Human beings have long dreamt of Vertical Take Off and Landing (VTOL) air transportation vehicles.   Without the necessity of airports or airfields for take-off or landing and because of their versatility, helicopters have become the product of choice. Currently the tilt rotor aircraft (the Osprey), tilt nozzles VTOL jet (the Harrier), tail rotor helicopters, tandem rotor (Chinook), twin rotors (KMAX) choppers, and coaxial copters all perform the VTOL function.  Production cost issues make tail rotor helicopters the most popular and affordable.  Tail rotor helicopters generally perform more versatile missions than any other type of aircraft or rotorcraft.