航空学报 > 2025, Vol. 46 Issue (24): 231861-231861   doi: 10.7527/S1000-6893.2025.31861

固体力学与飞行器总体设计

考虑轮轴点载荷测量的起落架落震试验

刘文斌1,2, 周正旺3, 尤颖1(), 陈熠4, 王友善2   

  1. 1.上海飞机设计研究院,上海 201210
    2.哈尔滨工业大学 航天学院,哈尔滨 150001 3.航空工业飞机起落架有限责任公司,长沙 410200 4.航空工业飞机强度研究所,西安 710065
  • 收稿日期:2025-02-10 修回日期:2025-03-28 接受日期:2025-04-11 出版日期:2025-04-27 发布日期:2025-04-25
  • 通讯作者: 尤颖 E-mail:youying@comac.cc
  • 基金资助:
    中国商飞公司科技创新专项(Y24GS29)

Landing gear drop test considering wheel axle load measurement

Wenbin LIU1,2, Zhengwang ZHOU3, Ying YOU1(), Yi CHEN4, Youshan WANG2   

  1. 1.Shanghai Aircraft Design & Research Institute,Shanghai 201210,China
    2.School of Astronautics,Harbin Institute of Technology,Harbin 150001,China
    3.AVIC Aircraft Landing Gear Co. ,Ltd. ,Changsha 410200,China
    4.AVIC Aircraft Strength Research Institute,Xi’an 710065,China
  • Received:2025-02-10 Revised:2025-03-28 Accepted:2025-04-11 Online:2025-04-27 Published:2025-04-25
  • Contact: Ying YOU E-mail:youying@comac.cc
  • Supported by:
    COMAC Technological Innovation Special Project(Y24GS29)

摘要:

起落架落震试验是关键的起落架动力学试验,但当前普遍仅关注轮胎接地点载荷的研究,对轮轴点载荷的关注非常少,两者之间的差异未得到详细的研究。轮轴点载荷作为直接向上传递给机体的载荷,对于起落架着陆载荷的验证以及飞机机体载荷设计而言都具有更大的价值,有必要开展考虑轮轴载荷测量的落震试验研究。为此,基于某大型民用飞机油气式双轮起落架的研制需求:首先,结合落震试验原理对起落架着陆载荷的特性进行研究,提出了在铰点布置三向力传感器进行轮轴点载荷等效测量的方法;其次,开展了垂向和水平加载的前置试验,对轮轴点载荷的测量效果进行了初步验证;最后,进行了不同转速工况的正式落震试验,并从轮轴点与接地点载荷差异的角度,对具体的动态载荷数据和其他动力学特性进行了详细的分析。可以为后续起落架系统设计与试验技术的提升提供参考。

关键词: 起落架, 落震试验, 着陆载荷, 轮胎, 动力学

Abstract:

The landing gear drop test is a crucial dynamic test for the landing gear. However, current research generally focuses only on the load at the tire ground contact point, with very little attention paid to the load at the wheel axle point. The difference between the two has not been studied in detail. As the load directly transmitted upward to the aircraft body, the load at the wheel axle point is of greater value for the verification of the landing gear landing load on the design of the aircraft body load. Therefore, it is necessary to carry out research on the drop test considering the measurement of the wheel axle load. To address this, based on the development requirements of the oleo-pneumatic dual-wheel landing gear of a certain large civil aircraft, the following work was carried out. First, the characteristics of the landing loads are studied in combination with the principle of the drop test, and a method of using three-axis force sensors arranged at the hinge points to equivalently measure the load at the wheel axle point is proposed. Second, preliminary tests of vertical and horizontal loading are performed to preliminarily verify the measurement effect of the load at the wheel axle center. Finally, formal drop tests under different rotational speed conditions are conducted, and from the perspective of the load difference between the wheel axle point and the ground contact point, the specific dynamic load data and other dynamic characteristics are analyzed in detail. The results provide a reference for the subsequent improvement of the landing gear system design and test technology.

Key words: landing gear, drop test, landing loads, tire, dynamic

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