Experimental Research and Analysis on Dynamics Characteristics of Arresting Hook Buffer
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摘要: 开展了舰载机拦阻钩缓冲器动力学特性研究，提出了舰载机拦阻钩缓冲器动态力学特性及拦阻钩系统冲击性能试验方法，搭建了试验系统，进行了拦阻钩系统垂向冲击试验，揭示了拦阻钩缓冲器阻尼力随行程的变化规律。结果表明，缓冲器初始充填压力较小时，不利于拦阻钩顺利挂索，通过提高缓冲器初始充填气体压力，可以有效提高拦阻钩止转性能，有利于拦阻钩顺利挂索。将缓冲器动态阻尼特性曲线引入冲击环境下的拦阻钩纵向运动分析模型，对拦阻钩反弹高度计算结果与试验实测数据进行比较。结果表明，反弹高度计算曲线有效地反映了拦阻钩钩头的运动特点，计算结果在弹跳高度和弹跳时间上均大于试验测试结果，分析说明了计算误差产生的原因。Abstract: The research on the dynamic characteristics of the Arresting hook buffer for carrier-based aircraft is carried out. The dynamic mechanical characteristics of the arresting hook absorber for the carrier-based aircraft and the test method for the impact performance of the blocking hook system are put forward. The experimental system is set up and the vertical impact test of arresting hook system is carried out, revealing the changing law of the damping force of the arrester bumper with the stroke. The results show that when the initial filling pressure of the damper is small, it is not conducive to arresting the hook smoothly. By improving the initial gas pressure of the damper, the stopping performance of the arresting hook can be effectively improved, and the blocking hook can be hung smoothly. The dynamic damping characteristic curve of shock absorber was introduced into the analysis model of longitudinal motion of arresting hook under impact condition. The calculation results of rebound height of arresting hook are compared with the experimental data. The results show that the curve of rebound height reflects the motion of barricade. The results show that the calculated results are larger than the test results in both the bouncing height and the bounce time. Finally, the reasons for the calculation error were analyzed and explained.
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Key words:
- carrier-based aircraft /
- arresting hook /
- test /
- buffer /
- dynamics property /
- experimental system
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