スギモト タケシ   Sugimoto Takeshi
  杉本 剛
   所属   神奈川大学  工学部 情報システム創成学科
    神奈川大学大学院  工学研究科 工学専攻(情報システム創成領域)
   職種   教授
言語種別 日本語
発行・発表の年月 2008/08
形態種別 その他
標題 The Fossils of Ectoplasm in a Nutshell: A Brief History of the Challenges into the Air in the Animal Kingdom
執筆形態 単著
掲載誌名 12th Asian Congress of Fluid Mechanics Program and Abstract Book
巻・号・頁 28-29頁
概要 Evolution of flight in the animal kingdom is a series of challenges for survival in severe natural environments, in particular the thin air and the predators. Although flight is an efficient way of transportation, it requires some special organs suited for respiration and locomotion. Considering about the time history of oxygen concentration in the atmosphere, one knows the reason for the timing of challenges into the air: insects appears in the oxygen rich air; diverse evolution of pterosaurs, dinosaurs and birds occurs under the thin air condition with the aid of air-sac systems. Wind-tunnel experiments reveal the fact about the ancient wings that flapping membrane wings is an efficient way of obtaining thrust owing to the phase difference between heaving and feathering brought about by the passive motion of the trailing-edge.