When people think about drones, they usually imagine aerial drones, or unmanned aerial vehicles (UAVs). However, there are also underwater drones. Underwater drones, like aerial ones, go by different names and come in numerous variations. They may be referred to as unmanned undersea vehicles (UUV), autonomous undersea vehicles (AUVs) or underwater remotely operated vehicles (ROVs). …

Written by Shabbir Nooruddin Flying FPV is such a liberating and rewarding experience, and watching prop pilots that fly crazy fast, silky smooth, or doing dizzying flips is what draws most of us to the hobby to start with. If you’ve ever flown a quadcopter, though, you’ll know that the pros make these tricks seem much …