民用飞机前起落架舱门“拉杆—摇臂”式机构建模与优化  

Modeling and Optimization of a Rod-and-Crank Mechanism for Nose Landing Gear Doors of Civil Aircraft

作　　者：董萌[1] 

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《装备制造技术》2014年第8期112-113,116,共3页Equipment Manufacturing Technology

摘　　要：介绍了民用飞机前起落架上应用广泛的"拉杆—摇臂"机械联动式舱门机构,建立了该机构的数学模型,并利用遗传算法对初始机构进行优化,结果表明:优化后的机构使得舱门运动更加平稳。A mechanism for nose landing gear （NLG） doors operated mechanically by gear is presented, which consist of a rod and a crank and is used widely for civil aircraft. The kinematics of this mechanism is deduced and its performance is optimized by genetic algorithm. Results show that the angular velocity and the angular acceleration of NLG doors have been decreased during NLG retraction and extension using optimized mechanism so that NLG doors can be moved more smoothly.

关 键 词：前起落架 舱门机构 机械联动式 拉杆—摇臂 

分 类 号：V226[航空宇航科学与技术—飞行器设计]