A difference-fractional FOM decision method for down-selection of hypersonic compression system configurations

Authors:  Ali Sarosh, Chen Shi-Ming, Dong Yun-Feng

Abstract:
A linear, multi-variable decision method called DF-APSO (difference-fractional actual, perfect, scaled, optimized) figure of merit is proposed for quantitative down-selection of comparative aerothermodynamic configurations of highly-integrated hypersonic compression system. It uses non-dimensional fractions of difference parameters to yield scaled figures-of-merit. A total of five unique configurations, for a mixed internal–external compression system, are studied by using their respective aerothermodynamic parameters of system’s performance. The results obtained by this method quantitatively agree with the order-of-merit solution obtained from weighted matrix method. Sensitivity analysis also demonstrates robustness and stability of the method.

Keywords:
Decision method
DF-APSO method
Difference and fractional parameters
Figure-of-merit
Aerothermodynamics
Highly-integrated forebody–inlet configurations

Published in: Aerospace Science and Technology  (Volumes 27, Issue 1, June 2013)

Publisher: Elsevier

ISSN Information: 1270-9638

A difference-fractional FOM decision method for down-selection of hypersonic compression system configurations

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