Flutter and Allied Matters: An Important Series of Explanatory Diagrams Based on Recent History

IN introducing him to his audience when he read to the members of the Royal Aeronautical Society his lecture on control‐surface and wing stability problems, reproduced in this issue, the President of the Society, MR. H. E. Wimperis, said that MR. PUGSLEY was not so well known to the members as he ought to be. In this respect then, regular readers of AIRCRAFT ENGINEERING may be said to be the more fortunate, for it is now five years since we introduced him to them by publishing, in September, 1932, an article written by him on “ Torsional Instability of Struts.” Since then his name has become familiar to those who study the Aeronautical Research Committee's Reports and Memoranda, all of which are abstracted in AIRCRAFT ENGINEERING, to which series he has made a number of contributions.