Extensive maintainability (M) and reliability (R) studies of a number of manned spacecraft missions indicate that the Environmental Control/Life Support System (EC/LSS) generally requires more scheduled and unscheduled maintenance than any other subsystem. This paper summarizes the EC/LSS M and R analyses performed on some of these studies. The expected redundancy and spares required to achieve a desired reliability is discussed. The requirements for scheduled and unscheduled maintenance are evaluated in terms of expected spares usage, maintenance time, and potential problem areas.
Maintainability and Reliability of Environmental Control/Life Support Systems
Sae Technical Papers
National Aeronautic and Space Engineering and Manufacturing Meeting ; 1968
1968-02-01
Conference paper
English
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