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ApolloBook Chapter

Environmental factors

20111 min read68 words
E.L.Michel, J.M. Waligora, D.J. Horrigan, and W.H. Shumate
Johnson Space Center

The selection of an Apollo spacecraft atmosphere was based on the establishment of an acceptable range of atmospheric composition and pressure, the establishment of acceptable carbon dioxide levels, thermal comfort criteria, and acceleration and impact limits. The prime design requirements in a spacecraft system are minimum weight, volume, power usage, reliability, ease of maintenance, environmental compatibility, integration with other systems, and crew compatibility. The selection considerations are reviewed.


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