超音速風洞での空力係数の不確かさ

概要

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To estimate uncertainties of wind tunnel test data, it is necessary to characterize tunnel flow qualities. Thus at a supersonic wind tunnel, the flow fields were assessed by Mach numbers calculated from total pressures, test section pitot and wall pressures. Furthermore, for easy and accurate estimations of the uncertainties, end to end error evaluations should be done with appropriate treatments of small error contributors. The uncertainties about a model weight correction were then evaluated from no-wind actual end data. The flow field error propagations were also examined and the uncertainties of each component of aerodynamic coefficients were treated as the independent error contributors. The estimated uncertainties were finally validated by data obtained repeatedly in short and long terms with flow field variations.
社団法人日本航空宇宙学会の論文
2006-11-05