| 摘要 |
A missile or other moving body has a rotatable portion, first and second control members on the rotatable portion for separate actuation by first and second actuator mechanisms movable in response to the energisation of first and second electromagnetic coils forming part of the mechanisms and contained in the other portion of the missile of body. The coils are mounted in spaced relation along the rotary axis of the rotatable portion and concentric with respect thereto, with the first coil nearer to the rotatable portion than the second coil. The first actuator mechanism has an axially movable sleeve coaxial with the rotary axis and extending at one end into the rotatable portion and at the other end carrying an armature disc mounted concentrically with respect to the sleeve and in cooperating relation with the first coil which upon energisation causes the disc and the sleeve to move axially to effect actuation of the first control member. The second actuator mechanism has an axially movable shaft coaxial with the rotary axis and slidable within the sleeve, said shaft extending beyond the sleeve at each end, one end of the shaft extending into the rotatable portion of the missile or body and the other end carrying a further armature disc concentric with the shaft and arranged in cooperating relation with the second coil which upon energisation causes the further disc and the shaft to move axially to effect actuation of the second control member.
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