Curiosity got the better of me and I had to open it up. Surprise! After opening it and looking inside the mystery just gets bigger. What you see is a armature and field like what you would find in a motor. Its got a heavy epoxy like coating on all the windings
Here the armature is pulled out and you can see two wires going to it from inside. Because the armature is only allowed to move just a little bit , there is no need for brushes as it is only allowed to turn about 1 degree.
Here are the electrical contacts on the outside. The two wires going to the armature go to the two outside ones marked P1 and P2. Reading across them you get 16 ohms. The other conectors are pairs and they go to two seperate windings within the field. They each read 16 ohms.
The shaft of the armature sticks out this side thru the bracket there in the center which fits in a slot that has a strong spring loaded pin and on the other side of it is an adjusting screw to balance and adjust the unit. All I can figure is that its part of a larger system that balances the rotational opposing magnetic forces of the armature and the fields and by adjusting the armatures clock position they are varying one magnetic field against the other. Why? Search me! Must be Russian! Seems to me that its the hard way to get to where they want to go. I dont know. But its interesting nevertheless. Two different cultures traveling down two different roads in their aim to acheive the same thing, to launch a missle.
There are OLD pilots and there are BOLD pilots but there are very few OLD BOLD pilots. MAG