The invention provides a coaxial helicopter and a flexible variable-pitch rotor system. The coaxial helicopter comprises a helicopter body, an upper rotor assembly and a lower rotor assembly; the overall shape of the helicopter body is drop-shaped, and the outer contour of any cross section of the helicopter body is one of a circle, a long circle or an oval; a first blade of the upper rotor assembly is tilted upwards and connected with a first blade clamp assembly, the first blade clamp assembly is rotatably installed at one end of a first variable-pitch journal, and the first variable-pitch journal is fixed to a first blade hub; and a second blade of the lower rotor assembly tilts downwards and is connected with a second blade clamp assembly, the second blade clamp assembly is rotatably installed at one end of a second variable-pitch journal, and the second variable-pitch journal is fixed to a second blade hub. According to the coaxial helicopter, through the design that the helicopter body is in a water drop shape, the structure is simple and compact, the first blade deviates upwards, the second blade deviates downwards, the phenomenon that the first blade and the second blade are subjected to a paddle beating accident when the helicopter flies in a high-speed maneuvering mode is avoided, and the operation stability and safety are high.

    本申请提供了一种共轴直升机及柔性变距旋翼系统,包括:直升机机体,上旋翼组件和下旋翼组件;直升机机体外形整体呈水滴形,机身的任一横截面的外部轮廓为圆形、长圆形或椭圆形中的一种;上旋翼组件第一桨叶向上翘起并与第一桨夹组件连接,第一桨夹组件可转动的安装在第一变距轴颈一端,第一变距轴颈和第一桨毂固定;下旋翼组件第二桨叶向下翘起并与第二桨夹组件连接,第二桨夹组件可转动的安装在第二变距轴颈一端,第二变距轴颈和第二桨毂固定。本申请共轴直升机通过机体外形水滴形的设计,结构简单紧凑,并且通过使第一桨叶向上偏离、第二桨叶向下偏离,避免了直升机高速机动飞行时第一桨叶和第二桨叶发生打桨事故,运行的稳定性高,安全性高。


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    Titel :

    Coaxial helicopter and flexible variable-pitch rotor wing


    Weitere Titelangaben:

    一种共轴直升机及柔性变距旋翼


    Beteiligte:
    FAN JIAMING (Autor:in)

    Erscheinungsdatum :

    2021-12-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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