Development
In 1940, A.A. Volkov and S.A.Yartsev created an autocannon called TKB-201 for the new 23 mm round. It was intended to be the primary weapon of the Ilyushin Il-2 ground attack aircraft. The original intention was to create a gun capable of penetrating German tank armour.
Due to unavailability of Il-2, the first airborne testing was performed using a German Messerschmitt Bf 110 heavy fighter. After testing on Il-2 in 1941, TKB-201 was accepted into service as VYa-23. A total of 64,655 VYa-23 were built.
Read more about this topic: Volkov-Yartsev VYa-23
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