AB is so fun to watch <| sep |> This is just the same stuff we said to each other as kids . What if we are all actors in someone else ' s dream ? How would we know ? If he actually believes this , why is he trying to go into so hard ? <| sep |> Copied from uskimfreak 92 ' s comment somewhere elseIt most certainly is not a helicopter . A helicopter derives both lift and propulsion from one or more horizontally spinning blades . This definition is used throughout aeronautics when revering to helicopters specifically . The Eurocopter X 3 is classified as a ' compound helicopter '. While it may have helicopter in the name , it is not to say that it meets the definition of a helicopter . It does not . Here a website that provides the United States Federal Aviation Regulations definition for a helicopter . A wingless aircraft acquiring its lift from revolving blades driven by an engine about a nearvertical axis . A ROTORCRAFT acquiring its primary motion from enginedriven rotors that accelerate the air downward , providing a reactive lift force , or accelerate the air at an angle to the vertical , providing lift and thrust .