[Tom] isn’t building drones for use in a vacuum, although we can certainly see a use case for such devices. This is more of a hybrid affair, with counter-rotating props mounted in a centrally ...

In the world of drones, propeller choice is key to performance ... 2 must be reversed in the Y-axis to print a counter-rotating set of 4. The instructions used for creating propellers in Fusion3D ...

Attack helicopters armed with cannons are finding new missions countering drones in Israel and Ukraine, but they're no ...

Designed by Louis de Monge, the low wing monoplane featured two engines, both mounted aft of the pilot (nearly end-to-end), driving twin counter rotating propellers through long drive shafts.