星光导航成像的气动光学效应影响研究

给出了针对吸气式高超声速飞行器（ABHV）的飞推一体化参考轨迹，分析了其对星光导航成像影响。基于吸气式高超声速飞行器强耦合特性，结合星光成像导航技术特点，以飞推耦合度最小为优化指标，考虑ABHV的攻角、燃油当量比、攻角变化率和隔离段激波串位置等多约束特性，采用一种多约束最优化方法，得到了适合星光导航应用的参考轨迹，并分析了该轨迹下星光成像性能退化情况，进一步挖掘了发动机稳定工作和飞行器高精度打击等具有核心竞争力的总体性能指标的潜力。以某型ABHV为例，在精确的仿真模型基础上，进行了仿真分析，仿真结果表明，该方法有效、可靠。

Study on aero optical effect of star navigation imaging

An integrated aircraft/scramjet reference trajectory design method for ABHV was proposed. The influence on starlight navigation was analyzed. First, based on the characteristics of intricate coupling for hypersonic airbreathing vehicle and combined with the characters of starlight navigation system, minimizing the coupling degree between aircraft and scramjet was referred to as the optimization index. Second, considering multiple constraints of angle of attack, fuel equivalent ratio, angle of attack rate, shock train axial relative length, a smooth solution for multiple constrained optimal problems was adopted. Then, a reference trajectory which is good for starlight system was designed, and the degradation of navigation performance under this trajectory was analyzed. The trajectory design method can further tap the potential of the overall performance indicators with core competitiveness, such as scramjet stability and aircraft high-precision strike. Taking an ABHV as example, the simulation analysis was carried out on the basis of accurate simulation model. The simulation results show that the method is effective and reliable.