Description: Technical manual TM 1-405 from the United States War Department about aircraft engines. Prepared under direction of the Chief of the Air Corps. The booklet is divided into six sections: I. Internal-combustion engine principles, II. Classification and description of engine types, III. Description and construction of engine units, IV. Repair principles, V. Engine lubrication, and VI. Engine cooling. All chapters include information and drawings for reference.
Date: December 9, 1941
Creator: United States Department of War
Partner: National WASP WWII Museum