The gearbox is an extremely heavy, failure prone, and complicated part of all helicopters. The gearbox alone typically weighs between 10 and 30% of the total dr

The gearbox is an extremely heavy, failure prone, and complicated part of all helicopters. The gearbox alone typically weighs between 10 and 30% of the total dry weight of the helicopter. So replacing it with electrical drives does sound very attractive - and not just for the Osprey.