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By 1933, the problems had been worked out and the Perseus went on to become the first sleeve valve aero-engine in the world, to be put into large quantity production. [ 2 ] The result was a Bristol Mercury -sized engine adapted to the sleeve valve system, the Perseus, and its smaller cousin, the Bristol Aquila .
The Bristol Hercules is a 14-cylinder two-row radial aircraft engine designed by Sir Roy Fedden and produced by the Bristol Engine Company starting in 1939. It was the most numerous of their single sleeve valve ( Burt-McCollum , or Argyll , type) designs, powering many aircraft in the mid- World War II timeframe.
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An unusual form of four-stroke model engine that uses what is essentially a sleeve-valve format, is the British RCV series of "SP" model engines, which use a rotating cylinder liner driven through a bevel gear at the cylinder liner's "bottom", which is actually at the aft end of the cylinder; and, even more unusually, have the propeller shaft ...
Known as the Bristol Orion, a name used previously for a variant of the Jupiter engine and later re-used for a turboprop, this development was also a two-row, 18 cylinder sleeve valve engine, with the displacement increased to 4,142 cu in (67,875.2 cm 3) [6.25 in × 7.5 in (159 mm × 191 mm)], nearly as large as the American Pratt & Whitney R ...
Both of the proposed aircraft were originally intended to be powered by the Bristol Perseus radial engine, capable of producing 850 hp (634 kW). [1] At a late stage, the Air Ministry decided to revise the specification and re-issue it as M.10/36; the principal change was that the aircraft was abruptly required to accommodate a crew of four ...
The Aquila was developed two years after the somewhat larger Perseus, both being sleeve valve designs. The primary difference was in size, the Perseus being based on the 5.75 by 6.5 in (146 by 165 mm) cylinder used in the Mercury engine, while the Aquila used a new and smaller 5 by 5.375 in (127.0 by 136.5 mm) sized cylinder.
The S.30 series was outfitted with four Bristol Perseus XIIc sleeve valve engines in the place of the Pegasus engines; the Perseus engines were more efficient but provided a lower power output of 890 horsepower (660 kW), but the decrease in developed thrust was effectively compensated for via the adoption of smaller diameter nacelles which had ...