弹性整流罩低空分离仿真及影响因素分析

随着天地往返运载器（Reusable Launch Vehicles，RLV）的发展，整流罩低空大过载分离的应用日趋广泛，气动力、大过载对分离的影响成为当前研究的重点。基于ABAQUS建立整流罩复杂蒙皮桁条结构的完整弹性体模型，对低空大过载分离的影响因素进行仿真分析，结果表明气动力、大过载均会增加分离的难度，气动力的存在有助于减小铰链根部变形，过载则会加剧铰链根部变形。通过与火箭撬加速整流罩分离试验结果进行对比分析，验证了该仿真分析的正确性，并进一步提出了改进意见。

Elastic Fairing Separation Simulation and Influence Factors Analysis at Low Altitude

With the Reusable Launch Vehicles (RLV) development, fairing separation at low altitude and high acceleration environment have increasingly widespread application, the effect of aerodynamic force and high acceleration on fairing separation is the focus of current research. This study builds a complete elastic model of fairing with complicated skin stringers structure based on ABAQUS, analyzes the influencing factors to separation at low altitude and high acceleration environment. The results show that aerodynamic force and high acceleration can increase the difficulty of separation. Hinge roots have smaller deformation with aerodynamic force, when high acceleration has the opposite effect. Finally, the Rocket Sled accelerated fairing separation test results were analyzed to verify the correctness of the simulation analysis, and further proposed improvements.