Invention Grant
- Patent Title: High compressor build clearance reduction
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Application No.: US15343470Application Date: 2016-11-04
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Publication No.: US10443543B2Publication Date: 2019-10-15
- Inventor: John P. Virtue, Jr. , Rishon Saftler , Frederick M. Schwarz
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: F01D19/02
- IPC: F01D19/02 ; F02K3/068 ; F02K3/075 ; F04D29/64 ; F01D11/18 ; F02K3/02 ; F02K3/06 ; F01D19/00 ; F01D25/16 ; F01D25/36 ; F02C7/26 ; F02C7/32 ; F02C9/42 ; F02K3/11 ; B64D27/00

Abstract:
An aspect includes a system including a high compressor of a gas turbine engine having a ratio of a cold-rotor build clearance to a span between 0.7% and 7%. The cold-rotor build clearance is defined for a plurality of rotor blades of the high compressor with respect to an engine casing assembly interior surface of the high compressor, and the span is defined as a gap between a rotor disk of the high compressor and the engine casing assembly interior surface of the high compressor for at least a last two stages of the high compressor closest to a combustor section of the gas turbine engine. The system also includes at least two bowed rotor management systems for the gas turbine engine to prevent damage to the rotor blades for a bowed rotor condition of the high compressor under a plurality of operating conditions.
Public/Granted literature
- US20180230946A1 HIGH COMPRESSOR BUILD CLEARANCE REDUCTION Public/Granted day:2018-08-16
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