The paper addresses the integration of blade dynamics, aerodynamics, structures and aeroelasticity in the design of helicopter rotors using formal optimization technique. The interaction of the disciplines is studied inside a closed-loop optimization process. The goal is to reduce vibratory shear forces at the blade root with constraints imposed on the dynamic, structural and aeroelastic design requirements. Both structural and aerodynamic design variables are used. A Minimum Sum beta formulation is used to formulate the multiobjective optimization problem. A nonlinear programming technique and an approximate analysis procedure are used for optimization. Substantial reductions are obtained in the vibratory root forces and moments while satisfying the other design criteria. The results of the optimization procedure are compared with a baseline or reference design.
Optimum design of helicopter rotor blades with multidisciplinary couplings
Optimale Auslegung von Hubschrauberrotorblättern mittels Gruppierung mehrerer wissenschaftlicher Methoden
AIAA-Papers ; 1-9
1992
9 Seiten, 9 Bilder, 2 Tabellen, 21 Quellen
Conference paper
English
An overview of rotor blades optimum design for helicopter vibration reduction
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