轻型涡轮螺旋桨攻击机的经济性不仅比喷气式战斗机优越，与武装无人机相比也毫不逊色。
It is not only jets that light-attack turboprops can outperform. Armed drones have drawbacks, too.
中国制造的“亿航184”无人机拥有四个螺旋桨。
根据该公司介绍，此无人机配有一个带有8个螺旋桨的多转子系统，即使多个系统失效，也可提供更优途径使其安全着陆。
According to the company, the drone is equipped with a multi-rotor system with 8 propellors, giving better odds to safely land even if multiple systems fail.
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