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http://dx.doi.org/10.5139/JKSAS.2021.49.7.539

Reverse Design for Composite Rotor Blade of BO-105 Helicopter  

Lee, Chang-Bae (Seoul National University)
Jang, KiJoo (Seoul National University)
Im, Byeong-Uk (Seoul National University)
Shin, SangJoon (Seoul National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.49, no.7, 2021 , pp. 539-547 More about this Journal
Abstract
Helicopter rotor blade is required to be designed by considering the interacting effects among aerodynamics, flexibility, and controllability. The reverse design allows the structural components to have common characteristics by using the configuration numerics and experimental results. This paper aims to design the composite rotor blade which will feature common characteristics with that of BO-105. The present engineering design procedure is done by dividing the rotor blade into a few sections and composite laminates across the cross section. For each section, variational asymptotic beam sectional analysis (VABS) program is used to evaluate its flapwise, lagwise, and torsion stiffnesses to have discrepancy smaller than certain tolerance. Finally, CAMRAD II is used to predict the stress acting on the rotor blade during the specific flight condition and to check whether the present deign is structurally valid.
Keywords
Composite Structure; Rotor Blade; Reverse Design; Sectional Analysis; Stress Recovery;
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