@inproceedings{oai:jaxa.repo.nii.ac.jp:00005477,
 author = {飯田, 明由 and 荻巣, 宏幸 and 冨川, 昌義 and Iida, Akiyoshi and Ogisu, Hiroyuki and Fukawa, Masayoshi},
 book = {宇宙航空研究開発機構特別資料: 境界層遷移の解明と制御研究会講演論文集（第41回・第42回）, JAXA Special Publication: Proceedings of the 41st and 42nd JAXA Workshops on Investigation and Control of Boundar-Layer Transition},
 month = {Feb},
 note = {第42回「境界層遷移の解明と制御」研究会（2008年3月31日-4月1日）, The purpose of this research is to clarify generation mechanism of aerodynamic force of flying insects such as the dragonfly. To understand the mechanism of insect flight is important to develop Micro Air Vehicles (MAV) for rescue inquiry devices of disaster area. The aim of this investigation is a quantitative correlation analysis between vortex structure around a dragonfly and aerodynamic force. Unsteady aerodynamic force and flow field were measured by micro load-cell system and dynamic PIV system. As a result, the continuous vortex tubes were observed such as the U-shaped separation. The topology of the separated flow is almost two dimensional without near wing-tip. When the distance of vortex core was small, the large amounts of aerodynamic forces were generated. The experimental results showed strong interaction between the vortices and wings occurred when the distance of vortex core was almost same as the chord length. We also developed a mechanical flapper based on the experimental results of the flow around a dragonfly. The aerodynamic force of the mechanical flapper was proportional to the second powers of the flapping frequency. The aerodynamic lifting force of the mechanical flapper was 0.68 times of weight the flapper at the flapping frequency of 37.6 Hz. It corresponded to twice of dragonflies' weight, it therefore indicated that the mechanical flapper generated sufficiently large enough to lift of dragonflies., 形態: カラー図版あり, 資料番号: AA0064237019, レポート番号: JAXA-SP-08-006},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {羽ばたき翼周りの非定常流れと発生する流体力の関係},
 volume = {JAXA-SP-08-006},
 year = {2009}
}