rototype of the MiG-17. Development started in
1949, parallel to the MiG-15bis.
The SI was intended to have better transsonic behavior due to redesigned fuselage (of the MiG-15) and entirely new wing
(450 inboard and 420 outboard sweep). The engine (VK-1)
and armament were same as of MiG-15/SD.
The first prototype, flown January 13, 1950, attained M=1.03, but crushed in March
1950.
The series production started in June 1951, entered service as a clear weather MiG-17.
