A main fixed-pitch propeller rotor helicopter is characterized in that a first fixed pitch propeller is arranged at the top of a helicopter body, a second fixed pitch propeller is arranged on the first fixed pitch propeller, a rotor wing is arranged on the second fixed pitch propeller, a tail variable pitch propeller is arranged at the tail end of a tail beam, a total pitch and periodic variable pitch controller is arranged to control the inclination angle of the rotating surface of the blade tip of the rotor wing, so that the size and direction of the lift force of the rotor wing are changed, an undercarriage, a second fixed pitch propeller and a first fixed pitch propeller are arranged under a fuselage and close to the gravity center to provide most lift force, the rotor wing only provides small lift force, and the rotor wing is responsible for controlling pitching and rolling, the tail variable pitch propeller controls the course, the wind resistance is improved, the rotating speed of the rotor wings can be low, the manufacturing difficulty and cost are reduced, the rotating speed of the second fixed pitch propeller and the first fixed pitch propeller is high, the load capacity is increased, and the helicopter further has the advantages of being compact in structure, suitable for long-time flight in a narrow space and capable of being applied to the fields of transportation, aerial photography, agricultural operation and the like.
一种主力固定桨距螺旋桨旋翼直升机,在机身的顶部,设置第一定距螺旋桨,在第一定距螺旋桨的上面设置第二定距螺旋桨,在第二定距螺旋桨的上面设置旋翼,在尾梁的末端设置尾变距螺旋桨,设置总距和周期变距控制器操纵旋翼桨叶桨尖旋转面的倾斜角,从而改变旋翼的升力的大小和方向,机身下靠近重心附近设置起落架,第二定距螺旋桨、第一定距螺旋桨提供大部分的升力,旋翼只提供较小的升力,旋翼负责操纵俯仰和横滚,尾变距螺旋桨操纵航向,并提高了抗风能力,旋翼的转速可以较小,降低了制造难度和成本,第二定距螺旋桨、第一定距螺旋桨的转速较大,增大了载重量,具有结构紧凑,适合在狭窄的空间长时间飞行,可应用于运输、航拍、农业作业等领域。
Main fixed-pitch propeller rotor helicopter
主力固定桨距螺旋桨旋翼直升机
2021-12-24
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
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