Takeoff predictions for powered lift short takeoff (STO) aircraft have been added to NASA Ames Research Center's aircraft synthesis (ACSYNT) code. The new computer code predicts the aircraft engine and nozzle settings required to achieve the minimum takeoff roll. As a test case, it predicted takeoff around rolls and nozzle settings for the YAV-8B Harrier that were close to the actual values. Analysis of takeoff performance for an ejector-augmentor design and a vectoring-nozzle design indicated that ground roll can be decreased, for either configuration, by horizontally moving the rear thrust vector closer to the center of gravity, by increasing the vertical position of the ram drag-vector, or by moving the rear thrust vector farther below the center of gravity.


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    Title :

    Takeoff predictions for powered-lift aircraft


    Contributors:

    Publication date :

    1986-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Takeoff predictions for powered-lift aircraft

    Wardwell, Douglas A. / Sandlin, Doral R. | NTRS | 1988


    Takeoff Predictions for Powered-Lift Aircraft

    Hahn, Andrew S. / Sandlin, Doral R. / Wardwell, Douglas A. | SAE Technical Papers | 1986


    Takeoff Predictions for Powered-Lift Aircraft

    D. A. Wardwell / D. R. Sandlin | NTIS | 1988