Flow Characteristics around Flying Animal and Size Effects on Flight Mechanism

飞行动物周围流动特性及尺寸对飞行机构的影响

基本信息

批准号：
09650205
负责人：
SUDO Seiichi
金额：
$ 0.45万
依托单位：
Iwaki Meisei University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650205/
关键词：
Biological Engineering Biomechanics Bio-fluid Mechanics Fluid Dynamics Aerodynamics Insect Flight Bird Flight

项目摘要

This research project is concerned with the morphological characteristics, the wing beating behavior, and the aerodynamic characteristics of a flying animal. The wings of the dragonfly, Sympetruin infuscatum, the gadfly, Tabanus rufidens, the fly, Parasarcophaga crassipalpis, and the vinegar fly, Drosophila lutea were observed microscopically making use of the scanning electron microscope. Several cross section of insect costa were observed, and the image processing of the electron micrograph was conducted on a personal computer. It was found that the costa varies in shape and size corresponding to the location of wing. With respect to the structure of the flight feather, the pigeon feathers were observed microscopically using the scanning electron microscope. A three dimensional motion analysis system revealed the wing motion of the flying animal. The experimental system composed of two high speed video cameras, a motion grabber system and a personal computer, analyzed the wing motion in three dimensions. The free flight of theflying animal was analyzed. The relationship between the insect flight and its wing structure was reveald. The free flight behavior of the Java sparrow was clarified, that is, the time variation of the displacement and velocity on the bird's wing was obtained quantitatively. Wing path and flapping of the bird were obtained in three dimensional expression.When the flight feathers of the Java sparrow were exposed in the uniform smooth wind, bending of the flight feather occurs, and bending characteristics of the flight feather showed the anisotropy in the wind direction. Each flight feather has its own bending characteristics.

该研究项目与飞行动物的形态特征，翼殴打行为和空气动力学特征有关。观察到，观察到显微镜可以使用蜻蜓，sypetruin infuscatum，gadfly，tabanus rufidens，the the Fly，parasarcophaga crassipalpis和醋蝇，果蝇lutea的微观图。观察到昆虫哥斯达黎加的几个横截面，并在个人计算机上进行了电子显微照片的图像处理。发现Costa的形状和大小与机翼位置相对应。关于飞行羽毛的结构，使用扫描电子显微镜观察了鸽子羽毛。三维运动分析系统揭示了飞行动物的机翼运动。由两个高速摄像机组成的实验系统，一个运动抓手系统和一台个人计算机，分析了三个维度的机翼运动。分析了飞行动物的自由飞行。昆虫飞行及其机翼结构之间的关系是复活的。阐明了Java麻雀的自由飞行行为，即，定量获得了鸟翼上位移和速度的时间变化。在三维表达中获得了翅膀路径和拍打。每个飞行羽毛都有自己的弯曲特性。