This paper proposes a synergetic synthesis method for the control laws of fixed-wing unmanned aerial vehicle (UAV) for longitudinal and lateral motion in the presence of wind disturbances. The main purpose of this work is to study the behavior of UAV with synthesized synergetic control laws of longitudinal and lateral motion when they are combined together. The effectiveness of the proposed approach to the synergetic synthesis of control strategies is proved by the results of computer modeling. The developed software allows the synthesis and modeling of closed-loop UAV control systems in accordance with the proposed procedure of the method of synergetic synthesis of the control laws of longitudinal and lateral motion of UAV under the influence of wind disturbances. Ключевые слова: БПЛА с жёстким крылом, продольное движение, боковое движение, нелинейное управление; синергетическая теория управления, ветровые возмущения; инвариантное многообразие.