The dynamic synthesis of gyroscopic structures consisting of point-connected substructures is investigated. The objective is to develop a mathematical model capable of an adequate simulation of the modal characteristics of a helicopter using a minimum number of degrees of freedom. The basic approach is to regard the helicopter structure as an assemblage of flexible substructures. The variational equations for the perturbed motion about certain equilibrium solutions are derived. The discretized variational equations can be conveniently exhibited in matrix form, and a great deal of information about the system modal characteristics can be extracted from the coefficient matrices. The derivation of the variational equations requires a monumental amount of algebraic operations. To automate this task a symbolic manipulation program on a digital computer is developed.


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    Titel :

    Structural Dynamics, Stability, and Control of Helicopters


    Beteiligte:
    Meirovitch, L. (Autor:in) / Hale, A. L. (Autor:in)

    Erscheinungsdatum :

    01.07.1978


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Structural Dynamics, Stability, and Control of Helicopters

    L. Meirovitch / L. G. Kraige / A. L. Hale | NTIS | 1976


    Structural dynamics, stability, and control of helicopters

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    Stability and control of tethered helicopters

    Kaufman, L. / Schultz, E.R. | Engineering Index Backfile | 1962


    Stability aids for helicopters

    St. John, O.B. | Engineering Index Backfile | 1962