An Update of the Canada/U.S.A. Augmentor-Wing Project
DE HAVILLAND AIRCRAFT OF CANADA LTD DOWNSVIEW (ONTARIO)
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This paper presents some views of a practitioner from the perspective of powered lift in which a substantial proportion of engine thrust is devoted to augmentation of wing lift. As such, control of the boundary layer takes place in rather a macroscopic way due largely to entrainment of secondary flow into a powerful jet or jet sheet. The Augmentor-Wing powered life concept has been the subject of investigation jointly by Canada and the United States since the late sixties. Following extensive tests of a half scale mode inthe NASA, Ames 40 x 80 wind tunnel, a decision was made to design and build a minimum cost flight demonstrator based on the de Havilland Buffalo airframe. This technology demonstrator aircraft first flew in 1972 and subsequently underwent trials at NASA, Ames, accumulating a total of 650 flying hours. Following completion of the NASA trails in 1980, work has continued in Canada covering four main areas of interest additional flight trials on the technology demonstrator aircraft, propulsion system development, experimental investigation of a new compound supercritical airfoil, and project definition studies.