The invention relates to the field of helicopter design, in particular to an electromagnetic type automatic inclinator used for changing the pitch angle of a helicopter. The device comprises a moving ring and a fixed ring, the moving ring and the fixed ring are connected into a whole through a bearing, the moving ring comprises a collective pitch control coil and a periodic variable pitch control coil, and the collective pitch control coil changes the size and direction of a magnetic field by changing the size and direction of current passing through the coils to drive a permanent magnet on a variable pitch rocker arm to move upwards or downwards at the same time. The periodic variable pitch control coil is composed of a plurality of iron cores and coils with the number of turns and the winding direction changing regularly, so that the magnitude of magnetic force changes periodically. A permanent magnet is embedded in the inner ring of the moving ring. The mechanical structure and the weight of the automatic inclinator are simplified, a control line system between a control rod and the automatic inclinator and between a collective distance rod and the automatic inclinator is omitted, electric signal control is adopted, and the weight of a helicopter is greatly reduced. According to the scheme, corresponding executing mechanisms (steering engines and the like) and variable pitch pull rods are reduced, and the performance of the helicopter can be improved.
本发明涉及直升机设计领域,具体为一种用于改变直升机桨距角的电磁式自动倾斜器。包含动环和不动环,动环和不动环通过轴承连接为一体,动环包含总距操纵线圈和周期变距操纵线圈,总距操纵线圈通过改变通过线圈的电流大小和方向,改变磁场大小和方向,带动变距摇臂上的永磁铁同时向上或向下运动,达到改变桨叶安装角的目的,周期变距操纵线圈由若干铁芯及匝数及缠绕方向规律变化的线圈组成,使磁力大小成周期性变化;动环内圈镶嵌个永磁铁。简化了自动倾斜器机械结构和重量,省掉了驾驶杆和总距杆到自动倾斜器之间的操纵线系,改为电信号控制,直升机重量大幅减轻。本方案也减少的对应的执行机构(舵机等)和变距拉杆,有助于提升直升机的性能。
Electromagnetic automatic inclinator for changing pitch angle of helicopter
一种用于改变直升机桨距角的电磁式自动倾斜器
2023-10-27
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
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