公开(公告)号：FR2557209A1

公开(公告)日：1985-06-28

申请号：FR8419262

申请日：1984-12-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LAURELLO VINCENT PAUL

IPC: F01D11/08 ,  F01D9/04 ,  F01D11/24 ,  F02C7/28

公开(公告)号：DE2654300A1

公开(公告)日：1977-06-08

申请号：DE2654300

申请日：1976-11-30

Applicant: UNITED TECHNOLOGIES CORP

Inventor： REDINGER JUN IRA HENRY ,  SADOWSKY DAVID ,  STRIPINIS PHILIP STANLEY ,  LAURELLO VINCENT PAUL

IPC: F01D11/08 ,  F01D11/10 ,  F01D11/24 ,  F02C7/12

Abstract: The clearance between the outer air seal of a gas turbine engine and the tip of the turbine rotor is controlled by selectively turning on and off or modulating the cool air supply which is directed in proximity to the air seal supporting structure so as to control its thermal growth. The cooling causes shrinkage thereby holding the clearance low and effectively reducing fuel consumption.