초록 ▼

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 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. By employing a transmitter to selectively transmit a plurality of signals, control surfaces of the model airplane can be deflected to provide 2-axis control to selectively alter the direction and pitch of the model airplane.

대표청구항 ▼

I claim: 1. A remotely controlled model airplane, said airplane comprising in combination: a) a vertical stabilizer; b) a rudder; c) a flexible hinge for urging said rudder into alignment with said vertical stabilizer; d) a coil mounted to said vertical stabilizer; e) a magnet attached to said rudd

I claim: 1. A remotely controlled model airplane, said airplane comprising in combination: a) a vertical stabilizer; b) a rudder; c) a flexible hinge for urging said rudder into alignment with said vertical stabilizer; d) a coil mounted to said vertical stabilizer; e) a magnet attached to said rudder proximate said coil; f) a receiver responsive to a radio frequency signal for generating a control signal to energize said coil and create a magnetic field for urging repositioning of said magnet to deflect said rudder relative to said vertical stabilizer. 2. The remotely controlled airplane as set forth in claim 1, including a transmitter for generating a radio frequency signal and for transmitting the radio frequency signal to said receiver, said receiver including an antenna for receiving the radio frequency signal and a demodulator for demodulating said radio frequency signal to generate said control signal. 3. The remotely controlled airplane as set forth in claim 1 wherein said flexible hinge includes a pair of segments of rubber bands attaching said rudder with said vertical stabilizer. 4. The remotely controlled airplane as set forth in claim 3 wherein said coil is mounted on said vertical stabilizer intermediate said pair of segments. 5. The remotely controlled airplane as set forth in claim 4 wherein said magnet is mounted at the leading edge of said rudder and generally centered on said coil. 6. The remotely controlled airplane as set forth in claim 1, including a propeller and motor for providing forward thrust. 7. The remotely controlled airplane as set forth in claim 6 wherein said receiver includes means for generating a further control signal to vary the thrust provided by said propeller. 8. The remotely controlled airplane as set forth in claim 7, including a transmitter for generating a radio frequency signal and for transmitting the radio frequency signal to said receiver, said receiver including an antenna for sensing the radio frequency signal and a demodulator for demodulating said radio frequency signal to generate said control signal and said further control signal. 9. The remotely controlled airplane as set forth in claim 6 wherein said flexible hinge includes a pair of segments of rubber bands for attaching said rudder with said vertical stabilizer. 10. The remotely controlled airplane as set forth in claim 9 wherein said coil is mounted on said vertical stabilizer intermediate said pair of segments. 11. The remotely controlled airplane as set forth in claim 10 wherein said magnet is mounted at the leading edge of said rudder and generally centered on said coil. 12. A control apparatus for a model airplane having a longitudinal axis, said control apparatus comprising in combination: a) a vertical stabilizer having a rudder pivotally attached with a flexible hinge, said flexible hinge urging planar alignment of said rudder with said vertical stabilizer; b) an electrical coil mounted on said vertical stabilizer; c) a magnet mounted on said rudder, said magnet being moveably responsive to energization of said coil to deflect said rudder relative to said vertical stabilizer; and d) a radio control transmitter for transmitting a signal to receiver to selectively energize said coil to control the direction of travel of said model airplane. 13. A control apparatus for a model airplane as set forth in claim 12 wherein said hinge comprises at least a pair of segments of rubber bands, each of said segments interconnecting said vertical stabilizer with said rudder. 14. A control apparatus for a model airplane as set forth in claim 13 wherein said magnet is attached to said rudder intermediate said pair of segments. 15. A control apparatus for a model airplane as set forth in claim 12 wherein said coil includes an axis of rotation and wherein said axis of rotation is essentially parallel with the longitudinal axis of said model airplane. 16. A control apparatus for a model airplane as set forth in claim 15 wherein said magnet includes a magnetic axis having a north pole and a south pole essentially aligned with said magnetic axis and wherein said magnetic axis is orthogonal to said axis of rotation when said coil is not energized. 17. A control apparatus for a model airplane as set forth in claim 16 wherein said coil includes a first state of energization to create a first magnetic field to attract the north pole of said magnet and cause deflection of said rudder in one direction and a second state of energization to create a second magnetic field to attract the south pole of said magnet and cause deflection of said rudder in the other direction. 18. A method for controlling the direction of flight of a model airplane, said method comprising the steps of: a) a radio frequency transmitter and receiver for generating a control sign to energize an electrical coil mounted on the vertical stabilizer of the model airplane; b) selectively energizing the coil with the transmitter and receiver to create a first or a second magnetic field; c) deflecting the rudder of the model airplane attached to the vertical stabilizer with a magnet mounted on the rudder and pivotally responsive to each of the first and second magnetic fields created by the coil to deflect the rudder in one direction or the other; and d) urging the rudder to remain undeflected in the absence of a magnetic field with a hinge interconnecting the rudder with the vertical stabilizer. 19. The method as set forth in claim 18 wherein said step of urging is carried out by a pair of segments of rubber bands interconnecting the rudder with the vertical stabilizer. 