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Analysis of Space Shuttle ground operations

James R. Wilson

Mechanical Engineering Department The University of Texas at Austin Austin, Texas 78712

David K. Vaughan

Mechanical Engineering Department The University of Texas at Austin Austin, Texas 78712

Edward Naylor

Arthur Andersen and Company Houston, Texas 77002

Robert G. Voss

Schedules Planning and Integration Office Johnson Space Center National Aeronautics and Space Administration Houston, Texas 77058

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.

Key Words: activity networks • aerospace • combined languages • discrete stochastic simula tion • learning curves • network models, quantile estimation • risk analysis • sensi tivity analysis • Space Shuttle

SIMULATION, Vol. 38, No. 6, 187-203 (1982)
DOI: 10.1177/003754978203800602
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D. J. DeBrota, R. S. Dittus, S. D. Roberts, and J. R. Wilson
Visual interactive fitting of bounded Johnson distributions
SIMULATION, May 1, 1989; 52(5): 199 - 205.
[Abstract] [PDF]