United Technologies Corporation

Raytheon Technologies Corporation

Stanley Wiecko

Eugene C Gasmen

Bernard W Pudvah

Christopher St Mary

An assembly for operating a device, such as a variable vane, has an arm, a stem to which the arm is connected, the stem having a slot, and a member having a tab which fits into the slot.

Vane arm assembly

An exemplary variable vane actuation system for a gas turbine engine includes a vane arm attachable to a vane stem and configured to rotate the vane stem about a radially extending axis. The vane arm includes a claw feature to be press-fit onto the vane stem.

Vane arm having a claw

An exemplary variable vane actuation system includes, among other things, a vane arm with a vane stem contact surface and a radially outward facing surface. The vane stem contact surface is to contact a vane stem of a variable vane and thereby actuate the variable vane about a radially extending axis. The vane stem contact surface is angled relative to both the radially extending axis and the radially outward facing surface.

Machined vane arm of a variable vane actuation system

An actuator system mounted to a gas turbine engine that communicates mechanical power for positioning variable guide vanes within the gas turbine engine. The actuator system includes a torque box having components for communicating mechanical power to the variable guide vanes for positioning the vanes and an actuator mechanically coupled to provide mechanical power to the components of the torque box used to communicate the provided mechanical power to the inlet guide vanes. The actuator is mounted to the torque box via an elongate fastener extending in one direction and another elongate fastener extending in another direction.

Actuator mounted to torque box

An actuator system mounted to a gas turbine engine that communicates mechanical power for positioning variable guide vanes within the gas turbine engine. The actuator system includes a torque box having components for communicating mechanical power to the variable guide vanes for positioning the vanes and an actuator mechanically coupled to provide mechanical power to the components of the torque box used to communicate the provided mechanical power to the inlet guide vanes. The actuator is mounted to the torque box via a plurality of bolts.

A gas turbine engine includes a synchronizing ring. A cradle includes an integrally formed anti-rotation feature. The cradle is secured to the synchronizing ring and located relative thereto with the anti-rotation feature. A bumper is slidably supported within the cradle. In one example, a bushing is provided within a hole in the bumper. A fastener is inserted into the hole and a bushing to secure the bumper to the synchronizing ring.

Gas turbine engine synchronizing ring bumper

A synchronizing assembly for a gas turbine engine includes a synchronizing ring. A composite bumper is secured to the synchronizing ring by a fastener. A structure is arranged between the bumper and the synchronizing ring. The fastener applies a first load through the structure to the synchronizing ring and a second load through the bumper. The second load is substantially less than the first load. In one example, the structure includes a bushing that extends through a hole in the bumper. The bushing is proud of the hole on the other side of the bumper and protrudes into the counterbore. The fastener is arranged in the bushing and applies a clamping load through the bushing to secure the bumper to the synchronizing ring.

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Newington, CT, United States of America

Stanley Wiecko