A new advanced system for active control of helicopters and its application to the solution of rotor aerodynamic and aeroelastic problems is described. Each blade is individually controlled in the rotating frame over a wide range of frequencies. Application of the system to gust alleviation, attitude stabilization, vibration alleviation, blade lag damping augmentation, stall flutter suppression, blade flapping stabilization, stall alleviation, and performance enhancement is outlined. The effectiveness of the system in achieving most of these applications is demonstrated by experimental results from wind tunnel tests of a model helicopter rotor with individual blade control. The feasibility of achieving many or all of the applications of individual blade control using the conventional helicopter swash plate is demonstrated, and the necessary control laws are presented.


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    Title :

    Helicopter individual-blade-control research at MIT 1977-1985


    Contributors:

    Publication date :

    1986-09-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





    Helicopter Individual-Blade-Control: Promising Technology for the Future Helicopter

    Ham, N. D. / American Helicopter Society; Northeast Region | British Library Conference Proceedings | 1995



    Helicopter Individual-Blade-Control: Promising Technology for the Future Helicopter

    Ham, N. D. / American Helicopter Society; Northeast Region | British Library Conference Proceedings | 1995