Extendable/retractable airfoil assembly for fixed wing aircraft

Details Extendable/retractable airfoil assembly for fixed wing aircraft Extendable/retractable airfoil assembly for fixed wing aircraft

B - Operations, Transporting

64

C

B64C 3/54 (2006.01)

Patent

CA 2284979

A retractable airfoil assembly (20) augments the wing surface area (28) of an aircraft (22) enabling it to fly without stalling at reduced speeds during takeoff and landing. The airfoil assembly includes flexible sails (42, 44) and a furling mast (24) for extending and retracting the sails. The furling mast includes a furling drum (52) mounted for clockwise and counterclockwise rotation on a static tube (50). The flexible sail assembly also includes guide tracks (80) located along a leading edge (101) or trailing edge (40) of the wings. The tracks guide the flexible sails during extension and retraction. A drive cable (26) extends and retracts the sails (42, 44) along the guide tracks and maintains tension in the sails while they are extended.

Un ensemble surface portante rétractable (20) augmente la surface alaire (28) d'un avion (20), lui permettant de voler sans décrochage à des vitesses réduites pendant le décollage et l'atterrissage. L'ensemble surface portante comprend des voiles flexibles (42, 44) et un mât de ferlage (24) destiné à déployer et à rétracter les voiles. Le mât de ferlage comprend un tambour de ferlage monté pour tourner dans le sens des aiguilles d'une montre et inversement sur un tube statique (50). L'ensemble voiles flexibles comprend également des rails de guidage (80) situés le long d'un bord d'attaque (101) ou d'un bord de fuite (40) des ailes. Les rails guident les voiles flexibles pendant leur déploiement et leur enroulement. Un câble de commande (26) déploie et rétracte les voiles (42, 44) le long des rails de guidage et maintient les voiles tendues lorsqu'elles sont déployées.

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