WE publish this month an interesting article by MR. T. H. DAY ingeniously drawing attention to a striking analogy between the system of forces acting on an airscrew and on a direct‐acting engine. The diagrams he has prepared certainly produce strong evidence in proof of this similarity; to which, so far as we are aware, attention has not previously been called. There are, of course, comparable cases, such as those between certain electrical phenomena and mechanical forces, and there are no doubt others. It strikes us as being an interesting exercise to try and discover some of these; which might have beneficial effects in leading, in some instances, to simplification.
MCB UP Ltd
Copyright © 1943, MCB UP Limited