Flow in a generic ventral nozzle system was studied experimentally and analytically with the PARC3D computational fluid dynamics program in order to evaluate the program's ability to predict system performance and internal flow patterns. A generic model of a tailpipe with a rectangular ventral nozzle, about 1/3 of full size, was tested with unheated air at steady state pressure ratios up to 4.0. The end of the tailpipe was closed to simulate a blocked exhaust nozzle. Flow behavior into and through the ventral duct is discussed and illustrated with paint streak flow visualization photographs. PARC3D graphic images are shown for comparison with the experimental photographs. The program successfully predicted internal flow patterns; it also computed thrust and discharge coefficients within 1 pct. of measured values.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Flow studies in close-coupled ventral nozzles for STOVL aircraft


    Contributors:

    Conference:

    Aerospace Atlantic Conference ; 1990 ; Dayton, OH, United States


    Publication date :

    1990-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Flow Studies in Close-Coupled Ventral Nozzles for STOVL Aircraft

    Smith, C. Frederic / McArdle, Jack G. | SAE Technical Papers | 1990




    Analysis of internal flow in a ventral nozzle for STOVL aircraft

    Smith, C. Frederic / Mcardle, Jack G. | NTRS | 1990