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Journal of the Korea Institute of Military Science and Technology 2002;5(4):81-87.
Nonlinear Aeroelastic Simulation of a Full-Span Aircraft with Oscillating Control Surfaces
Jae-Han Yoo, Dong-Hyun Kim, Hyuk-Jun Kwon, In Lee, Seung-Kil Paek, Young-Ik Kim
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항공기의 조종면 진동시 비선형 공탄성 시뮬레이션
유재한, 김동현, 권혁준, 이인, 백승길, 김영익
1한국과학기술원 기계공학과 항공우주전공 대학원
2경상대학교 기계항공공학부
3한국과학기술원 기계공학과 항공우주전공
4한국항공우주산업(KAL)
Abstract
In this paper, the transonic aeroelastic behavior of the generic fighter model is investigated in the time domain. The simulation of flutter flight test using forced harmonic motion of control surfaces including inertial coupling effects is conducted at the various conditions. The nonlinear aerodynamic effects are considered using a transonic small disturbance equation. A modal model obtained by a free vibration analysis is used for the structural model. The relations between the computed flutter boundary and the simulation results of the responses using the harmonic motions of control surfaces at various conditions are investigated.
Key Words: Flutter, Transonic, Control Surface, CFD, Aeroelasticity
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