Invention Grant
- Patent Title: Method, system, and apparatus for reducing a turbine clearance
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Application No.: US15077731Application Date: 2016-03-22
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Publication No.: US09758252B2Publication Date: 2017-09-12
- Inventor: Sridhar Adibhatla , Steven Edward Nolte , Gerhard Walter Moeller , Christopher Timothy Gallagher , John William Hanify , Grant Alan Ingram
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: General Electric Company
- Agent Pamela A. Kachur
- Main IPC: B64D31/06
- IPC: B64D31/06 ; F01D11/24

Abstract:
A method for reducing a turbine clearance gap between a plurality of rotor blades of a turbine engine and a shroud of the turbine engine is provided. The method includes determining that an airplane is in a first flight condition, and adjusting the turbine clearance gap to a first clearance gap distance associated with the first flight condition. The method also includes determining a demand for a second flight condition, and adjusting an engine responsiveness to a first engine responsiveness for a first predetermined change in a power parameter of the engine. The method further includes reducing the engine responsiveness from the first engine responsiveness level to a second engine responsiveness level for a second predetermined change in the power parameter of the engine, and closing a clearance control valve associated with the shroud during the second predetermined change in the power parameter of the engine.
Public/Granted literature
- US20160311546A1 METHOD, SYSTEM, AND APPARATUS FOR REDUCING A TURBINE CLEARANCE Public/Granted day:2016-10-27
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