Nelumbo

The Shvetsov ASh-2 was a 28-cylinder, air-cooled, radial aircraft engine designed in the Soviet Union in the late 1940s. It was inferior to the Dobrynin VD-4K engine and did not enter production. One of the problems was air-cooling which ate up to 50% of the total engine power at 15000 meters. In contrast, the liquid-cooled VD-4K required only 5% of power for cooling at the same altitude.

Data from Kotelnikov, p. 252

• Type: 28-cylinder, 4-row radial engine
• Bore: 155.5 mm (6.122 in)
• Stroke: 155.0 mm (6.102 in)
• Displacement: 82.4 L (5,028 cu in)
• Dry weight: 1,850 kg (4,078 lbs)

• Supercharger: single-stage, single-speed geared supercharger
• Cooling system: Air-cooled

• Power output: 3,500 horsepower (2,600 kW)

Comparable engines

• Pratt & Whitney R-4360 Wasp Major

Related lists

• List of aircraft engines