn, T. and Mohlmann, D. and Klinger, J. and Geophys, European and Space Agcy, European Geophys Soc, eds. Advances in Space Research. Advances in Space Research, 20. Elsevier Science Ltd pp. 1513-1516. ISBN 0-08-043305-7. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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In modelling dust fluxes to spacecraft surfaces and detectors, it is often assumed for simplicity that the influx is isotropic. The most popular working model used is that of Grun et al. (1985) which gives annual mean fluxes to a spinning flat plate detector at 1 A.U. However, particular spacecraft orientations can highlight anisotropies in the natural meteoroid environment. This paper considers one source of anisotropy by isolating the contribution to the annual mean flux from the major annual meteoroid streams. Flux (mass) distributions are derived for 50 annual streams, and it is found that the streams contribute to similar to 10% of the annual mean flux as seen by typical Low Earth Orbit (LEG) foil detectors at the (potentially hazardous) f(max) = 1 mm size regime (i.e. impacts that can penetrate 1 mm aluminium). Strong temporal variations are also seen, relevant to short-exposure missions.

Item Type: Conference or workshop item (Paper)
Additional information: Document Type: Proceedings Paper Conference Information: BO.8, BO.3 and BO.5 Symposium of COSPAR Scientific Commission B on Hypervelocity Impacts in Space and Planetology, at the 31st COSPAR Scientific Assembly Birmingham, England, Jul 14-21, 1996 Comm Space Res; Int Astron Union; Int Union Geodesy & Geophys; European Space Agcy; European Geophys Soc 1997 Published by Elsevier Science Ltd
Subjects: Q Science
T Technology
Q Science > QB Astronomy
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: M.A. Ziai
Date Deposited: 19 Apr 2009 19:28
Last Modified: 23 Jun 2014 13:02
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