OCR Text |
Show he Incorporated into the power plant of a passenger car. The two are not parallel. par-allel. Ttie aircraft engine wns operated practically continuously at full power for thort periods and frequently torn down. Durability and quietness, so essential in a motor car, were negligible factors." i IES1IS 111 1111F IS2II Some Aircraft Engine Features Fea-tures in Forthcoming Car, Say Experts. TVhen enough of the new models for the new year are announced to design the composite com-posite motor car for 1920. a study of the engine and chassis specifications will disclose dis-close the embodiment of many wartime engineering en-gineering principles in the post armistice automobile. The various airplane engines, such as the Liberty motor, the Rolls-Royce, Renault Re-nault and Sunbeam engines, have had an inspirational influence on the American Ameri-can automobile engineer, according to D. McCall "White, a member of the supervisory super-visory committee of three engineers prominent in the designing and develop- . rnent of the twelve-cylinder engine that ! powered Vncle f-nm's airplanes. "The automobile industry has profited greatly from the lessons learned in wartime," war-time," said Mr. "White, who, with E. C. Howard, Is preparing to manufacture a new passenger car in Indianapolis. "The cars of 1920 will show the benefits of that experience, for adaptations of aircraft engine en-gine principles already have been made by many of the leading automobile com panies. These principles are not new to engineers. Lightweight Building. "The war taught us, for example, the absolute practicability of lightweight construction con-struction and the logic of machining parts to close limits. As a result we shall have many hollow engine parts of greater diameter than the solid parts previously used, giving them greater strength and durability with less weight. "In the development of the airplane engines difficulties previously encountered encoun-tered in the machining of allnv steels were overcome and great achievements were made in heat treatments through the attainment of closer limits in furnace temperatures, thus Increasing the durability dura-bility and resistance to fatigue. "A notable achievement was tho solution solu-tion of the baffling problem of welding a thin sheet of metal to a thicker one without burning the thinner, the thin steel water jacket of the airplane motor being welded to the steel cylinder. Dreams Made True. "War reduced many of the so-called dreams of engineers to commercial practicability. prac-ticability. Necessity made the manufacturers manufac-turers do many things hitherto considered consid-ered impossible. For example, they learned through necessity that certain parts could be machined on a production basis which they once thought had to be done by hand. Some of these lessons were radical and manufacturers were not always willing pupils, but the automobile manufacturer gradually learned to view , his engineers with greater r.-spect, aid the result was a real step forward from which the public will derive the benefit. "Ordinarily an established company lias many advantages over a new one. L'nder postwar conditions, however, the new plant with tools and equipment based on these recent developments has a unique advantage, provided, of course, that it is dominated by the necessary ability and experience. "There are several features of the Liberty Lib-erty engine and other aircraft engines, such as the steel cylinder, that cannot |