A type of rotorcraft that generates lift using rotors, like helicopters. Although the appearance is very similar, whereas helicopters use power to drive their rotors, autogyros do not have a direct power connection to the rotors. Instead, the rotors spin automatically due to the wind generated when the aircraft moves forward with its propeller, generating lift and allowing the aircraft to fly. As a result, autogyros cannot hover in the air like helicopters. They also cannot take off and land vertically, but they have the distinctive features of being able to fly stably even at low speeds and have a very short runway for takeoff and landing. Today, they are often used for leisure and sports. They were invented by Juan de la Cierva of Spain, and first flew in 1923. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ヘリコプタと同じく回転翼 (ロータ) によって揚力を発生する回転翼航空機の一種。外観もよく似ているが,ヘリコプタが動力によって回転翼を駆動するのに対し,オートジャイロは回転翼と動力が直結しておらず,プロペラで前進したときに生ずる風力によって自動的に回転翼が回り,揚力を得て浮揚する。このためヘリコプタのような空中停止 (ホバリング ) はできない。また垂直離着陸もできないが,離着陸のための滑走距離が非常に短い点や,低速でも安定して飛べるのが特色。今日ではレジャー,スポーツ用としての利用が多い。スペインのフアン・ド・ラ・シエルバによって発明され,1923年に初飛行した。
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