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09/30/2007. This aircraft was built to the Experimental Requirement Specification ER.189D for a single-seat jet-flap research aircraft. The exhaust efflux of the engine is ducted to the trailing edge of the wing and ejected through a narrow slit, providing propulsion and a jet-flap when deflected downward. Powered by a Bristol Siddeley Orpheus turbojet, the aircraft was flown for the first time on March 26, 1963. |
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