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针对日益复杂的战场环境对飞行器性能的需求,为了进一步拓宽现有飞行器的性能包线,研究了一种基于剪切变后掠翼的概念飞行器。分析了这类变后掠翼飞行器不同后掠角的升阻比特性,提出了保持最优气动特性滑翔飞行的攻角和后掠角变化的一般规律。采用Radau伪谱法(RPM)分别对可变后掠翼飞行器与固定翼飞行器的弹道以最大射程为目标进行优化,结果表明剪切变后掠翼战术导弹射程最优弹道具有明显的优势,且后掠角、攻角的优化结果与气动特性分析得到的规律一致。
In order to further broaden the performance envelope of the existing aircraft against the increasingly complex requirements of aircraft performance in the battlefield environment, a concept aircraft based on a shear-swept wing is studied. The lift-drag ratio characteristics of such swept-back wing aircraft with different swept angles are analyzed. The general law of variation of the angle of attack and the sweep of the gliding flight with the optimum aerodynamic characteristics is proposed. Radau pseudospectral method (RPM) was used to optimize the trajectory of variable-pitch and fixed-wing aircraft with the maximum range as the goal. The results show that the optimal trajectory of shear-swept forward-wing tactical missile has obvious advantages and The sweep angle and the angle of attack are optimized according to the aerodynamic characteristics.