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.


    Access

    Download


    Export, share and cite



    Title :

    High compressor build clearance reduction


    Contributors:

    Publication date :

    2019-10-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / F02K JET-PROPULSION PLANTS , Strahltriebwerke / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



    HIGH COMPRESSOR BUILD CLEARANCE REDUCTION

    VIRTUE JR JOHN P / SAFTLER RISHON / SCHWARZ FREDERICK M | European Patent Office | 2018

    Free access

    Compressor Clearance Control Coatings

    Bolin, E. L. / Hamilton, P. E. | SAE Technical Papers | 1970


    Radical clearance analysis on the high pressure compressor

    Yang, YU / Qiaoying, LIU / Beiyi, SHEN et al. | AIAA | 2012


    RADICAL CLEARANCE ANALYSIS ON THE HIGH PRESSURE COMPRESSOR

    Yu, Y. / Liu, Q. / Shen, B. et al. | British Library Conference Proceedings | 2012