The Tumansky M-88 was an air-cooled radial engine for aircraft developed in the Soviet Union shortly before World War II. == 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 Tumansky M-88 was an air-cooled radial engine for aircraft developed in the Soviet Union shortly before World War II. == 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.
Source: Wikipedia "Tumansky M-88" · CC BY-SA 4.0
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