blown flap

(redirected from Boundary layer control system)

blown flap

blown flap
A flap over which air is discharged to prevent boundary-layer separation and to improve the performance of the flap. Air is blown over the upper surface of the flap only. The efficiency of the system depends on the quantum and the speed of blown air.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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