Vertical flight with full control has been achieved with a wingless helicopter built by Igor Sikorsky, aeronautical engineer. Primitive in appearance, the ship is equipped with a variable pitch “windmill” rotor, two tiny rotors at the rear of the fuselage to act as elevators, and a third one serving as the rudder. Driven by a seventy-five horsepower engine, it ascended in a test flight straight up to a height of thirty feet, flew 200 feet around the field, and then came straight down to a safe landing. Further development of this type of aircraft, Mr. Sikorsky believes, may completely revolutionize flying.