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针对目前机载飞行器上广泛采用的固定式吊耳凸起高度高、气动阻力大的问题,设计了一种新型的翻倒式吊耳,确定了承载结构和翻倒机构的组合结构形式。提出了“吊耳——三支耳”式承载结构,采用基于ABAQUS的有限元分析得到其承受设计载荷时各部位的应力水平;提出了弹簧式翻倒机构,采用基于ADAMS的动力学分析得到其在气动阻力作用下的翻倒时间。最后通过静力试验及翻倒试验,验证了翻倒式吊耳设计与分析的正确性,得出其各项性能满足指标要求的结论。
Aiming at the problem of high lug height and large aerodynamic drag widely used on airborne aircraft, a new type of overturning lug was designed and the combined structure of load bearing structure and overturning mechanism was determined. The “lug-three lugs” bearing structure is proposed. The stress of each part is obtained by ABAQUS-based finite element analysis. The spring-type overturning mechanism is proposed, and the dynamic response based on ADAMS Analysis of the pneumatic overturning time under the action of resistance. Finally, through the static test and the overturning test, the correctness of the design and analysis of the overturned lugs is verified, and the conclusion that each performance meets the index requirements is obtained.