近年来，美国迅速推进“下一代空中主宰”（NGAD）项目发展，以期适应未来的高端信息化战争，夺取制空优势。从曝光的概念图看，各种NGAD方案均采用翼身融合设计，取消了传统的平尾和垂尾，以追求极致的隐身性能，但却给飞机的纵、航向飞行控制带来了严峻挑战。本文透过NGAD布局详细探讨了可能存在的重心焦点匹配、航向静不稳定、航向控制效能等方面的可控性问题，并针对性提出了放宽最大低头设计边界、极限迎角限制能力、航向倍幅时间等可控性评估准则，可为此类飞机的总体布局提供设计支撑。

In recent years， the United States has rapidly promoted the development of the “Next Generation Air Dominance” （NGAD） program， in order to adapt to future high-end information warfare and seize air supremacy. Judging from the exposed conceptual map， various NGAD solutions adopt the wing-body fusion design， canceling the traditional flat tail and vertical tail to pursue the ultimate stealth performance， which however brings severe challenges to the longitudinal and yaw flight control of the aircraft. In this paper， the controllability problems of center of gravity focus matching， yaw static instability， and yaw control efficiency are discussed based on the NGAD layout， and the controllability evaluation criteria such as relaxing the design boundary of the maximum head bow， the limiting ability of the ultimate angle of attack， and the yaw doubling time are proposed， which can provide design support for the overall layout of aircraft with this layout.