I personaly think that what you want to do is not posible.The control of a Heli depends alot on weight and balence from the fuselage hanging below the Rotarywing.Putting the Rotarywing under the Fuselage would take away any control at all? I think Heli's are dislecsic anyway! The self rotating wing is the way to go. Check out my prototype.It's a much more efficiante way to get airborn!