20. A remotely controlled model airplane, said airplane comprising in combination: a) a vertical stabilizer, a rudder, and a flexible hinge interconnecting said vertical stabilizer with said rudder for urging said rudder into alignment with said vertical stabilizer; b) a coil mounted to said vertical stabilizer and a magnet mounted to said rudder proximate said coil; c) a horizontal stabilizer, an elevator and a further flexible hinge interconnecting said horizontal stabilizer with said elevator for urging said elevator into alignment with said horizontal stabilizer; d) a further coil mounted to said horizontal stabilizer and a further magnet mounted to said elevator proximate said further coil; and e) a receiver responsive to a radio frequency signal for selectively generating first and second control signals to energize said coil and said further coil and create magnetic fields for urging repositioning of said first and second magnets, respectively, and said further magnetic to deflect said rudder and said elevator relative to said vertical stabilizer and said horizontal stabilizer, respectively. 21. The remotely controlled airplane as set forth in claim 20, including a transmitter for selectively generating radio frequency signals and for transmitting the radio frequency signals to said receiver, said receiver including an antenna for receiving the radio frequency signals and a demodulator for selectively demodulating said radio frequency signals to generate said first and second control signals. 22. The remotely controlled airplane as set forth in claim 20 wherein each of said flexible hinge and said further flexible hinge includes a pair of segments of rubber bands attaching said rudder with said vertical stabilizer and a further pair of segments of rubber bands for attaching said elevator with said horizontal stabilizer, respectively. 23. The remotely controlled airplane as set forth in claim 22 wherein said coil is mounted on said vertical stabilizer intermediate said pair of segments and wherein said further coil is mounted on said horizontal stabilizer intermediate said pair of segments. 24. The remotely controlled airplane as set forth in claim 23 wherein said magnet is mounted at the leading edge of said rudder and generally centered on said coil and wherein said further magnet is mounted at the leading edge of said elevator generally centered on said further coil. 25. A remotely controlled model airplane having a V-tail, said airplane comprising in combination: a) a first control surface, a first stabilizer of the V-tail and a flexible hinge interconnecting said first control surface with said first stabilizer for urging said first control surface into alignment with said first stabilizer; b) a second control surface, a second stabilizer of the V-tail and a further flexible hinge interconnecting said second control surface with said second stabilizer for urging said second control surface into alignment with said second stabilizer; c) a first coil mounted to said first stabilizer and a first magnet mounted to said first control surface proximate said first coil; d) a second coil mounted on said second stabilizer and a second magnet mounted on said second control surface proximate said second coil; and e) a receiver responsive to a radio frequency signal for generating control signals to selectively energize said first and second coils and create magnetic fields for urging repositioning of said magnets to deflect said first and second control surfaces relative to said first and second stabilizers, respectively. 26. The remotely controlled airplane as set forth in claim 25, including a transmitter for selectively generating radio frequency signals and for transmitting the radio frequency signals to said receiver, said receiver including an antenna for receiving the radio frequency signals and a demodulator for selectively demodulating said radio frequency signals to generate said control signals. 27. The remotely controlled airplane as set forth in claim 25 wherein each of said flexible hinge and said further flexible hinge includes a pair of segments of rubber bands attaching said first control surface with said first stabilizer and a further pair of segments of rubber bands for attaching said second control surface with said second stabilizer. 28. The remotely controlled airplane as set forth in claim 27 wherein said first and second coils are mounted on said first and second stabilizers, respectively, intermediate said corresponding pair of segments. 29. The remotely controlled airplane as set forth in claim 28 wherein said first and second magnets are mounted at the leading edge of said first and second control surfaces, respectively, generally centered on said first and second coils, respectively. 30. A remotely controlled flying wing model airplane, said airplane comprising in combination: a) a first elevon and a second elevon for controlling movement of said airplane about its longitudinal axis and its pitch axis; b) a first flexible hinge interconnecting said first elevon with said airplane for urging said first elevon into alignment with said flying wing; c) a second flexible hinge interconnecting said second elevon with said airplane for urging said second elevon into alignment with said flying wing; d) a first coil mounted to said flying wing and a first magnet mounted to said first elevon proximate said first coil; e) a second coil mounted to said flying wing and a second magnet mounted to said second elevon proximate said second coil; and f) a receiver responsive to a radio frequency signal for selectively generating first and second control signals to energize said first coil and said second coil and create magnetic fields for urging repositioning of said first magnet and said second magnet to deflect said first elevon and said second elevon, respectively, relative to said flying wing. 31. The remotely controlled airplane as set forth in claim 30, including a transmitter for selectively generating radio frequency signals and for transmitting the radio frequency signals to said receiver, said receiver including an antenna for receiving the radio frequency signals and a demodulator for selectively demodulating said radio frequency signals to generate said first and second control signals. 32. The remotely controlled airplane as set forth in claim 30 wherein each of said first flexible hinge and said second flexible hinge includes a first pair of segments of rubber bands for attaching said first elevon with said flying wing and a second pair of segments of rubber bands for attaching said second elevon with said flying wing. 33. The remotely controlled airplane as set forth in claim 32 wherein said first and second coils are mounted on said flying wing intermediate said first and second pair of segments, respectively. 34. The remotely controlled airplane as set forth in claim 33 wherein said first and second magnets are mounted at the leading edge of said first and second elevons generally centered on said first and second coils, respectively.