Field mill is a specialized instrument used for measuring the strength of electrical fields in the atmosphere near thunderstrom clouds. They are used in the launch criteria for the Space Shuttle to avoid lightning strikes.
The "mill" is a typical rotating shutter design in the instrument. It is usually deployed airborne and flown through anvil head clouds to make measurements.
The club is anticipating the refurbishment of FieldMill into a 10,000 all-seater stadium.
Though FieldMill in its heyday had crowd figures on occasion reaching close to 25,000 people, the ground today is clearly showing its age.
The move to a new stadium is seen as essential if the club is to survive into the next century, as the new, stringent laws governing football stadia mean that overhaul of the ground to meet new standards is beyond the means of the club.
Because the pointer into the field table was fixed at 24" during acceleration, it was clear that, while accelerating, the expected torque per-amp and the actual torque per-amp of the winder/unwinder did not agree.
This is the result of the combination of the diameter pointer into the field table producing the expected torque per-amp on the motor shaft, and the tension loop PI regulator compensating for the offset.
It is expected that the mill operation should be improved, and at the least the source of the problem is understood, and other corrective actions can be explored if needed.
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