Manufacturing the Alvis Leonides: An Account by the Technical Editor of the Methods Adopted for the Making of Britain's only 500 h.p. Aero‐Engine

AN article on the production of an acro‐engine is far more difficult to write than one about an airframe, for the majority of the operations take place in the machine shop, leaving one with two alternatives—a brief, uninformative outline, or a laboriously detailed, dull account. The form of the present article is an attempt to give both an interesting and informative, although of necessity incomplete, account of the production of the Alvis Leonides. Since Alvis Ltd. are, comparatively speaking, newcomers to the aircraft industry, the extent and facilities of their works are not generally known, so these are dealt with at some length, while the actual machining operations are covered by a selection of photographs, accompanied by explanatory captions, of some of the most interesting parts and operations.