B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
114/20, 244/35
B64C 21/04 (2006.01) B64C 9/38 (2006.01)
Patent
CA 1316516
ABSTRACT An aerofoil or hydrofoil (1) has means (2) for providing a high velocity jet of fluid directed from a nozzle (3) in a direction having a component of velocity in the same direction as the required direction of lift (L); a curved surface (5) convex on the side of the aerofoil or hydrofoil which is in the direction of the required lift, and which serves to direct the velocity of the jet in a direction which is substantially opposite to the direction of the required lift or thrust force, the primary jet being directed over the convex surface for attachment thereto; and a duct formed over a rear part of the convex surface remote from the nozzle, whereby the primary jet of fluid flowing over and attached to the convex surface causes an enhanced flow through the duct, the duct being directed at least at its exit end in a direction so that the flow therethrough has a component of velocity opposite that of the required direction of lift.
568363
Borden Ladner Gervais Llp
British Aerospace Plc
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