To provide a compound helicopter whose improvement of flight efficiency is achieved.SOLUTION: A compound helicopter 10 comprises: a shell 20; a first main wing part 31 which extends to one side from the shell; a second main wing part 32 which extends to the other side from the shell; a main rotor 40 provided on an upper side with respect to the shell; a first propeller 50 having a plurality of first propeller blades 53 which are provided on one side of the shell, and rotate around a first rotation axis extending in a front-back direction; and a second propeller 60 having a plurality of second propeller blades 63 which are provided on the other side of the shell, and rotate around a second rotation axis extending in the front-back direction. The second propeller blade has such a shape that in the case where the main rotor rotates to a nose side of the shell via first main wing part side from a tail side of the shell when viewed from above, backward thrust generated when rotating the second propeller blade with the same pitch angle and rotational speed becomes larger than that of the first propeller blade.SELECTED DRAWING: Figure 1

    【課題】飛行効率の向上を図ったコンパウンドヘリコプタを提供する。【解決手段】コンパウンドヘリコプタ10は、胴体20と、前記胴体から一側方へ延びる第1主翼部31と、前記胴体から他側方へ延びる第2主翼部32と、前記胴体よりも上側に設けられたメインロータ40と、前記胴体の前記一側方に設けられて前後方向へ延びる第1回転軸の回りを回転する複数の第1プロペラブレード53を有する第1プロペラ50と、前記胴体の前記他側方に設けられて前後方向へ延びる第2回転軸の回りを回転する複数の第2プロペラブレード63を有する第2プロペラ60と、を備え、前記第2プロペラブレードは、上から視て前記メインロータが前記胴体の機尾側から前記第1主翼部側を経て前記胴体の機首側へ回転する場合に、ピッチ角及び回転速度を同一にして回転したときにそれぞれ発生する後方への推力が、前記第1プロペラブレードよりも大きくなる形状を有している。【選択図】図1


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    Title :

    COMPOUND HELICOPTER


    Additional title:

    コンパウンドヘリコプタ


    Contributors:

    Publication date :

    2021-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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