The М-62 (ASh-62) is a piston-type nine-cylinder single-row radial engine developed in the Experimental Design Bureau named after A.D. Shvetsov in 1938 for transport and civil aviation.

Till now, it is service. It powers the An-2. It has been produced for more than 50 years (serial production). It is the modification of the M-25 (initially designated M-62IR, from 1944 – Ash-62IR).

Later on, cylinder-piston engine group was used in the double-row engines ASh-73 for the aircrafts Tu-4 and Be-6. A group of mass production aircrafts, i.e. Lа-5, Lа-7, Tu-2, Il-12, Il-14, is powered with the advanced double-row Ash-82 engine (reduced piston-stroke, higher aerodynamic parameters).  

Capacity, l 29.87

Compression Ratio 6.4

Motor Weight, kg 520

Power (takeoff), hp 1000

Rotation (takeoff), rpm 2200

Ground Power, hp 830

Altitude Power, hp 800

Engine Specific Weight, kg 0.626

Power-to-Volume Ratio, hp/l 79

• The developers used in the design dual damper crankshaft, flexible gear of gas distribution, main rod side seal. It was put into serial production in 1937 at the Perm Plant № 19, later on – at the Voronezh Mechanical Plant.
• Preliminary, the М-62 (designated ASh-62 from 1944) was designed for the fighters I-16, and in 1938 the developers came up with the modification for the aircraft Li-2 — ASh-62IR. It has been produced for more than half a century and still powers aircrafts An-2.

An-2 from 1947, PS-84, li-2 from 1939.