Uncertainty Identification of Supersonic Wind-Tunnel Testing

In this study, a methodology for identification of uncertainty is developed, which have been empirically estimated by multifacility wind-tunnel testing. Instead of this multifacility testing, multiposition testing was performed across a characteristics mesh of supersonic flow. From the variations in aerodynamic coefficients in body axes, the uncertainty caused by flow quality is identified about models of interest. The identified uncertainty is almost dominated by characterization of tunnel flow quality. Then, after consideration of practically independent parameters, uncertainties of aerodynamic coefficients in stability axes are estimated by combining the identified uncertainties in body axes. Their validities are confirmed by correlation results of tunnel-to-tunnel comparison tests.