METHODS OF CONTROLLING THE ROLL DEGREE OF FREEDOM IN A WIND TUNNEL MAGNETIC BALANCE PART I: PRODUCTION OF ROLLING MOMENTS

摘要

This report presents a discussion of methods of pro¬ducing rolling moments by magnetic fields on a model sus¬pended in a magnetic wind tunnel balance system. Two methods are described and compared: one involving the interac¬tion of steady nonuniform fields with a nonuniformly magnet¬ized body, and the other involving the interaction of an alter¬nating uniform magnetic field with a closed loop of conducting material. The two alternative methods are translated into magnetic configurations designed to satisfy the objective of a completely integrated six degree of freedom balance system.