Application of Design of Experiments to Flight Test: A Case Study

Abstract

whereas the number of data points required to understand the system is reduced. In this limited effort, an actual flight-test program serves as a case study to compare and contrast five different designs to explore a flight-test envelope. The case-study data are analyzed using each designed experiment, and the results are compared and contrasted as a cost-benefit relationship between flight-test resources expended and system understanding gained (i.e.,statisticalconfidenceandpower).Thedesignofexperimentsmethodologies,asappliedtothiscasestudy,showa 50to80%reductionin flight-testresourcesyetproducesimilarlevelsofstatisticalconfidenceandpower.Inaneraof restricted budgets and time lines, careful design and thoughtful analysis of flight-test experiments can make the difference between a failed or canceled flight-test program and the successful fielding of a needed capability.

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