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자료유형
학술대회자료
저자정보
이부건 (서울대학교) 박형민 (서울대학교)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2014년도 추계학술대회
발행연도
2014.11
수록면
108 - 112 (5page)

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Among many nature’s flying insects, compared to a dragonfly, fruit fly, and butterfly, a beetle has a specific morphological feature such that hard outer wings (so called elytra) and soft inner wings (hind-wing hereinafter) exist together. Although it has not been studied in detail, therefore, the beetle is known to use a very complex wing kinematics depending on the flight mode. In the present study, we reconstruct the three-dimensional kinematics (and deformation) of a hind-wing and elytra during the take-off flight of a beetle (Allomyrina dichotoma), recorded at 2000 fps with two high-speed cameras. For reconstruction, a modified direct linear transform (MDLT) algorithm has been used with 20 anatomical landmarks to digitize the complex wing shape variation and body posture. During the flight, the elytra do not show a significant deformation, but the hind-wing deforms in a complex manner. Due to the large stroke angle (about 180 degrees) of a hind-wing, the interaction between elytra and hind-wings seems to be important as well as the deformation of hind-wing to understand the aerodynamics of a beetle flight. On the other hand, the flapping frequency and stroke plane angle of a hind-wing is about 37 Hz and 12 degrees, respectively, averaged from the first 10 wing beats during a take-off. After the initial stage of take-off, the beetle shows various flight modes, such as hovering, forward flight, and climbing, which will be discussed in detail.

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Abstract
1. 서론
2. 실험재료 및 실험방법
3. 결과 및 토의
4. 결론
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