Aviation engines; design--construction--operation and repair; (1919)
Pagé, Victor Wilfred, 1885-1947 · New York, The Norman W. Henley publishing co. · leaf 563
th fair accuracy the height abovethe ground at which a plane is flying. These instrumentsare furnished to enable the aviator to navigate the air-plane when in the air, and if the machine is to be usedfor cross-country flying, they may be supplemented by acompass and a drift set. It will be evident… … Compressed Air-Starting Systems 565 eter or revolution counter which is driven from theengine by a flexible shaft. This indicates directly thenumber of revolutions the engine is making per minuteand, of course, any slowing up of the engine in normalflights indicates that something is not…
Airplanes
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