Exhaust nozzle assembly for a turbojet engine
AssigneeSociete Nationale d'Etude et de Construction de Meteur d'Aviation S.N.E.C.M.A.
InventorAndre A. M. L. Camboulives
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Abstract
An exhaust nozzle assembly for a turbojet engine is described wherein the position of a series of nozzle flaps is controlled by control levels interconnected with an actuating cylinder. The control levers are transversely interconnected in order to synchronize the movement of the flaps and to also permit variation in the transverse distance between adjacent control members. A linkage mechanism is also disclosed which permits the actuation of a second series of flaps from the interconnected control members.
Claims19
In a turbojet engine having an annular exhaust gas outlet duct with a central longitudinal axis, the improved exhaust nozzle assembly comprising:
- (a) a plurality of hook members attached to the outlet duct and distributed evenly about the circumference of the outlet duct each hook member defining a generally "U" shaped slot extending across the width of the hook member, each generally "U" shaped slot having a first surface extending generally perpendicular to the central longitudinal axis and an adjacent second surface extending generally perpendicular to the first surface;
- (b) a plurality of first nozzle flaps distributed about the circumference of the outlet duct;
- (c) a journal shaft having two adjacent perpendicular surfaces, the length of the journal shaft exceeding the width of the hook members;
- (d) attachment means to attach a journal shaft to each hook member such that the perpendicular surfaces on the shaft contact the first and second surfaces of the hook member slot;
- (e) cylindrical bearing means on each end of the journal shaft;
- (f) a plurality of control lever members operatively connected to selected nozzle flaps and pivotally attached to the cylindrical bearing means such that each control lever member pivots about an axis extending generally perpendicular to the central longitudinal axis;
- (g) ball joint means interconnecting adjacent control lever members so as to synchronize the movement of the control lever members and to permit variation in the distance between adjacent control lever members as they pivot about their axes;
- and,
- (h) a plurality of control cylinder means each having a stationary portion attached to the outlet duct and a movable portion attached to a control lever member such that the angle of the nozzle flaps with respect to the central longitudinal axis may be adjusted.
Dependencies are inferred from the claim text.