民用飞机应急离机舱门打开过程分析研究

Research on the Opening Process of the Emergency Evacuation Door for Civil Airplane

应急离机舱门作为民用飞机试飞过程中唯一的专用逃生出口,其舱门能否顺利打开直接影响着机组人员的逃生。针对某民用飞机应急离机舱门机构的特点,从锁定、解锁两方面对其运动原理进行分析;分别考虑有无增压载荷两种情况,通过Lms.Virtual.Lab Motion建立其虚拟样机模型,对其打开过程进行仿真分析。结果表明:该套舱门机构在锁定、解锁方面具备良好的保护措施;有增压情况下解开过中心保护机构所需的操纵力远大于无增压情况,但其解开后对舱门的打开起到有效助力作用,且外载越大打开响应越快。

Emergency evacuation door（EED） is the only exits in a flight test airplane, whether the EED can open smoothly or not directly affects the flight crew evacuation. The motion principle of the EED in a certain type of flight test airplane from two aspects（lock and unlock） based on the characteristics of its mechanism is analyzed. In addition, virtual prototypes of the mechanism are established with Lms. Virtual. Lab Motion software to sim- ulate and analyze the motion of EED, with and without pressure load respectively. The result shows the mecha- nism performs well in terms of operation protection during unlocking and locking. The operating force to unlock the protection mechanism in pressurized condition is larger than that in non-pressurized condition. However, once the protection mechanism is unlocked, the pressure load can assist in opening the door, greater pressure load will result in faster response.