Time‐History Analysis for Rotorcraft Dynamics Based on a Component Approach

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Abstract
This paper describes a time‐history analysis far rotorcraft dynamics based on dynamical substructures and nonstructural mathematical and aerodynamic components. The analysis is applied to predict helicopter ground resonance and response to rotor damage. Other applications illustrate the stability and steady vibratory responses of stopped and gimballed rotors, representative of new technology. Desirable attributes expected from modern codes are realized. The analysis is able to handle a comprehensive set of steady state and stability problems with a small library of components and it has responded to new technologies with timely solutions by limiting the effort required to implement new capabilities through its component structure.

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