blown-boundary-layer control

blown-boundary-layer control

Flow pattern without boundary layer control.

Flow pattern after high-velocity air is blown over the airfoil.

A system in which the blown boundary layer uses high-velocity air blown through ducts or jets to energize the boundary layer on the upper surface of the wing at low speeds, especially during approach and landing to keep the boundary layer from detaching from the wing surface.

An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved