常规战斗机往往需要采用大垂尾,甚至倾斜双垂尾布局,这就需要付出气动性能(尤其超音速阻力性能)和重量代价。而对于具有超音速巡航能力的战斗机,超音速阻力特性往往是设计临界点之一,垂尾的代价是昂贵的。减小垂尾尺寸,甚至完全取消垂尾,既可减小雷达反射面积,又可降低超音速阻力,还可能减轻重量,因此,无垂尾战斗机方案越来越受到重视。 Conventional fighters often need to adopt a large tail, or even tilted double vertical tail layout, which need to pay the aerodynamic performance (especially supersonic drag performance) and the weight of the price. For fighter jets with supersonic cruise capability, supersonic drag characteristics are often one of the design critical points, and the cost of the tail is expensive. Reducing the size of the vertical tail, or even eliminating the vertical tail completely, can reduce the radar reflection area, reduce the supersonic drag and reduce the weight. Therefore, the scheme of the non-tail-fighter has attracted more and more attention.