A model airplane descends in a vertical dive through air at standard conditions (1 atmosphere and 20C).

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A model airplane descends in a vertical dive through air at standard conditions (1 atmosphere and 20°C). Th e majority of the drag is due to skin friction on the wing (like that on a flat plate). The wing has a span of 1 m (tip to tip) and a chord length (leading edge to trailing edge distance) of 10 cm. The leading edge is rough, so the turbulent boundary layer is “tripped.” The model weighs 3 N. Determine the speed (in meters per second) at which the model will fall.

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Engineering Fluid Mechanics

ISBN: 9781118880685

11th Edition

Authors: Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson

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