新一代运载火箭整体起竖系统对地载荷研究

Study on the Load to Ground on the New Generation Launch Vehicle Erection Process

为保障新一代运载火箭快速发射的安全性,需对湿陷性黄土场区内预设起竖系统固定设施对地载荷进行研究。采用解析法建立力学模型,推导出起竖系统在不同风载作用下起竖全过程中的对地载荷。通过压力监测装置采集到起竖过程油缸内腔压力,用以计算油缸实际受力曲线,该曲线与理论数据非常接近,变化趋势一致,从而验证计算模型的正确性,可作为发射场坪选取、建设的依据。

To safeguard the security of the new generation launch vehicle speedy emission, the load to ground in the orthogonal experiment coverage was studied. The mechanics model was formulated by the analytical method, and the load to ground in erecting process was calculated while the influence of wind load was considered, hydraulic cylinders＇ pressure parameter was yielded through using pressure data acquisition system, and the data acquisition result is analyzed with real measuring data. The analyzed result showed that amplitude and variation trend of the force were in well match with theoretical calculation results, and the computation result was rational, which offerring references to selecting and building of launching site.