Journal of the Korean Society for Aviation and Aeronautics (한국항공운항학회지)
- Volume 15 Issue 4
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- Pages.24-32
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- 2007
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- 1225-9705(pISSN)
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- 2466-1791(eISSN)
Computational Vibration Analysis and Evaluation of a Tilt-Rotor Aircraft Considering Equipment Supporting Structures
틸트로터 항공기의 탑재장비 상세 지지구조 형상을 고려한 전산진동해석 및 평가
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Kim, Yu-Sung
;
- Kim, Dong-Man ;
- Yang, Jian-Ming ;
- Lee, Jung-Jin ;
- Kim, Dong-Hyun (국립경상대학교 기계항공공학부 및 항공기부품기술연구소)
-
김유성
(국립경상대학교 기계항공공학부) ;
- 김동만 (국립경상대학교 기계항공공학부) ;
- 양건명 (국립경상대학교 기계항공공학부 및 Huaihai Institute of Technology) ;
- 이정진 (항공우주연구원) ;
- 김동현
- Published : 2007.12.31
Abstract
In this study, computational structural vibration analyses of a smart unmanned aerial vehicle (SUAV) with tilt-rotors due to dynamic hub loads have been conducted considering detailed supporting structures of installed equipments. Three-dimensional dynamic finite element model has been constructed for different fuel conditions and tilting angles corresponding to helicopter, transition and airplane flight modes. Practical computational procedure for modal transient response analysis is successfully established. Also, dynamic loads generated by rotating blades and wakes in the transient and forward flight conditions are calculated by unsteady computational fluid dynamics technique with sliding mesh concept. As the results of present study, transient structural displacements and accelerations of the vibration sensitive equipments are presented in detail. In addition, vibration characteristics of structures and installed equipments of which safe operation is normally limited by the vibration environment specifications are physically investigated for different flight conditions.
Keywords