In this paper, the aeroelastic stability of a hingeless rotor blade in hover is investigated. The blade is modeled using the geometrically exact, fully intrinsic beam equations, whereas the aerodynamic loads applied on the blade are simulated based on the quasi-steady Greenberg aerodynamic theory. Using the generalized differential quadrature method, the resultant coupled aeroelastic equations are discretized and solved, and the eigenvalues of the linearized system are determined. By inspecting the eigenvalues, the stability of the system is examined for variations in different parameters. The obtained results are validated through comparison against those reported in the literature. Furthermore, the effects of offset of the aerodynamic center from the reference axis, the precone angle, the lead–lag frequency, static stall, and the drag coefficient on the stability boundaries of the system are evaluated. It is found that, by using the geometrically exact, fully intrinsic beam equations along with the generalized differential quadrature method, the aeroelastic instabilities of the hingeless rotor blades in hover can be determined accurately.


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    Title :

    Aeroelastic Stability of Hingeless Rotor Blades in Hover Using Fully Intrinsic Equations



    Published in:

    Publication date :

    2017




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 50.93 / 55.50 / 50.93 Weltraumforschung
    Local classification TIB:    770/7040



    Aeroelastic Stability of Hingeless Rotor Blades in Hover Using Fully Intrinsic Equations

    Amoozgar, M. R. / Shahverdi, H. / Nobari, A. S. | AIAA | 2017




    Aeroelastic Stability of Hingeless, Elastically Tailored Rotor Blades in Hover

    Fulton, M. V. / Hodges, D. H. | British Library Online Contents | 1993


    Refined Aeroelastic Analysis of Hingeless Rotor Blades in Hover

    Maeng Hyo Cho / Seong Min Jeon / Sung Hyun Woo et al. | AIAA | 1997