Analysis of Space Shuttle ground operations

Abstract

To assess the feasibility of proposed launch schedules for the Space Shuttle, we have developed a simulation model of the flow of activities comprising Shuttle turn around processing. Considering queueing delays caused by the limited capacity of ground facilities, the model estimates flight starting dates needed to meet a given launch schedule with a specified level of confi dence. The results of an extensive sensitivity analysis indicate that the currently projected schedules are optimistic and that the turnaround time will substan tially exceed the current goal of 28 days.

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