摘要
由于飞机机翼剖面高度的限制,沿翼展方向收放的起落架机构受到较多空间上的约束,而空间机构的应用可解决平面机构的缺陷并将载荷更好地分布到机身,但是特殊的飞机起落架收放机构自由度计算困扰着设计人员。采用基于螺旋理论的自由度计算方法,解决了常规自由度计算公式不能正确计算该类机构自由度的理论问题。针对国内正在研制的某大型民机主起落架,在CATIA软件中建立相应的数字模型,并将模型导入ADAMS建立了起落架收放的虚拟样机,分析了起落架在收起过程中的动力学性能。
Since the restriction of wing section＇s height, main landing gear retracting along the wing span of aircraft are subjected to more constraints in space, but thi. problem can be resolved by spatial mechanism, and load can be distributed to more locations of the fuselage. General formula cannot correctly calculate degrees of freedom of a special mechanism; screw theory method was used to solve this puzzle. Virtual prototype of a large civil aircraft main landing gear in developing is created by CATIA and ADAMS, and the dynamic performances in the process of retraction are analyzed.
出处
《机械设计与制造》
北大核心
2014年第4期143-145,149,共4页
Machinery Design & Manufacture
关键词
起落架
空间机构
螺旋理论
虚拟样机
Landing Gear
Spatial Mechanism
Screw Theory
Virtual Prototype
