A bushing includes cylindrical body depending from preferably annular polygonal flange, bore extending through flange and body, and at least one overload indicator. Overload indicator may be frangible such as frangible tab at distal end of indicator tab depending from body or frangible coupons extending between forward and aft sections of polygonal flange. Frangible tab and coupons may include distinctive mark discernible or visible under visible or ultraviolet light. Bushing may be used in unison ring of high pressure compressor assembly to connect lever arms, coupled to variable vanes, to unison ring. Pins disposed in bore of bushing couple arm to unison ring. Forward and aft overhangs may depend from forward and aft sections of polygonal flange and overhang forward and aft annular sides of unison ring.


    Access

    Download


    Export, share and cite



    Title :

    Variable stator vane actuator overload indicating bushing


    Contributors:

    Publication date :

    2020-08-25


    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 / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



    Solar vane actuator Patent

    Acord, J. D. / Nicklas, J. C. | NTRS | 1967


    Electronic Overload Indicating System for Mobile Construction Cranes

    Jones, William H. | SAE Technical Papers | 1971


    Cantilevered stator vane tip leakage studies

    ADAMS, N. / HEPWORTH, H. | AIAA | 1985


    Variable-pitch vane

    FABRE ADRIEN / LAURENCEAU ADRIEN / VLASTUIN JONATHAN | European Patent Office | 2019

    Free access

    Modeling of a Unique High-Temperature Turbine Engine Variable Guide Vane Actuator

    Caspermeyer, Matt / Shields, David / Jansen, Harvey et al. | AIAA | 2008