Engineering, 17.12.2021 02:30 caromaybelline71
The drag characteristics of an airplane are to be determined by model tests in a wind tunnel operated at an absolute pressure of 1300 kPa. If the prototype is to cruise in standard air at 412 km/hr, and the corresponding speed of the model is not to differ by more than 21% from this (so that compressibility effects may be ignored), what range of length scales may be used if Reynolds number similarity is to be maintained
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