The aerodynamic performance of rotorcraft designed for heavy-lift and high-speed cruise is examined. Configurations considered include the tiltrotor, the compound helicopter, and the lift-offset rotor. Design conditions are hover and 250-350 knot cruise, at 5k/ISA+20oC (civil) or 4k/95oF (military); with cruise conditions at 4000 or 30,000 ft. The performance was calculated using the comprehensive analysis CAMRAD II, emphasizing rotor optimization and performance, including wing-rotor interference. Aircraft performance was calculated using estimates of the aircraft drag and auxiliary propulsion efficiency. The performance metric is total power, in terms of equivalent aircraft lift-to-drag ratio L/D = WV/P for cruise, and figure of merit for hover.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Performance of Advanced Heavy-Lift, High-Speed Rotorcraft Configurations


    Contributors:

    Conference:

    AHS International Forum on Rotorcraft Multidisciplinary Technology ; 2007 ; Seoul, Korea, Republic of


    Publication date :

    2007-10-15


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English