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논문 기본 정보

자료유형
학술대회자료
저자정보
정찬훈 (서울대학교) Anas El Arras (서울대학교) 신상준 (서울대학교) 조창민 (국방과학연구소) 장세용 (국방과학연구소) 김상용 (국방과학연구소)
저널정보
한국항공우주학회 한국항공우주학회 학술발표회 초록집 한국항공우주학회 2013년도 춘계학술대회
발행연도
2013.4
수록면
249 - 272 (24page)

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초록· 키워드

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Aeroelastic analysis of an aircraft with a high aspect ratio-wing for medium altitude and long endurance capability was attempted in this paper. In order to achieve such objective, various structural and aerodynamic models were adopted. The traditional approach has been based on an Euler-Bernoulli beam structural model. In addition to that, a geometrically non-linear beam model was adopted. The structural analysis results of the present beam models were obtained and compared with those by three-dimensional NASTRAN finite element model. The relevant unsteady aerodynamic forces were acquired by two methods. First, a finite state dynamic inflow unsteady aerodynamics model was developed and evaluated. Second, ZAERO, which is based on the doublet lattice method, was used. These two kinds of aerodynamic forces were compared, and applied to the foregoing flutter analysis. The structural mode shapes and natural frequencies from both the Euler-Bernoulli beam structural model and the three-dimensional finite element model were transferred to ZAERO, which used the DLM aerodynamics to estimate the flutter. Similarly, flutter prediction was conducted by combining the Euler-Bernoulli beam structural model and the finite state dynamic inflow unsteady aerodynamics. The next phase of the present research will deal with the analysis of the possible interaction between the rigid-body degrees of freedom and the aeroelastic modes.

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ABSTRACT
1. Introduction
2. Analytical Formulation
3. Flutter Analysis
4. Numerical Results
5. Conclusion and Future Works
References

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UCI(KEPA) : I410-ECN-0101-2014-550-002696115