主管单位：中华人民共和国工业和信息化部
主办单位：西北工业大学 中国航空学会
地 址：西北工业大学友谊校区航空楼
主办单位：西北工业大学 中国航空学会
地 址：西北工业大学友谊校区航空楼
1.中国飞机强度研究所;2.沈阳飞机设计研究所
V216
Aircraft Strength Research Institute of China
油—气式缓冲器内部的油液特性及充气压力会随环境温度而变化，进而影响起落架的缓冲性能。为了探究温度对油—气式起落架缓冲性能的影响，在起落架落震试验的基础上，提出一种缓冲器环境温度模拟方法，并分析油—气式起落架缓冲器在20~80 ℃环境温度下的缓冲性能。结果表明：在所研究的温度范围内，缓冲器初始充气压力对温度变化敏感，随着温度的升高，缓冲器内部空气弹簧刚度增大而油液阻尼力减小，起落架系统的地面垂直载荷变大而缓冲系统效率系数降低，温度对油—气式起落架缓冲器性能影响显著。
The oil characteristics and inflation pressure inside the oil-air shock absorber will change with the ambient temperature, which will affect the cushioning performance of landing gear. In order to explore the effect of temperature on the cushioning performance of oil-air landing gear, this paper proposes a buffer environment temperature simulation method based on the landing gear drop shock test, and studies the cushioning performance of oil-gas landing gear buffer at ambient temperature from 20 ℃ to 80 ℃. The results show that within the studied temperature range, the initial inflation pressure of the buffer is sensitive to the change of temperature. With the increase of temperature, the stiffness of the air spring in the buffer increases and the oil damping force decreases, the ground vertical load of the landing gear system increases and the efficiency coefficient of the buffer system decreases. The temperature has a significant impact on the performance of the oil-gas landing gear buffer.
胡锐,牟让科,宋得军,陈熠.温度对油—气式起落架缓冲性能的影响研究[J].航空工程进展,2022,13(3):150-156
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