Shvetsov M-11
The Shvetsov M-11 is a five-cylinder air-cooled radial aircraft engine produced in the Soviet Union between 1923 and 1952.
Design and Development:
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 five-cylinder air-cooled radial piston engine with aluminum cylinder heads. Like the American Kinner B-5 5-cylinder radial of similar size, the M-11 had individual camshafts for each cylinder, operating the pushrods, rather than a single central cam ring. The initial versions of the M-11 suffered from a short service life of only 50 hours. The basic M-11 engine had a power output of 100 hp (73 kW), the newer M-11D variant was higher at 125 hp (92 kW). The ultimate version, M-11FR, introduced in 1946, increased power 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, etc.) and featured a floatless carburetor.
Variants
Applications:
General Characteristics (M-11A):
Components:
Performance:
- M-100: Designation of prototype and initial designs.
- M-11: Initial production version at 75 kW (100 hp), compression ratio 5:1
- M-11a: 75 kW (100 hp) / 82 kW (110 hp)
- M-11/A: 75 kW (100 hp) / 82 kW (110 hp)
- M-11B: 75 kW (100 hp) / 82 kW (110 hp)
- M-11D: 86 kW (115 hp) / 93 kW (125 hp)
- M-11E: Compression ratio 6:1 - 110 kW (150 hp) / 120 kW (160 hp)
- M-11F: 108 kW (145 hp) / 123 kW (165 hp)
- M-11FM: 108 kW (145 hp)
- M-11FR: Compression ratio 5.5:1 - 100 kW (140 hp) / 120 kW (160 hp)
- M-11FR-1: Compression ratio 5.5:1 - 100 kW (140 hp) / 120 kW (160 hp)
- M-11FN: 150 kW (200 hp)
- M-11G: 75 kW (100 hp) / 82 kW (110 hp)
- M-11I: Compression ratio 5.5:1 - 130 kW (170 hp) / 150 kW (200 hp)
- M-11K: 86 kW (115 hp) / 93 kW (125 hp)
- M-11L: 86 kW (115 hp) / 93 kW (125 hp)
- M-11M: 108 kW (145 hp)
- M-11V: 75 kW (100 hp) / 82 kW (110 hp)
- M-11Ya: A projected development of the M-11 at GAZ-41. The prototype was run but results were unsatisfactory, re-designated M-12
- M-11Ye: Developed by Okromechko 110 kW (150 hp)
Applications:
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General Characteristics (M-11A):
- Type: 5-cylinder air-cooled radial engine
- Bore: 125 mm (4.92 in)
- Stroke: 140 mm (5.51 in)
- Displacement: 8.6 L (525 cu in)
- Dry weight: 165 kg (363 lb)
Components:
- Cooling system: Air-cooled
Performance:
- Power output:
- 82 kW (110 hp) at 1,650 rpm for takeoff
- 75 kW (100 hp) cruise
- Specific power: 9.5 kW/L (0.21 hp/in³)
- Compression ratio: 5:1
- Power-to-weight ratio: 0.5 kW/kg (0.3 hp/lb)
Source(s):
Wikipedia
Gunston, Bill (2006). World Encyclopedia of Aero Engines: From the Pioneers to the Present Day (5th ed.). Stroud, UK: Sutton. ISBN 0-7509-4479-X.
Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1989. ISBN 0-517-67964-7
Wikipedia
Gunston, Bill (2006). World Encyclopedia of Aero Engines: From the Pioneers to the Present Day (5th ed.). Stroud, UK: Sutton. ISBN 0-7509-4479-X.
Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1989. ISBN 0-517-67964-7
