United Technologies Corporation

Raytheon Technologies Corporation

Dwayne E Messerschmidt

Robert E Peters

Larry W Spires

J Axel Glahn

Roger M Barnsby

Kenneth L Allard

Christopher T Anglin

Todd M Gaulin

Christopher M Valva

Hsianmin Jen

Hslanmin F Jen

Russell B Witlicki

Yuk-Kwan Brian Yuen

Axel J Glahn

A seal assembly for a bearing compartment of a gas turbine engine includes a seal carrier, a seal element, a seal plate, and a trough. At least a portion of the seal element is within the seal carrier. The seal plate is in contact with the seal element and is configured to rotate relative to the seal element. The trough extends around the seal plate and comprises an annular channel positioned to capture oil slung from the seal plate.

Oil control for seal plates

A towershaft support may comprise a mount support, and a mounting ring coupled to an aft portion of the mount support radially inward of the mount support, wherein the mounting ring and the mount support create a perimeter around a central void. The mounting ring may comprise a mounting flange on an outer diameter of the mounting ring and a fluid passageway on an inner diameter of the mounting ring fixedly coupled to the mounting flange, wherein the fluid passageway comprises an outer wall enclosing an internal passage configured to pass fluid therethrough.

Towershaft support

The present disclosure relates generally a system for preventing relative rotation between three components. The three components include tabs and slots such that at least one first tab and at least one second tab on one component is disposed within at least one slot formed in the other two components to prevent relative rotation between any two of the three components.

Gas turbine engine coupling stack

An oil scavenge system includes a tangential scavenge scoop and a settling area adjacent thereto which separately communicate with a duct which feeds oil into an oil flow path and back to an oil sump. A shield is mounted over the settling area to at least partially shield the collecting liquid oil from interfacial shear. A multiple of apertures are located through the shield to permit oil flow through the shield and into the duct. The scavenge scoop forms a partition which separates the duct into a first portion and a second portion. The first portion processes upstream air/oil mixture that is captured by the tangential scoop while the second portion receives the oil collected in the settling area.

Bifurcated oil scavenging bearing compartment within a gas turbine engine

Method of scavenging oil within a gas turbine engine

Bifurcated oil scavenge system for a gas turbine engine

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Columbia, CT, United States of America

Dwayne E Messerschmidt