Abstract
Abstract The paper presents some novel ideas on wind-tunnel balance design. It describes a new electromagnetic balance, which determines the current required to produce a balancing force. The claims are made, as against the motor-driven balance, that it is less costly, that it has no moving parts in the beam, is practically instantaneous in its response to sudden changes in force, can be quickly adjusted to almost any desired degree of sensitivity, and is readily adapted to recording devices to do away with the point-by-point method of obtaining curves.
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