A method of propulsion system sizing for mechanical flap and externally blown flap aircraft is demonstrated. Included in this study is the effect of various levels of noise suppression on the aircraft final design characteristics. Both aircraft are sized to operate from a 3000-ft runway and perform the same mission. For each aircraft concept, propulsion system sizing is demonstrated for two different engine cycles - one having a fan pressure ratio of 1.5 and a bypass ratio of 9 and the other having a fan pressure ratio of 1.25 and a bypass ratio of 17.8. The results presented include the required thrust to weight ratio and wing loading and the resulting gross weight and direct operating costs as functions of the engine noise level for each of the four combinations of engine cycles and aircraft concepts.


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    Title :

    Propulsion system sizing for powered lift and mechanical flap quiet aircraft


    Contributors:

    Conference:

    Air Transportation Meeting ; 1974 ; Dallas, TX


    Publication date :

    1974-04-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Propulsion System Sizing For Powered Lift And Mechanical Flap Quiet Aircraft

    Bowles, Jeffrey V. / Waters, Mark H. / Galloway, Thomas L. | SAE Technical Papers | 1974





    Powered Lift and Mechanical Flap Concepts for Civil Short-Haul Aircraft

    John A. Conlon / Jeffrey V. Bowles | AIAA | 1978