Brian J Drummond

US Patent:

20190203646, Jul 4, 2019

Filed:

Jan 4, 2018

Appl. No.:

15/861780

Inventors:

- Schenectady NY, US
Charles Stanley Orkiszewski - Cincinnati OH, US
Milind Chandrakant Dhabade - Bangalore, IN
Praveen Sharma - Bangalore, IN
Brian Drummond - Swampscott MA, US
Shivam Mittal - Bangalore, IN

International Classification:

F02C 7/275
F02N 5/02
F16D 43/14
F01D 19/02

Abstract:

The present disclosure is directed to a gas turbine engine structure and method for reducing or mitigating bowed rotor. The method includes coupling a rotor assembly to a mechanical energy storage device via a clutch mechanism when the rotor assembly is at or below a speed limit below an idle speed condition; storing mechanical energy at the mechanical energy storage device via rotation of the rotor assembly at or below the speed limit; releasing mechanical energy from the mechanical energy storage device to rotate the rotor assembly following shutdown of the gas turbine engine; and rotating the rotor assembly via the mechanical energy from the mechanical energy storage device.

US Patent:

20190162203, May 30, 2019

Filed:

Nov 27, 2017

Appl. No.:

15/822507

Inventors:

- Schenectady NY, US
Praveen Sharma - Bangalore, IN
Shashank Suresh Puranik - Bangalore, IN
Shivam Mittal - Bangalore, IN
Charles Stanley Orkiszewski - Cincinnati OH, US
Carl Lawrence MacMahon - Cincinnati OH, US
Anthony Michael Metz - Harrison OH, US
Brian Drummond - Swampscott MA, US

International Classification:

F04D 29/58
F02C 3/13
F04D 29/40
F01D 25/14

Abstract:

Embodiments are generally provided of a gas turbine engine including a rotor assembly comprising a shaft extended along a longitudinal direction, in which a compressor rotor and a turbine rotor are each coupled to the shaft; a casing surrounding the rotor assembly, in which the casing defines a first opening radially outward of the compressor rotor, the turbine rotor, or both, and a second opening radially outward of the compressor rotor, the turbine rotor, or both; a first manifold assembly coupled to the casing at the first opening; a second manifold assembly coupled to the casing at the second opening, in which the first manifold, the casing, and the second manifold together define a thermal circuit in thermal communication with the rotor assembly; and a fluid flow device in fluid communication with the first manifold assembly, in which the fluid flow device provides a flow of fluid to the first manifold assembly and through the thermal circuit, and further wherein the flow of fluid egresses the thermal circuit at the second manifold assembly.