毕业设计(论文)-飞机起落架的结构设计与仿真
29页1、摘 要飞机的起落架都由固定的支架和机轮组成,为减小飞行阻力,节约燃料提升飞行时间,提升飞机的气动性能,因此需设计可收放的起落架,当飞机在空中飞行时就将起落架收到机翼或机身之内,以获得良好的气动性能,飞机着陆时再将起落架放下来。然而由于飞机的飞行速度快,降落时安全系数要求高,因此对于起落架的设计,尤其是其收放性能的设计尤为重要,十分关键。可以说起落架的可靠性关系到整个飞机人员的生命健康。因此在起落架设计过程中既要保证飞机的轻量化,又要保证其可靠性。本设计主要通过查阅资料,了解起落架的工作原理及结构,对飞机的起落架进行结构设计。并绘制二维图,建立三维模型完成动画仿真。同时对起落架的工艺及材料进行分析,对整理零部件的装配工艺进行设计,保证整体起落架机构的可靠性。关键词: 起落架; 动画仿真; 结构工艺; 可靠性;全套图纸加扣3012250582ABSTRACTThe landing gear of an aircraft is composed of fixed brackets and wheels. In order to reduce flight resistance, save f
2、uel, improve flight time and enhance aerodynamic performance of the aircraft, it is necessary to design retractable landing gear. When the aircraft is flying in the air, it receives the landing gear into the wing or fuselage to obtain good aerodynamic performance, and then lowers the landing gear when the aircraft is landing. However, due to the high speed of flight and the high requirement of landing safety factor, the design of landing gear, especially its retractable performance, is particula
3、rly important and crucial. It can be said that the reliability of landing gear is related to the life and health of the entire aircraft personnel. Therefore, in the process of landing gear design, it is necessary to ensure not only the lightweight of aircraft, but also its reliability. This design mainly through consulting the data, understand the working principle and structure of the landing gear, and design the structure of the aircraft landing gear. And draw two-dimensional graph, establish
4、three-dimensional model to complete animation simulation. At the same time, the technology and material of landing gear are analyzed, and the assembly process of finishing parts is designed to ensure the reliability of the overall landing gear mechanism.Key words: landing gear; animation simulation; structure technology; reliability;目 录第一章 起落架的发展和概述61.1 起落架的发展过程61.2 起落架的概述61.3 起落架的分类71.3.1前三点式起落架71.3.2后三点式起落架81.3.3自行车式起落架91.3.4多支点式起落架9第二章 起落架的总体设计要求92.1起落架的功用102.2 飞机起落架的组成:102.3 起落架的设计要求102.3.1一
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