The details of predicting the aerodynamic forces of maneuvering helicopter rotors are discussed in this paper. A new approach to modeling the unsteady rotor aerodynamic forces is presented based on the insight into nonuniform induced velocity distribution, inflow dynamics and unsteady airfoil behavior. For a specified maneuver, the rotor control inputs and helicopter flight attitudes during the maneuvering are first obtained using inverse solution technique, and then the unsteady rotor forces are numerically simulated by synthetically applying the vortex theory, dynamic inflow theory and unsteady airfoil aerodynamic models. Good results of the sample calculations of lateral jink and pop-up maneuvers are obtained.


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    Titel :

    Modeling the unsteady aerodynamic forces of a maneuvering rotor


    Beteiligte:
    Cao, Yihua (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1999-10-01


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Unsteady Aerodynamic Models for Maneuvering Aircraft

    Hu, C.-C. / Lan, E. / Brandon, J. et al. | British Library Conference Proceedings | 1993


    Unsteady aerodynamic models for maneuvering aircraft

    HU, CHIEN-CHUNG / LAN, C. / BRANDON, JAY | AIAA | 1993


    Unsteady aerodynamic models for maneuvering aircraft

    Hu, Chien-Chung / Lan, C. E. / Brandon, Jay | NTRS | 1993