Ilyushin Il-10

Il-10
Ilyushin Il-10M in Soviet Air Force markings preserved at the Monino museum near Moscow
Role	Ground attack aircraft
Manufacturer	Ilyushin, Avia
First flight	18 April 1944
Introduction	1944
Retired	1962 (Czechoslovakia)
Primary users	Soviet Air Force Czechoslovak Air Force Polish Air Force
Produced	1944–1954
Number built	6,166 (4,966 Il-10 + 1,200 B-33)
Developed from	Ilyushin Il-2

The Ilyushin Il-10 (Cyrillic Илью́шин Ил-10, NATO reporting name: "Beast") was a Soviet ground attack aircraft developed at the end of World War II by the Ilyushin construction bureau. It was also license-built in Czechoslovakia by Avia as the Avia B-33.

From the start of Eastern Front combat in World War II, the Soviet Air Force (VVS) used the successful ground attack aircraft Ilyushin Il-2 Sturmovik, powered by the Mikulin AM-38 inline engine. As the war progressed, the Soviets laid plans for that aircraft's successor. The main goal was to increase speed and maneuverability at low altitudes, mainly to evade small-caliber anti-aircraft artillery, which was the main threat for ground attack aircraft, and to remove some of the Il-2's faults. The most promising project was a modern, light and maneuverable close assault aircraft, the Sukhoi Su-6, developed by Pavel Sukhoi's bureau from 1942. At the same time, Sergei Ilyushin developed a heavier aircraft, the BSh M-71, (Il-8 M-71), derived from the Il-2 design, on which it was partly based, to be powered by the prototype Tumansky M-71 radial engine, which did not enter production.

In 1943, Ilyushin started work on a new aircraft, Il-1, which was to be a 1- or 2-seat heavily armoured fighter-interceptor, meant mainly for fighting enemy bombers and transports. The Il-1 was similar to the Il-2 design, but was more modern, compact, and powered with a new Mikulin engine: the AM-42. But the VVS gave up the idea of heavy armoured fighters, due to their low speed, which was not enough to intercept modern bombers. As a result, Ilyushin decided to turn the Il-1 into a two-seat ground attack plane, with the designation changed to Il-10 in early 1944 (odd numbers were reserved for fighters).

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