Kirill Ivanovich Shchelkin

Kirill Ivanovich Shchelkin (17 May 1911 – 8 November 1968) was a Russian scientist involved in the development of Soviet nuclear weapons, particularly the physics of combustion and explosion. He graduated in 1932 from the Crimean Institute in Simferopol and became the department head at Arzamas-16 responsible for the development of shaped explosive charges used in nuclear implosion type weapons. He served as first scientific director at Chelyabinsk-70 from 1955–1960.

Awards and honors
Shchelkin was a Hero of Socialist Labor a total of three times (1949, 1953, and 1956).

Legacy
His name was given to the Shchelkin spiral, a device in a combustion chamber used to facilitate the deflagration to detonation transition.