Abstract: The present invention provides an improved alternator system in which the magnetic flux modulating sleeve is carried by the rotor and rotates with the rotor. The position of the sleeve on the rotor is adapted to be adjusted during operation of the alternator while the rotor and sleeve are rotating. The repositioning of the sleeve on the rotor during rotation beneficially provides a more constant voltage output during load and speed variations. Concurrent rotor and sleeve rotation reduces eddy current losses in the magnetic circuit and increases alternator efficiency. The alternator of the invention is estimated to provide a constant voltage for a 10:1 variation in either electrical load (in OHMS) or rotor angular velocity (revolutions per minute, RPM), or a combined 10:1 variation of electrical load and rotor angular velocity.

Abstract: What is proposed by the invention is a fin deployment mechanism for missiles in which a fin member can be extended from or retracted to the contour of a missile by means of a rotary to linear motion transmission system employing a rotatable screw shaft having respective adjacent portions embodying a left hand and a right hand thread for supporting respective ones of a pair of screw nuts, each of which are provided with a cam slot for receiving a cam follower mounted on the fin member, or fin supporting member, so that when the screw shaft rotates the screw nuts are caused to move therealong in mutually opposite directions and via the cooperation between the cam slots and the cam followers the fin is caused to rotate through a given angle. In each of the extreme positions of the fin member a locking engagement is effected for retaining such positions in a locked condition.