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US 10,519,898 B2Granted
Fan variable area nozzle for a gas turbine engine fan nacelle with sliding actuation system
AssigneeUnited Technologies Corporation
InventorRobert L. Gukeisen
Life of this patent
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Abstract
A linkage comprises a drive ring, a flap linkage mounted to each of a multiple of flaps and the drive ring, and an actuator system which drives the drive ring to cause the multiple of flaps to pivot. A method of driving a multiple of flaps is also disclosed.
Claims8
A linkage comprising:
- a drive ring divided into a multiple of drive ring segments, each drive ring segment including a separately movable flap set of a multiple of flaps;
- a flap linkage mounted to each of said multiple of flaps and said drive ring, each of said multiple of flaps including a hinge pivotally mounted to a nacelle along a circumferential hinge line;
- and
- an actuator system which drives said drive ring towards said circumferential hinge line to cause said multiple of flaps to pivot;
- wherein each segment of said multiple of drive ring segments is moveable between a first position and a second position relative to said circumferential hinge line;
- wherein said multiple of drive ring segments include a first segment and a second segment;
- and
- wherein an exit area inward of said multiple of flaps is asymmetrically adjusted in response to axially moving said first segment relative to said second segment.
5 more elements
A method of driving a multiple of flaps comprising the steps of:
- axially moving a drive ring;
- and
- pitching a flap assembly of a multiple of flaps between a first position and a second position to vary an exit area inward of the multiple of flaps, each of said multiple of flaps including a hinge pivotally mounted to a nacelle along a circumferential hinge line;
- and
- wherein said step of axially moving said drive ring includes axially moving a first segment of the drive ring relative to a second segment of the drive ring, asymmetrically adjusting the exit area, and moving the drive ring towards the circumferential hinge line.
2 more elements
Dependencies are inferred from the claim text.