摘要
飞机地面牵引过程中因突发事件等因素意外刹车时,通常会产生较大牵引载荷,当其超出飞机部件受力载荷限制,就会造成事故。因此,提出一种具有液压过载保护特性的牵引杆方案,并以B737-800机型为例,基于Adams建立了含接触碰撞的"牵引车-牵引杆-飞机"多体系统模型,对牵引飞机实施刹车过程进行仿真,对采用常规牵引杆和过载保护牵引杆的牵引载荷变化情况进行对比。结果表明,液压过载保护牵引杆可有效削减刹车时引起的牵引载荷峰值。
In normal conditions, huge towing loads will be produced by sudden brake due to various emer- gencies when aircraft are being towed. Once the loads exceed the loadlimit of aircraft＇s relevant compo- nents, ground accidents will occur. Given this, a towbar with hydraulic- overload- protection is designed and a contact- impact model of tractor- towbar- aircraft multi- body systems is established focusing on B737 - 800 on the base of Adams. Comparing the towing loads of the general towbar with the hydraulic- overload- protection towbar when the braking process of towing aircraft is simulated, it turns out that the hydraulic- overload- protection towbar can effectively reduce the peak of towing load caused by braking.
出处
《航空计算技术》
2016年第2期110-113,117,共5页
Aeronautical Computing Technique
基金
国家自然科学基金民航联合研究基金项目资助(U1233104)
