General Electric Company

James Grooms

Randy M Vondrell

Charles William Carrier

Travis J Packer

Michael Alan Hile

Keith A Miedema

Jeffrey Scott Allen

Robert Lynn Kesecker

Methods, apparatus, systems, and articles of manufacture are disclosed to implement a stator plenum with collet seal. The stator plenum for a gas turbine engine includes an outer shell circumscribing a centerline axis, a first end of the outer shell coupled to an engine casing at a first coupling, the first coupling to form a first seal, a second end of the outer shell coupled to the engine casing at a second coupling, the second end formed by a thickened portion of the outer shell, the second coupling to form a second seal, and a cavity formed by the outer shell, the cavity to contain cooling flow to reduce a temperature of a turbine.

Stator plenum for a gas turbine engine

An example turbo engine includes a rotary hub and a propeller including a blade coupled to the rotary hub. The blade is rotatable about a radial axis to change a pitch of the blade. The turbo engine also includes a blade pitch actuation system including an actuator coupled to the blade. The actuator is moveable in a first direction to rotate the blade to a feather position and in a second direction to rotate the blade away from the feather position. The blade pitch actuation system also includes a hydraulic system to provide hydraulic fluid to one or more hydraulic chambers to move the actuator and a pressurized pneumatic chamber formed by a portion of the actuator. The pressurized pneumatic chamber biases the actuator in the first direction to move the blade to the feather position in an event of failure of the hydraulic system.

Turbo engine having blade pitch actuation system for variable pitch fan

Friction welding systems and methods including a welding arrangement configured to impart kinetic friction between at least one surface of a first workpiece and at least one surface of a second workpiece to form a weld, a force providing mechanism arranged and disposed for applying a force to one or both of the first workpiece and the second workpiece, and a sensor arranged and disposed to measure a parameter of the welding arrangement, wherein an amount of vibration is determinable from the measured parameter.

Friction weld vibration quality monitoring system and methods

A method and system for relieving forging induced residual stresses in a rotor forging balances a pre-spin machine with the forging mounted thereon at a first rotational speed and then pre-spins the forging with it mounted on the machine at a substantially greater second rotational speed. A one per rev sensor is used for determining a weight placement angle and a vibration sensor is used for determining an amount of weight to add to a spinning assembly including the forging during the balancing. High-density non-metallic balance weights adhesively attached on an inside surface of the forging or spinning assembly may be used. The rotational inertia of the spinning assembly may be checked during a spin up period by determining a rate of rotational acceleration vs. torque applied to the spinning assembly and used to stop the pre-spinning if it is to great.

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Fairfield Township, OH, United States of America

James Grooms