THE SHEET METAL PROCESS

JUST over a year ago (in the October and November 1942 issues of AIRCRAFT ENGINEERING) we published an Institute of the Aeronautical Sciences paper by Mr. F. R. SHANLEY of the Lockheed Aircraft Corporation on “ Elastic Theory in Sheet‐Forming Problems”. In this issue we follow this by a Society of Automotive Engineers paper by MESSRS. SCHROEDER AND HAZLETT, also of the Lockheed Company, on “Sheet Metal Forming and Assembling”. The one paper therefore forms the complement of the other and the two together provide as nearly as possible a complete guide to the latest practice in the design, tooling and utilization of this process—or rather these processes, for there are a number of methods in operation.