| 摘要: |
| 考虑海上发射环境特殊性，分析了发射船承受的典型海浪以及风环境，针对陆基发射时运载火箭直接坐落在发射台上的裸箭热发射方式，分析了该支撑形式在海上动态环境下的射前稳定性，获得海上裸箭热发射方式的承受晃动极限。为解决陆基热发射支撑方式不满足三级海况发射稳定性的问题，提出运载火箭的框架式扶稳措施，通过框架内的柔性支撑保证运载火箭的射前稳定性。构建由火箭、等效甲板、导向框架、导轨、柔性支撑、发射台等组成的发射系统动力学仿真模型，开展复杂海况条件下的发射动力学分析，获得了框架式热发射方式在典型海况条件下，不同因素对火箭出框过程飞行姿态、安全间隙等影响规律，可为运载火箭框架式热发射的海上动基座发射动力学安全性评估提供技术支撑，并用于框架式热发射方式的海上动基座环境适应性的综合评价。 |
| 关键词: 运载火箭 热发射 动基座 稳定性 发射动力学 |
| DOI： |
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| 基金项目: |
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| Analysis of Dynamic Effects and Influencing Factors for Typical Maritime Thermal Launch |
| HE Li,ZHANG Boyu,CHEN Shiye,ZHANG Yongkuo,ZHANG Yunqiao |
| (Beijing Institute of Space Launch Techology， Beijing 100076， China) |
| Abstract: |
| Considering the environmental particularity of the launch at sea, the paper analyzes the typical wave and wind environment of the launch ship. Aiming at the launch vehicle directly on the launch pad for land-based launch, the stability of this support form in the sea dynamic environment is analyzed, and the rocking limit of the launch vehicle is obtained. In order to solve the problem that the land-based thermal launch support method does not satisfy the three-stage sea launch stability, a frame stability support measure of carrier rocket is proposed, which ensures the pre-launch stability of carrier rocket through the flexible support in the frame. In this paper, a launch system dynamics simulation model composed of rocket, equivalent deck, guide frame, guide rail, flexible support and launch pad is constructed. Launch dynamics analysis under complex sea conditions is carried out. Through the analysis, the frame-type thermal launch mode is obtained under typical sea conditions. The influence laws of different factors on flight attitude and safety clearance of rocket during frame launch can provide technical support for the launch dynamic safety evaluation of sea mobile base for frame thermal launch of carrier rocket, and can be used for the comprehensive evaluation of environmental adaptability of sea mobile base for frame thermal launch. |
| Key words: Launch vehicle Thermal emission Moving base Stability Launch dynamics |