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Bounding the Risk of Crew Loss Following Orbital Debris Penetration of the International Space Station at Assembly Stages 1J and 1EOrbital debris impacts on the International Space Station occur frequently. To date, none of the impacting particles has been sufficiently large to penetrate manned pressurized volumes. We used the Manned Spacecraft Crew Survivability code to evaluate the risk to crew of penetrations of pressurized modules at two assembly stages: after Flight lJ, when the pressurized elements of Kibo, the Japanese Experiment Module, are present, and after Flight lE, when the European Columbus Module is present. Our code is a Monte Carlo simulation of impacts on the Station that considers several potential event types that could lead to crew loss. Among the statistics tabulated by the program is the probability of death of one or more crew members, expressed as the risk factor, R. This risk factor is dependent on details of crew operations during both ordinary circumstances and decompression emergencies, as well as on details of internal module configurations. We conducted trade studies considering these procedure and configuration details to determine the bounds on R at the 1J and 1E stages in the assembly sequence. Here we compare the R-factor bounds, and procedures and configurations that reduce R at these stages.
Document ID
20020092103
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Evans, S. (NASA Marshall Space Flight Center Huntsville, AL United States)
Lewis, H. (NASA Marshall Space Flight Center Huntsville, AL United States)
Williamsen, J. (Denver Univ. Denver, CO United States)
Evans, H. (Denver Univ. Denver, CO United States)
Bohl, W. (Denver Univ. Denver, CO United States)
Parker, Nelson
Date Acquired
September 7, 2013
Publication Date
October 19, 2002
Subject Category
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: World Space Congress
Location: Houston, TX
Country: United States
Start Date: October 10, 2002
End Date: October 19, 2002
Funding Number(s)
CONTRACT_GRANT: NCC8-176
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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