Four identical fixed pitch propellers with horizontal rotating surfaces are arranged on the front, the rear, the left and the right of a helicopter body, the connecting line of the rotating centers of the four fixed pitch propellers is a rectangle, and the center of the rectangle is on the gravity center of the helicopter body. The rotation directions of the four fixed-pitch propellers are that the rotation directions of the adjacent fixed-pitch propellers are opposite, the rotation directions of the opposite-angle fixed-pitch propellers are the same, and the front middle fixed-pitch propeller and the rear middle fixed-pitch propeller which synchronously rotate reversely are arranged in front of and behind the gravity center of the top of the fuselage so as to provide most lift force. The undercarriage is arranged below the fuselage and close to the gravity center, two or more motors or fuel engines for driving the front middle fixed pitch propeller and the rear middle fixed pitch propeller are linked, even if one motor or fuel engine fails, the rest motor or fuel engine is used for forced landing, safety is improved, and the unmanned aerial vehicle has the advantages of being compact in structure, low in cost and the like. And the unmanned aerial vehicle is applied to the fields of transportation, aerial photography, agriculture and the like.
一种中部同步反转多螺旋桨直升机,在机身前后左右设置四个相同的旋转面水平的定距螺旋桨,这四个定距螺旋桨的旋转中心的连线是长方形,该长方形的中心在机身的重心上,这四个定距螺旋桨的旋转方向是相邻的定距螺旋桨的旋转方向相反,对角的定距螺旋桨的旋转方向相同,机身顶部重心的前后设置同步反转的前中部定距螺旋桨和后中部定距螺旋桨,以提供大部分的升力,机身下靠近重心附近设置起落架,两个或两个以上的驱动前中部定距螺旋桨和后中部定距螺旋桨的电机或燃油发动机是联动的,即使其中一个电机或燃油发动机失效,利用剩下的电机或燃油发动机迫降,提高了安全性,具有结构紧凑,续航时间长,载重量大的优点,应用于运输、航拍、农业等领域。
Multi-propeller helicopter with synchronous reverse middle part
中部同步反转多螺旋桨直升机
2022-05-17
Patent
Elektronische Ressource
Chinesisch
Coaxial double propeller helicopter middle propeller pitch control device
Europäisches Patentamt | 2016
|