초록 ▼

A vectorable propulsion nozzle has first and second ducts 10, 16 attached to each other by gimbal attachment means 18 to allow universal swivelling of vectoring in any lateral direction. The second duct 16 comprises a supporting ring 28 which has a plurality of guide means 36 in which arcuate ribs 4

A vectorable propulsion nozzle has first and second ducts 10, 16 attached to each other by gimbal attachment means 18 to allow universal swivelling of vectoring in any lateral direction. The second duct 16 comprises a supporting ring 28 which has a plurality of guide means 36 in which arcuate ribs 41 are slidably mounted. Each rib 41 is formed integrally with a master flap 38 which together with slave flaps 44 define the geometry and outlet area of the nozzle. To facilitate varying the throat area of the nozzle the flaps 38, 44 are moved bodily along the guide means by actuators. The area of the nozzle can thus be altered independently of the swivelling of the second duct 16. The supporting ring 28 also has formed therein a plurality of openings 30 for thrust reversing which are uncovered when reverser doors 32 are deployed.

대표청구항 ▼

A vectorable variable area propulsion nozzle for a gas turbine aero-engine, the nozzle comprising a first duct having a longitudinal axis, a second duct having a longitudinal axis, a gimbal attachment means for connecting an upstream end of the second duct to a downstream end of the first duct there

A vectorable variable area propulsion nozzle for a gas turbine aero-engine, the nozzle comprising a first duct having a longitudinal axis, a second duct having a longitudinal axis, a gimbal attachment means for connecting an upstream end of the second duct to a downstream end of the first duct thereby to allow universal swivelling of the second duct relative to the first duct so that the longitudinal axis of the second duct intersects the longitudinal axis of the first duct at a fixed swivel point when the second duct is swivelled, and a first actuator means operable on the second duct to swivel the second duct relative to the first duct, the second duct comprising a supporting ring which is free to swivel relative to the first duct but is constrained against rotation about its longitudinal axis by means of circumferentially spaced pivots, of the gimbal attachment means, the supporting ring having a plurality of guide means extending in a direction along the axis, there being a plurality of first flaps which define the geometry and outlet area of the nozzle and the flaps being provided with means which co-operate with the guide means to define a trackway along which the flaps can move bodily relative to the supporting ring thereby to vary the outlet area of the nozzle, and actuator means operable to move the flaps along the guide means.