You should try the following books:
1. "Aircraft Flight Control Actuation System Design", by Raymond, E.T., Chenoweth, C.C.; ISSN: 1-56091-376-2
2. "Aircraft Systems: Mechanical, Electrical and Avionics Subsystems Integration", by Moir, I., Seabridge A.; ISSN: 1-56347-506-5...
First
The laminations material has no effect on pick up, as long as it isn not electrostatic shielding the poles.
The poles should be some Ni-Steel alloy, but any ferro-magnetic Steel will do. The magnets are the main problem to purchase. Perhaps it is possible to remagnetize?
Gyro,
The washers I ment are per standard DW (for example DW06SS). You do not sunk into material, the sunk is in washer.
By perhaps cutting out the bottom part a bit, as you mentioned, there should be enough room. By the way this solution provides dissipation of static electricity from fairing...
Trying to evaluate new drive concepts I try to figure out failure principles and statistics about function safety.
Has anyone seen "overview"-information?