General Electric Company

Ai Alpine US Bidco Inc.

Souvik Math

Ravindra Shankar Ganiger

Duane Howard Anstead

Pradeep Hemant Sangli

Mandyam Rangayan Sridhar

Santosh Kumar Prasad

Arundhati Sengupta

Hombe Gowda

Savio Sebastian Kathayanatt

Arman Mohammad Khan

Matthew D Brothers

Krishnanand Venkatasubramanian

Muralikrishna Rangharajhan

Harsha Kikkari Anantha Rao

Praveen Holani

A bearing assembly includes a bearing, an outer race located radially outward of the bearing and supporting the bearing, a bearing housing located radially outward of the outer race and supporting the bearing and the outer race, and a bearing lubricant drain including a multi-directional passage formed in one or both of the outer race or the bearing housing, the lubricant drain arranged to cause a lubricant to flow from a first location to a second location. The second location is radially outward and axially offset from the first location. A gas turbine engine includes a shaft configured to rotate about a centerline axis of the gas turbine engine and the bearing assembly configured to facilitate the rotation of the shaft.

Bearing lubricant drain

Oleophobic and/or oleophilic coatings to reduce heat loads on a gas turbine engine thermal management system are disclosed herein. An example method to reduce heat load in a gas turbine engine, the method including applying an oleophobic coating to an internal wall of a sump, the sump located in proximity to a heat generating element of the gas turbine engine, and applying an oleophilic coating to the heat generating element of the gas turbine engine.

Methods and apparatus for thermal management of sumps using oleophilic and oleophobic coatings

Oleophobic and/or oleophilic coatings to reduce heat loads on a gas turbine engine thermal management system are disclosed herein. An example method to reduce heat load in a gas turbine engine includes applying an oleophobic coating to an internal wall of a sump, the sump located in proximity to a heat generating element of the gas turbine engine, and applying an oleophilic coating to the heat generating element of the gas turbine engine, the heat generating element positioned in a cavity of the sump.

A method () includes executing a wear protocol to derive a start-stop (SS) wear, a steady-state operating hours (OH) wear, or a combination thereof, of a test journal bearing system (). The method () further includes observing operations of an engine () via one or more sensors to determine a number of start-stops, steady-state operating hours, or a combination thereof. The method () also includes determining a determined journal bearing system wear () based on applying a physics-based model () of a journal bearing system () and the transfer function to the number of start-stops, the steady-state operating hours, or to the combination thereof. The method () additionally includes executing one or more actionable items () on the engine () based on the determined journal bearing system wear ().

System and method for improved journal bearing operations

Growing community of inventors

Bengaluru, India

Souvik Math