35th Congress of the International Council of the Aeronautical Sciences

04.2 - Aerostructures Design, Structural Dynamics, Aeroelasticity

MECHANISM OF ALL-MOVABLE RUDDER NONLINEAR AEROELASTIC BEHAVIOR INDUCED BY BENDING FREEPLAY

X. Ai¹, Z. Chen¹, Z. Liang¹, Z. An¹, X. Xu¹, Y. Lu¹, W. Qian¹; ¹Dalian University of Technology, China

Modern high-speed aircraft commonly adopt all-moving rudder to enhance maneuverability. However, freeplay within all-movable rudder system can induce limit cycle oscillation (LCO). This paper investigates the influence of bending freeplay on the nonlinear aeroelastic behavior. A novel mechanism for LCO induced by bending freeplay is proposed.


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DOI: 10.71945/icas2026_0566