Results of steady-state reverse and forward-to-reverse thrust transient performance tests are presented. The original QCSEE 4-segment variable fan nozzle was retested in reverse and compared with a continuous, 30-deg half-angle conical exlet. Data indicated that the significantly more stable, higher pressure recovery flow with the fixed 30-deg exlet resulted in lower engine vibrations, lower fan blade stress and approximately a 20% improvement in reverse thrust. Objective reverse thrust of 35% of takeoff thrust was reached. Thrust response of less than 1.5 sec was achieved for the approach and the takeoff-to-reverse thrust transients.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Reverse thrust performance of the QCSEE variable pitch turbofan engine


    Contributors:

    Conference:

    Aerospace Congress and Exposition ; 1980 ; Los Angeles, CA


    Publication date :

    1980-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Reverse thrust performance of the QCSEE variable pitch turbofan engine

    Samanich, N. E. / Reemsnyder, D. C. / Blodmer, H. E. | NTRS | 1980


    Reverse Thrust Performance of the QCSEE Variable Pitch Turbofan Engine

    Reemsnyder, D. C. / Bloomer, H. E. / Samanich, N. E. | SAE Technical Papers | 1980


    QCSEE UTW engine powered-lift acoustic performance

    Loeffler, I. J. / Samanich, N. E. / Bloomer, H. E. | NTRS | 1980


    QCSEE UTW engine powered-lift acoustic performance

    LOEFFLER, I. / SAMANICH, N. / BLOOMER, H. | AIAA | 1980