LOW SPEED TESTING AND ANALYSIS

Authors

  • Fred Hermanspann Presented at the XXV OSTIV Congress in St. Auban, France

Keywords:

Aerodynamics, Design

Abstract

A flight test series was conducted to establish the low speed performance of a typical sailplane. The results are analyzed using a parametric drag build-up of the nondimensional data. Dynamic effects due to speed decrease on minimum speeds are correlated with delays in stall related effects of the upper wing boundary layer. The same effects also apply to the associated additional drag terms near stall. Parametric drag build-up allows better definition of low speed performance from sparse test data and facilitates performance calculations.

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Issue

Vol. 23 No. 4 (1999)

Section

Articles

License

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