The improved aerodynamic efficiency of the aircraft J35 Draken resulting from simple leading edge modifications is evaluated. The study was carried out using earlier wind tunnel data and the actual data of installed thrust and fuel consumption of the jet engine. Improvements in important performance aspects comparable to what could have been achieved by installing a modern jet engine, but at a fraction (probably less than 5 pct.) of the cost switching to a new engine as achieved. A significant improvement in pitch and roll stability in relation to the characteristics of the original aircraft was also achieved. Apart from the obvious tactical value of upgrading the performance (range, maneuver and external load) there comes the added peacetime benefit of a 25 pct. fuel cost reduction for a given training program.


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    Title :

    Performance Improvements and Fuel Cost Savings Due to Leading Edge Modification of a Vintage delta Wing Jet Fighter


    Contributors:
    S. Ridder (author)

    Publication date :

    1991


    Size :

    29 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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