Science: Hybrid Turbine

A novel but not new kind of engine is figuring more and more often in engineering literature and bull sessions. Last week the Cleveland Diesel Engine Division of General Motors Corp. gave details about the large (6,000 h.p.) free piston engine that it has built to repower the Liberty Ship William Patterson. Smaller free piston engines are under development by General Motors for passenger cars and trucks. The Ford Motor Co. is deep in free pistons, and is trying them out for autos and farm tractors.

Just Like Steam. The charm of the free...

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