固定翼无人机

中国也提供固定翼无人机，比西方同一代型号落后。

China also offers fixed wing UAVs , which are about a generation behind Western models .

无人直升机由于其独特的飞行能力能够完成载人飞机和固定翼无人机无法完成的任务，成为了现代战争的重要组成部分，本文以航模直升机为基础，研究了无人直升机建模及控制系统设计。

Unmanned helicopter can complete the tasks which manned aircraft and fixed-wing UAV could not finish because of its unique ability . It is becoming an important part of modern warfare .

传统的固定翼无人机只能保证某一种飞行状态的性能达到最优，而变形翼无人机通过改变翼型、翼展和后掠角等来适应不同的飞行状况，能使其飞行性能达到最佳。

Traditional fixed-wing unmanned aerial vehicle ( UAV ) can only guarantee the optimal performance of a certain flight condition , while deformed wing UAV can adapt to different flight conditions then make the flight performance best through changing the airfoil , wingspan and sweep .