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Shvetsov M-11
The Shvetsov M-11 was designed under a 1923 competition in the Soviet Union for a new engine to power trainer aircraft. It is a single-row radial piston engine with aluminum cylinder heads. Uniquely, pushrods actuating the valves were driven by individual cams on each cylinder rather than a single central cam. The initial versions of the M-11 suffered from a short serice life of only 50 hours. The ultimate version, M-11FR, introduced in 1946, increased output to 160 hp at 1,900 rpm on takeoff and 140 hp at cruise and had provisions for a variable-pitch propeller, accessory drive (for vacuum pumps, compressors, generators, and so on) and featured a floatless carburetor. M-11 powered a number of aircraft, including Mikoyan-Gurevich MiG-8, Polikarpov Po-2, Yakovlev UT-1, Yakovlev UT-2, Yakovlev Yak-6, Yakovlev Yak-12 and Yakovlev Yak-18. It also powers the Polish PZL S-4 Kania and LWD Junak. M-11 remained in production until 1952 with an estimated total of over 100,000 engines made.
Specifications (M-11)
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| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Shvetsov M-11". |
