Missile having rotor ring

A method for determining the angle of pitch .alpha. of a fin of a missile having a rotor ring, the fin being mounted on the rotor ring and being adjustable, the fin being actuated by relative rotation between the rotor ring and the missile, at least two motors being arranged between the rotor ring and the missile and a control means being provided for switching the motors between motor and generator operation and for performing fin adjustment, the method comprising the steps of measuring displacement of traversing poles of both motors relative to each other and from said measurement, calculating the angle of pitch .alpha..

A method for determining the angle of torque .beta. between a fin of a missile and the missile in a missile having a rotor ring, the fin being mounted on the rotor ring and being adjustable, the fin being actuated by relative rotation between the rotor ring and the missile, at least two motors being arranged between the rotor ring and the missile and a control means being provided for switching the motors between motor and generator operation and for performing fin adjustment, the method comprising the steps of measuring a sum of traversing poles of one of the motors and from the measurement, calculating the angle .beta..

A method for determining the angle .delta. of the fin axis of a missile opposite a spatial coordinate system in a missile having a rotor ring, the fin being mounted on the rotor ring and being adjustable, the fin being actuated by relative rotation between the rotor ring and the missile, at least one motor being arranged between the rotor ring and the missile and a control means being provided for switching the motor between motor and generator operation and for performing fin adjustment, the method comprising the step of calculating the angle .delta. from the actual value of a rolling gyro and from the angle of torque .beta. between the fin and the missile.