56 this further control signal is of opposite polarity as discussed above and the magnetic field produced by the coil is of opposite polarity also as a result pole 84 of magnet 76 will be attracted to the coil such attraction will result in commensurate movement of the magnet and rudder 24 coupled with the magnet the extent of movement is represented by dashed line 86 with the rudder in this position model airplane 10 will turn to the right on release of button 60 the magnetic field generated by coil 58 will cease and neither pole 80 or 84 of magnet 76 will be attracted to the coil hence rudder 24 will once again will become essentially aligned with vertical stabilizer 20 in response to urging by rubber bands 72 74 as a result the model airplane will once again fly straight ahead as illustrated in fig2 the model airplane may include an undercarriage 90 to permit taxiing on a surface and to take off along a simulated runway similarly the undercarriage will permit landing on a smooth surface in the manner of a conventional airplane during such taxiing and take off buttons 50 and 60 on transmitter 30 may be actuated to control the direction of movement of the model airplane during.