The effects of tip clearance on the overall and blade-element performance of an axial-flow transonic fan stage are presented. The 50-centimeter-diameter fan was tested at four tip clearances (nonrotating) from 0.061 to 0.178 centimeter. The calculated radial growth of the blades was 0.040 centimeter at design conditions. The decrease in overall stage performance with increasing clearance is attributed to the loss in rotor performance. For the rotor the effects of clearance on performance parameters extended to about 70 percent of blade span from the tip. The stage still margin based on an assumed operating line decreased from 15.3 to 0 percent as the clearance increased from 0.061 to 0.178 centimeter.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Rotor tip clearance effects on overall and blade-element performance of axial-flow transonic fan stage


    Contributors:

    Publication date :

    1982-09-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English