高超声速跳跃-滑翔弹道方案设计及优化

Design and optimization of hypersonic skip-glide trajectory

针对常规弹道导弹突防能力差、成本高的缺点,提出了一种高超声速跳跃-滑翔弹道方案。以某弹道导弹为例,通过采用高升阻比外形和末级发动机多次点火技术,将其再入弹道设计成大气层边缘的跳跃-滑翔弹道,并以航程为目标对弹道进行了优化。结果表明,跳跃-滑翔弹道能大幅增加导弹航程,同时还具有较强的突防能力,而且当跳跃幅度较大时,还可减轻气动加热;优化后导弹的航程进一步增加,跳跃幅度减小,热流峰值减小,加热时间和总气动加热量增加。

Aiming at the defects of low ability of penetration and high cost of ballistic missiles, a hypersonic skip-glide trajectory was introduced. Based on a certain ballistic missile, a skip-glide trajectory across the atmosphere was designed with a high lift drag ratio figuration and final-stage motors which can be ignited several times, and the trajectory was optimized to maximize the range. The results show that effective range extension and high ability of penetration can be achieved. And also the aerodynamic heating will be reduced when the skip is large, the range can be further extended, and skip magnitude and peak heat flow can be reduced, while heating time and total aerodynamic heating is increased after optimization.