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Formulation for flutter and vibration analysis of a hingeless helicopter blade in hover: Part I

Formulation for flutter and vibration analysis of a hingeless helicopter blade in hover: Part I,10.1108/00022660710732734,Aircraft Engineering and Aer

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Formulation for flutter and vibration analysis of a hingeless helicopter blade in hover: Part I   (Citations: 3)
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Purpose – This study aims to derive the kinetic and the potential energy expressions of a rotating uniform hingeless rotor blade and the aerodynamic loads that act on the blade element in hovering flight conditions. Design/methodology/approach – The blade is modeled as an Euler-Bernoulli beam. The governing partial differential equations of motion and the associated boundary conditions are derived using the Hamilton's principle. Findings – The derivations of the energy expressions and the aerodynamic loads are made in a detailed way by including several explanatory tables. The resultant equations of motion are in good agreement with the literature. Additionally, in this work the hub radius effect is included in the equations of motion. Originality/value – Arguably this study achieves a breakthrough in deriving the kinetic and the potential energy expressions of a rotating uniform hingeless rotor blade and the aerodynamic loads that act on the blade element in hovering flight conditions.
Journal: Aircraft Engineering and Aerospace Technology - AIRCRAFT ENG AEROSP TECHNOL , vol. 79, no. 2, pp. 177-183, 2007
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