Pulse Capacitors for Neex Generation Linear Colliders

Not Available The US Air Force has initiated a More Electric Aircraft (MEA) program to demonstrate electrically-driven power subsystems to replace hydraulic, pneumatic, and mechanical components. Essential to the MEA is an Integrated Power Unit (IPU). The IPU involves a rotor on magnetic bearings and a switched reluctance motor/generator requiring a high strength soft magnetic material capable of sustained use at 550 - 600 degrees C and 60,000 rpm rotation speed that creates stresses up to 90 ksi. The material must sustain this for 5,000 hours with less than 1% creep. Also, the hard magnets in the bearings must maintain magnetic properties at these elevated temperatures. Evaluations of soft magnetic materials indicate that though the magnetic properties are acceptable, the best materials suffer excessive creep. The need is for improved soft magnets capable of these conditions and ideally having maximal permeability with minimal core losses. For magnetic bearings, the need is for improvements in the magnetic properties of hard magnets at 500 degrees C. The proposal approaches the problem by using an inexpensive new method to constructing the desired materials chemically. The plan is to create microstructures with entirely new properties not possible with current magnetic engineering techniques.