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The Tumansky M-88 was an air-cooled radial engine for aircraft developed in the Soviet Union shortly before World War II.

M-88
Type	Radial aero engine
National origin	Soviet Union
Manufacturer	Tumansky
First run	1939
Developed from	Tumansky M-87

Design and development

The M-88 was designed to address the shortcomings of the Tumansky M-87. The improvements incorporated in the M-88 were a strengthened crankcase, crankshaft, connecting rods, waffle ribbing at the piston bottom and a two speed geared centrifugal supercharger. The M-88 retained the same bore/stroke and displacement as the M-87 while increasing power to 1,000-1,150 hp. Design work began in 1937 and by 1939 the first prototypes were being flight tested in the Polikarpov I-180 fighter prototypes.[1] 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. There were a number of different variants with the most numerous being the M-88B, of which 10,585 were produced at Zaporozhye and Omsk. The M-88B solved most of the mechanical failures associated with the M-87 and early M-88's by including oil injectors in the crankshaft, improved cooling and strengthened drive components. 16,087 M-88's were produced. In hindsight, the Tumansky family of engines developed from the Gnome-Rhône 9K and Gnome-Rhône 14K were far less successful than the Shvetsov family of engines developed from the Wright R-1820.[1]

Applications

• Ilyushin Il-4
• Neman R-10
• Polikarpov I-180
• Sukhoi Su-2

Specifications (Tumansky M-88B)

General characteristics

• Type: 14-cylinder twin-row air-cooled radial engine
• Bore: 146 mm (5.75 in)
• Stroke: 165 mm (6.50 in)
• Displacement: 38.72 L (2,363 cu in)
• Dry weight: 684 kg (1,508 lb)

Components

• Supercharger: Two-speed, geared centrifugal
• Cooling system: air-cooled

Performance

• Power output: 1,100hp
• Compression ratio: 6.1:1

See also

Related development

• Tumansky M-87
• Gnome-Rhône Mistral Major

Comparable engines

• BMW 801
• Bristol Hercules
• Bristol Taurus
• Gnome-Rhône 14N
• Mitsubishi Kinsei
• Nakajima Sakae
• Piaggio P.XIX
• Shvetsov ASh-82

Related lists

• List of aircraft engines

References

На других языках

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- [en] Tumansky M-88

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[fr] Toumanski M-88

Le Toumanski M-88 est un moteur en étoile soviétique refroidi par air, développé peu avant la Seconde Guerre mondiale. Il a été conçu pour corriger les défauts du M-87. Les améliorations apportées au M-88 étaient un renforcement du carter, du vilebrequin, des bielles, l'ajout de nervures sur la partie basse des pistons et le remplacement du compresseur centrifuge de suralimentation par un compresseur centrifuge à deux vitesses. Le M-88 a conservé les mêmes alésages et courses que le M-87, tout en développant une puissance de 1 150 ch au lieu de 1 000 pour le M-87. La conception de ce moteur commença en 1937 et, en 1939, les premiers prototypes ont été testés en vol sur le prototype du chasseur Polikarpov I-180 (en).

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[it] Tumanskij M-88

Il Tumanskij M-88, citato semplicemente anche come M-88 e nella bibliografia di settore in lingua inglese Tumansky M-88, fu un motore aeronautico radiale 14 cilindri a doppia stella raffreddato ad aria sviluppato in Unione Sovietica al TsIAM (o CIAM), l'istituto centrale per i motori aeronautici, dall'ingegnere Sergej Konstantinovič Tumanskij nei tardi anni trenta.

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[ru] М-88

М-88 — советский авиационный поршневой двигатель. Представлял собой дальнейшее развитие М-87, в свою очередь являвшегося доработкой M-86, советской версии Гном-Рон 14K Mistral Major.

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