During testing, the X3 managed to reach to 293 mph - making it the fastest non-tilt-rotor helicopter in the world. The new patent offers a development on the original X3 design. What makes the new ...
KAZAN, November 23. /TASS/. Russia’s Defense Ministry has opted for the project of the Mil Design Bureau to create a cutting-edge fast-speed combat helicopter while the Kamov Design Bureau will ...