Study of External Dynamic Flap Loads on a 6 Percent B-1B Model

[+] Author and Article Information
J. M. Seiner, J. C. Manning, F. J. Capone, O. C. Pendergraft

NASA Langley Research Center, Hampton, VA 23665

J. Eng. Gas Turbines Power 114(4), 816-828 (Oct 01, 1992) (13 pages) doi:10.1115/1.2906662 History: Received March 04, 1991; Online April 24, 2008


The origin of dynamic pressure loads on external divergent engine nozzle flaps of the B-1B aircraft was investigated in the NASA/LaRC 16-ft transonic tunnel using a 6 percent full-span model with powered engine nacelles. External flap dynamic loads and afterbody drag associated with flap removal were measured using this model. Both dry and maximum A/B power nozzles were evaluated in this study. As a result of this study, the principle mechanisms responsible for high dynamic external flap loads were determined along with performance penalty associated with flap removal.

Copyright © 1992 by The American Society of Mechanical Engineers
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