Requirements for Large Light-Metal Forgings and Extrusions in the Aircraft Industry

This paper discusses the aircraft-industry requirements for large forgings and extrusions and supports these requirements by analyzing the effect of the trend in performance on aircraft structure, function, and production. The paper confirms that large integral structural components satisfy these trends better than a continuation of conventional “bits and pieces” structure. It further concludes that large forgings and extrusions are the most economical methods to produce an integral-type structure. In addition, detail requirements of large forgings and extrusions relative to physical properties, tolerances, and refinements are presented. Statistical studies are given to indicate the high potential use of large forgings and extrusions.