民用飞机舱门压力锁定机构设计研究

摘要:

民用飞机增压舱门正常开启手柄力和不安全压力下开启手柄力有不同的要求，单纯依靠舱门开启机构设计很难同时满足正常开启和不安全压力开启的手柄操作力要求，为了满足适航条例要求并提高舱门的操纵性，有必要设计出可以在增压状态下锁定舱门完全关闭位置的压力锁定机构。给出了舱门压力锁定机构的设计要求，并针对两种不同类型增压舱门，分别分析了其机构特点，基于机构特性给出了两种不同类型压力锁定机构的设计思路，在此基础上，提供了“集成于增压预防门”和“锁定手柄”两种不同形式压力锁定机构，介绍其机构形式和机构组成，分析了机构运动过程和运动原理，机构可以满足设计要求，为民用飞机舱门压力锁定机构设计提供了参考，具有一定的推广价值。

Abstract:

There are different requirements for normal opening handle force and unsafe pressure opening handle force of civil aircraft pressurized cabin door, it is difficult to meet the requirements of normal opening and unsafe pressure opening handle force by relying on the door opening mechanism design. In order to meet the requirements of airworthiness regulations and improve the maneuverability of the cabin door, it is necessary to design pressure lock mechanism which can lock the fully closed position of the cabin door in the pressurized state.The design requirements of the pressure lock mechanism were given, and the mechanism characteristics of two different types of pressurized cabin door were analyzed respectively. Based on the mechanism characteristics, the design ideas of two different types of pressure locking mechanisms were given. On this basis, two different forms of pressure locking mechanisms “integrated in the pressurized pre defense door” and “locking handle” were provided. The mechanism form and the composition of mechanism were introduced, and the movement principle and working process of the pressure lock mechanism were analyzed.The mechanisms can meet the design requirements, which provides a reference for the design of door pressure lock mechanism and it has practical value.