METHOD, SYSTEM, AND APPARATUS FOR REDUCING A TURBINE CLEARANCE

摘要

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.

主权项

1. 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, said method comprising:
determining, with a flight operation controller, that an airplane is in a first flight condition; adjusting the turbine clearance gap to a first clearance gap distance associated with the first flight condition; determining, with the flight operation controller, a demand for a second flight condition; adjusting an engine responsiveness to a first engine responsiveness level for a first predetermined change in a power parameter of the engine; 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.