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Record 71 of 5599
F-18 HARV in flight refueling with KC-135 tanker
NIX Online Source: Click to View Photo/Image
Abstract: A thrust vectoring system can be seen mounted on the aft end of this NASA F-18 research aircraft at the Dryden Flight Research Center, Edwards, California, during an inflight refueling stop with a KC-135A (Serial #55-3135) tanker. The system was used to enhance its maneuverability and control at high angles of attack (high alpha) when conventional aerodynamic controls - ailerons, rudders, and elevators - are ineffective. The system features three spoon-shaped paddles mounted around the exhaust nozzles of each engine. The system, linked to the aircraft's flight control system, moves the paddles into the exhaust flow to redirect thrust for directional control and increased maneuverability at angles of attack near 70 degrees. First research flights with the system operating began during the spring of 1991. Data from the F-18 High Alpha Research Vehicle (HARV) program produced information to validate computer codes and wind tunnel results and led to design methods providing better performance in future aircraft.
Publication Date: Nov 01, 1995
NIX (Document) ID:
(Acquired Aug 02, 2006)
Document Type: Photograph
Publication Information: The Armstrong Photo Gallery includes the latest images from the NASA Armstrong Flight Research Center as well as the legacy photos from the Dryden Flight Research Center.
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