Key Points and Summary - China's Type 039A Yuan-class submarine is an "ultra-quiet" attack boat equipped with Air-Independent Propulsion (AIP). -This key technology allows it to remain submerged for ...

Modern diesel submarines seem to break a basic rule of engines: they keep moving underwater even though diesel power needs oxygen. The trick is that these boats are really two propulsion systems in ...

Up, up, and away! That's the flight sequence for most commercially available drones. However, for drones powered by Aerix ...

The Indian Navy says it needs stealthy conventional submarines that can stay underwater for weeks. This is possible with the help of the air-independent propulsion (AIP) system technology that can ...