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Tumansky M-87
The Tumansky M-87 was a Soviet air-cooled aircraft radial engine.
Development
In 1934, USSR licensed the French Gnome-Rhône 14K aircraft engine producing 800 hp (595 kW), which entered production as the M-85.[1] The engine was subsequently modified to M-86 which produced 960 hp (715 kW) at takeoff thanks to increased supercharging and a higher compression ratio.[1] The M-87 was created to further increase the power output. Cylinders and pistons were revised to further increase the compression ratio and the supercharger was redesigned. The resulting engine had better high-altitude performance and entered production in 1938. However, the engine proved unreliable and suffered from failure of gears in the reduction gearbox.[1] Later the M-88 was designed to address the shortcomings of the M-87. At first the M-88 was not a success, but the designers persisted and the M-88 was made into a reliable and widely produced engine. The M-87 was used in Ilyushin Il-4 and Sukhoi Su-2 bombers, and the Polikarpov I-180 fighter.
The Tumansky family of engines developed from Gnome-Rhône 9K and Gnome-Rhône 14K proved far less successful than the Shvetsov family of engines developed from the Wright R-1820.
Specifications (M-87)
References
- ↑ 1.0 1.1 1.2 DB-3. Airpages.ru. Retrieved on 2007-01-08.
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fr:Toumansky M-87 ja:ツマンスキー M-87 ru:М-87 (двигатель)
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tumansky M-87". |
