The invention provides a variable lip duct. The variable lip duct comprises a duct cylinder, a propeller is installed in the duct cylinder, a lip mask located at the end and a driving piece used for driving the lip mask to be unfolded or folded are installed on the duct cylinder, a sliding groove is formed in the duct cylinder, pressure early warning pieces are installed at the two ends of the sliding groove, and an elastic ejection piece located between the two pressure early warning pieces is installed in the sliding groove. A connecting rod is hinged between the lip mask and the elastic ejection piece; when the lip mask is unfolded or folded, the elastic jacking pieces abut against the corresponding pressure early warning pieces respectively. The invention provides a lip-variable duct which solves the problems that when an aircraft is converted into a horizontal cruising state, due to the fact that the windward area of a duct lip is large, extra resistance is brought to a propelling system, and the cruising efficiency of the aircraft is reduced.
本发明提出了一种可变唇口涵道,包括涵道筒;所述涵道筒内安装有螺旋桨,所述涵道筒上安装有位于端部的唇口罩以及用于驱动唇口罩展开或收起的驱动件,所述涵道筒上开设有滑槽,且滑槽的两端均安装有压力预警件,所述滑槽内安装有位于两个压力预警件之间的弹性顶件,所述唇口罩与弹性顶件之间铰接有连杆;当唇口罩展开或收起时,弹性顶件分别与相应的压力预警件抵靠。本发明提出了一种可变唇口涵道,解决了在飞行器转换为水平巡航状态时,由于涵道唇口的迎风面积较大,会给推进系统带来额外的阻力,降低飞行器的巡航效率的问题。
Variable lip duct
一种可变唇口涵道
31.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |