飞机前起落架收放回路液压阻尼影响研究

通过模拟某型飞机前起落架收放作动筒,探索收放液压回路阻尼（包括作动筒缓冲区）对前起落架放下性能的影响。经过仿真分析并经试验验证,减小收放液压回路阻尼可明显减少起落架放下时间,但对起落架克服气动载荷的能力帮助不大,此结论对带液压回路阻尼的机械系统具有较好的参考意义。

Study of the Effect of Hydraulic Damping on Nose Landing Gear in the Retraction/Extension Circuit

For simulating Extension/Retraction actuator of the NLG, it can help us to explore the hydraulic damping in the Extension/Retraction Circuit （including buffer of the actuator） which may affect the performance of Extension of the NLG. By simulating and test validating, if reducing the hydraulic damping in the Extension/Retraction Cir- cuit, the Landing Gear extending time is shorter, but it can＇t increase the damping force in order to overcome the aerodynamic load. In conclusion, this analysis result has some reference value to mechanical system which includes hydraulic damping in the Extension/Retraction Circuit.