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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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Created Date: 8/30/2012 4:52:52 PM
The Continental Motors Company, around the years of the Great Depression, developed prototypes of single sleeve-valve engines for a range of applications, from cars to trains to airplanes, and thought that production would be easier, and costs would be lower, than its counterpart poppet valve engines. Due to the financial problems of ...
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 ...
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 ...
Fedden and Butler immediately turned to such a design, adapting the Mercury to become the Bristol Aquila, and the Pegasus as the Bristol Perseus. However, both of these engines quickly found themselves at the "low end" of the power spectrum as ever-larger aircraft designs demanded ever-larger engines to power them.