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DESIGN OF A HIGH TEMPERATURE DUCT SYSTEM FOR A BLOWN FLAP WING
FAIRCHILD STRATOS CORP HAGERSTOWN MD
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This report presents the design criteria and procedures used in the design of a duct system to convey the turbine exhaust of a jet engine to nozzles located at the top of the flap cove of a 200 sq ft wing having an aspect ratio of 8.4 and employing a single slot flap of 25 chord. The nozzles were designed to provide APPROXIMATELY 12.0 LBS. OF THRUST PER SQ FT OF WING AREA, WHICH IS SUFFICIENTLY LARGE THAT SUPERCIRCULATION WILL DEVELOP AT TAKE-OFF AND LANDING SPEEDS ASSOCIATED WITH A WING LOADING OF APPROXIMATELY 50 LBS.SQ. FT. Drawings of the duct system and a test stand for evaluating the duct system design are shown. Author
APPROVED FOR PUBLIC RELEASE