THE EXPLOSION MODELS FROM THE EQUILIBRIUM DENSITY PROFILE OF SMALL DEBRIS OBJECTS - COMMENTS

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题名:	THE EXPLOSION MODELS FROM THE EQUILIBRIUM DENSITY PROFILE OF SMALL DEBRIS OBJECTS - COMMENTS
作者:	SU,SY
贡献者:	太空及遙測研究中心
日期:	1995
上传时间:	2010-06-29 18:52:25 (UTC+8)
出版者:	中央大學
摘要:	Using an analytical solution for the downward drifts of the small debris particles in a stratified atmosphere, an equilibrium density profile of small debris objects has been obtained. The steady-state density profile indicates that the >0.4 cm objects should increase 4.3 times from 500 lan altitude to 950 km altitude. This resembles the variation in the current density profile extrapolated from explosion model which shows a similar increase of 4.24 times in the same altitude range with an increase of 1.69 times from 500 km altitude to 750 km altitude and 2.51 times from 750 km altitude to 950 km altitude. Both results are too flat in comparison with the recent observation in the Haystack data which indicates that the >0.5 cm objects increase 18.93 times in the flux profile from 500 km altitude to 950 km altitude. The implication of the analysis is that either the existing explosion models over-estimate the ejecta velocities of small fragments in the explosion or collision event in space or other unknown source is responsible for the large fluxes of small debris objects around 900 km altitude observed by Haystack radar.
關聯:	SPACE DEBRIS
显示于类别:	[太空及遙測研究中心] 期刊論文

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