> The only reason for tilt-rotors is when you need to keep the main body of the aircraft level. Actually, a tilt-rotor can be manipulated to make the aircraft

> The only reason for tilt-rotors is when you need to keep the main body of the aircraft level. Actually, a tilt-rotor can be manipulated to make the aircraft go where you want it to. The same idea explains how helicopters make their way across the landscape.