G. M. Props

More than nominally interested in aviation is the biggest U. S. motormaker: General Motors Corp. Holder of 30% of the outstanding stock of North American Aviation, Inc. (military planes) and 19% of Bendix Aviation Corp. (aircraft accessories), it is also sole proprietor of the big Allison plant, where G. M. engineers are working with might & main to get the U. S. Air Corps's only liquid-cooled aircraft engine into mass production.

Last week General Motors branched out into still another aviation field: propellers, now dominated by United Aircraft Corp. and Curtiss-Wright. Announced by G. M.'s Board Chairman Alfred Pritchard Sloan Jr. was the purchase of Engineering Projects, Inc., of Dayton, Ohio. Best guess as to the price: something less than $500,000, plus royalties. Named to head G. M.'s new Aeroproducts Division was Engineering Projects' president, 40-year-old Werner J. Blanchard. He has designed a constant-speed propeller with hollow hub for light cannon, now has under Army test a prop of new design with eight blades, four turning in each direction. If business warrants, G. M.'s research laboratory in Dayton will be expanded into a $5,000,000 factory.

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