摘要
目的针对传统垂直塔座椅弹射试验中采用刹车片制动所存在的试验准备时间长、效率低的问题,提出采用永磁涡流制动的方式进行制动。方法通过理论计算和数值模拟,研究永磁涡流制动在滑车垂直坠落试验中定点缓冲制动的可行性,并在此基础上,优化永磁涡流制动系统中静子板的材料方案。结果采用永磁涡流制动系统能够满足垂直塔座椅弹射试验对40 m制动距离的要求。结论优化的静子板的选材方案为:高速制动段采用不锈钢,中速制动段采用铜镍合金,低速制动段采用铝合金。
In order to solve the problems of long preparation time and low test efficiency caused by using brake pads in the traditional vertical tower seat ejection test,this paper proposes the use of permanent magnet eddy current braking for braking.Through theoretical calculations and numerical simulation,this paper studies the feasibility of fixed-point buffer braking of permanent magnet eddy current braking in the vertical drop test of the pulley,and optimizes the material scheme of the stator plate in the permanent magnet eddy current braking system on this basis.The simulation calculation results show that the permanent magnet eddy current braking system can meet the requirements of the vertical tower seat ejection test for a braking distance of 40 meters.The optimized stator plate material selection scheme is:high-speed braking section uses stainless steel,medium-speed braking section adopts copper-nickel alloy,and aluminum alloy is used in the low-speed braking section.
作者
李承觊
张德远
LI Cheng-ji;ZHANG De-yuan(China Electronics Technology Avionics Co.,Ltd.,Chengdu 611731,China;School of Mechanical Engineering and Automation,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
出处
《装备环境工程》
CAS
2021年第10期58-62,共5页
Equipment Environmental Engineering
关键词
永磁涡流
缓冲防坠
定点制动
permanent magnet eddy current
buffer anti-dropping
fixed-point braking
