externally blown flap

externally blown flap

A flap in the wake of the main engines when deflected. Such flaps are more effective, especially in the generation of lift. See blown flap.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
This wide speed range implied the use of jet lift for stol, as explored with the Boeing YC-14 (using upper surface blowing) and McDonnell Douglas YC-15 (with externally blown flaps) in the US Air Force's Advanced Medium Stol Transport (Amst) programme of the mid-1970s.