| This study is concerned with the AAF experience with respect to airplane spark plugs and the measures taken to develop satisfactory plugs, particularly for use in the Packard V-1650, a license-built Rolls-Royce Merlin engine. The necessity of American-made spark plugs suitable for Packard-built engines prompted development of plugs in the United States with design features identical to British plugs. From results of full-scale endurance tests made by the Packard Motor Car Company, Detroit, Michigan, in summer 1941, Materiel Division, Wright Field (WF) stated that every effort should made to develop American plugs suitable for the V-1650 engine before resorting to the British plugs, which were more expensive and of shorter life. This report was released during July 1945. This report was released during July 1945. |
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