Aviation engines; design--construction--operation and repair; (1919)
Pagé, Victor Wilfred, 1885-1947 · New York, The Norman W. Henley publishing co. · leaf 531
s and cylinders, as well as the valve ports, are 532 Aviation Engines entirely surrounded by water jackets. The valves setin the heads at an angle of 25° from the vertical, aremade of tungsten steel and are provided with doublesprings, the outer or main spring and the inner or aux-iliary spring,… … -7g*H
Airplanes
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