Invention Application
US20160311546A1 METHOD, SYSTEM, AND APPARATUS FOR REDUCING A TURBINE CLEARANCE 有权
用于减少涡轮机间隙的方法,系统和装置

METHOD, SYSTEM, AND APPARATUS FOR REDUCING A TURBINE CLEARANCE
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.
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