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TEST CASES FOR REENTRY SURVIVABILITY MODELING

机译：再入生存能力建模的测试案例

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摘要

One approved approach for minimizing the long-termrnhazards posed by space debris is to reenter spacernhardware into the atmosphere at end-of-mission or tornplace hardware in an orbit with a relatively shortrnlifetime. Selection of a short lifetime orbit vice arndeorbited reentry into a safe area depends on predictionsrnof the hazards posed by random reentry of the object. Ifrnthe object is left in orbit, what is the casualtyrnexpectation associated with its eventual reentry?rnClearly, having high confidence in reentry hazardrnprediction tools is important to this decision-makingrnprocess and the final choice can have significantrnmission and cost impacts. This paper describes a set ofrntest cases that can be used to validate reentry hazardrnmodels. The test cases were assembled from reentryrncases where “known” and tracked objects reentered thernatmosphere and debris from the reentries wasrnsubsequently found on the ground and was analyzed.rnThe test cases include best estimates of the state, massrnproperties, and physical description of each object priorrnto reentry, the wind profile through which the debris fellrn(for one case), and the impact location and physicalrndescription of each surviving object. The report alsornsummarizes results of metallurgical analyses conductedrnon surviving debris, which places limits on thernmaximum temperatures reached during reentry. Detailsrnon a specific reentry are included as an example.
机译：最小化空间碎片造成的长期危害的一种已获认可的方法是，在任务结束时或在寿命相对较短的轨道上将撕裂的硬件重新放置到大气中，将间隔硬件重新进入大气。短寿命轨道的副轨道重入安全区的选择取决于对物体随机再进入所造成的危害的预测。如果将物体留在轨道上，与其最终重入有关的伤亡预期是什么？显然，对重入危险预测工具具有高度信心对这一决策过程很重要，而最终选择可能对排放和成本产生重大影响。本文介绍了一组可用于验证再入危害模型的最常见案例。测试案例是从再入案例中组装而成的，其中“已知”和被跟踪的物体重新进入了大气层，随后在地面上发现了再入的碎片，并进行了分析。 ，碎片掉落的风廓线（对于一种情况）以及每个幸存物体的撞击位置和物理描述。该报告还总结了残渣中进行的冶金分析结果，这对再入过程中达到的最高温度设置了限制。包括一个特定的重入详细信息作为示例。

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  • 会议地点 Versailles(FR)
  • 作者

    William Ailor; Wayne Hallman; Gary Steckel; Michael Weaver;

  • 作者单位

    The Aerospace Corporation, 2310 E El Segundo Blvd, El Segundo, CA, 90245, william.h.ailor@aero.org;

    The Aerospace Corporation, 2310 E El Segundo Blvd, El Segundo, CA, 90245, wayne.p.hallman@aero.org;

    The Aerospace Corporation, 2310 E El Segundo Blvd, El Segundo, CA, 90245, gary.l.steckel@aero.org;

    The Aerospace Corporation, 2310 E El Segundo Blvd, El Segundo, CA, 90245, michael.a.weaver@aero.org;

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  • 正文语种 eng
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