To enable flexible adjustment of the steering stability of a rotor craft against disturbances such as an updraft and the flight efficiency thereof.SOLUTION: The problem is solved by a rotor craft comprising a plurality of horizontal rotors, in which the plurality of horizontal rotors include large diameter propellers and small diameter propellers, which have different diameters, or large pitch propellers and small pitch propellers, which have different pitch angles. In the case where the large diameter propellers and the large pitch propellers are referred to as large lift propellers and the small diameter propellers and the small pitch propellers are referred to as small lift propellers, the large lift propellers and the small lift propellers are fixed pitch propellers whose lift is adjusted by controlling the rotation speed, and the small lift propellers are driven when the rotation speed of the large lift propellers falls below a predetermined threshold. The problem is solved also by a rotor craft in which, during flight, the rotation speed of large lift propellers can be lowered to a rotation speed or less where the gyro effect or lift thereof is lost.SELECTED DRAWING: Figure 1
【課題】上昇気流などの外乱に対する回転翼航空機の操舵安定性とその飛行効率との柔軟な調整を可能とする。【解決手段】複数の水平回転翼を備える回転翼航空機であって、複数の水平回転翼は、直径が異なるプロペラである大径プロペラおよび小径プロペラ、または、ピッチ角が異なるプロペラである大ピッチプロペラおよび小ピッチプロペラを含んでおり、大径プロペラおよび大ピッチプロペラを大揚力プロペラと呼び、小径プロペラおよび小ピッチプロペラを小揚力プロペラと呼ぶ場合に、大揚力プロペラおよび小揚力プロペラは、回転数を制御することで揚力が調節される固定ピッチプロペラであり、小揚力プロペラは、大揚力プロペラの回転数が所定の閾値を下回ったときに駆動されることを特徴とする回転翼航空機、および、飛行中に大揚力プロペラの回転数をそのジャイロ効果または揚力が失われる回転数以下に下げることが可能な回転翼航空機により解決する。【選択図】図1
ROTOR CRAFT
回転翼航空機
2019-04-25
Patent
Electronic Resource
Japanese
IPC: | B64C AEROPLANES , Flugzeuge |