Abstract: A remotely controlled model airplane includes a receiver responsive to signals from a transmitter to control the direction of flight of the model airplane. The receiver, powered by a battery, demodulates the signal transmitted by the transmitter to selectively energize an electrical coil to generate a magnetic field of a first or second polarity. A rudder pivotally attached to the vertical stabilizer includes a magnet responsive to the magnetic fields generated and is urged in one direction or the other resulting in commensurate pivotal movement of the rudder. A hinge interconnecting the rudder and vertical stabilizer urges return to center of the rudder after it has been deflected left or right by the magnet responding to the magnetic field created as a result of a signal transmitted by the transmitter. An electric motor also under control of the transmitter and receiver may be incorporated to rotate a propeller to provide thrust and forward motion of the model airplane.

Abstract: A directional control system for a land, water or airborne vehicle is provided by thrust generated by a selectively actuatable motor coupled to a propeller to produce thrust laterally and cause rotation of the vehicle about its vertical axis. Such thrust, coupled with forward motion of the vehicle will provide directional control left or right, depending upon the direction of rotation of the thrust producing propeller. Controls for operation of the motor driving the thrust producing propeller may be effected by a conventional radio control transmitter and receiver.