초록 ▼

A variable turbofan bypass cowling includes a movable cowling assembly (12) with pivoting door type thrust reversers (20) connected to a fixed upstream cowling structure (11). The movable assembly may be translated between an upstream position whereat an upstream portion of the reverser and cowling

A variable turbofan bypass cowling includes a movable cowling assembly (12) with pivoting door type thrust reversers (20) connected to a fixed upstream cowling structure (11). The movable assembly may be translated between an upstream position whereat an upstream portion of the reverser and cowling assembly (12) is housed inside an enclosure formed by the upstream cowling structure (11) and a downstream position whereat the assembly (12) effects a variation in the exhaust duct (17) cross-section between an inner primary turbojet-engine cowling (15) and a radially inner wall of the assembly (12). The reverser doors (20) in their closed position are integrated into the cowling wall and contain at least part of the exhaust flow. When pivoted to thrust reversed positions following translation of the assembly (12) to a downstream rearward position, thrust reversal is provided in the usual manner.

대표청구항 ▼

[ We claim:] [1.] A variable fan exhaust duct and thrust reverser arrangement for a turbofan-type aircraft engine comprising:a fan and engine outer cowling including pivoted thrust reverser doors, said cowling defining, with an outer surface of an inner primary engine cowling, a fan exhaust duct, sa

[ We claim:] [1.] A variable fan exhaust duct and thrust reverser arrangement for a turbofan-type aircraft engine comprising:a fan and engine outer cowling including pivoted thrust reverser doors, said cowling defining, with an outer surface of an inner primary engine cowling, a fan exhaust duct, said outer cowling including a fixed forward section and a rearward assembly movable longitudinally between forwardmost and rearwardmost positions;said reverser doors having inner and outer surfaces and being pivotally mounted on said rearward assembly for movement between a forward thrust position whereat at least a portion of the outer surfaces of the doors form at least part of the outer contour of the rearward assembly of the outer cowling and the inner surfaces form part of the exhaust duct, and a reversed thrust position whereat the pivoted doors clear reverse thrust openings in the rearward assembly of the outer cowling and deflect exhaust from the exhaust duct through the reverse thrust openings with a forward component;said fixed forward section defining an enclosure and said doors being located at least in part in said enclosure when the rearward assembly is located at its forwardmost position, and being located completely clear of said enclosure when the rearward assembly is located at its rearwardmost position;the cross-sectional configuration of said exhaust duct being varied upon motion of said rearward assembly between said forwardmost and rearwardmost positions.