From a comment to the blog from Steiner:
"The Mig-9, not the -15, was a copy of the Ta-183. The Mig-9 never showed up in combat against the West, so it has been forgotten. Both the -9 and the Yak-15, the other early Soviet effort at a jet air frame, used reverse engineered jet engines from BMW and Junkers respectively."
As usual, Steiner is correct!!
"The Mikoyan-Gurevich MiG-9 . . . NATO reporting name: Fargo was the first turbojet fighter developed by Mikoyan-Gurevich in the years immediately after World War II. It used reverse-engineered German BMW 003 engines. Categorized as a first generation jet fighter, it was moderately successful, but suffered from persistent problems with engine flameouts when firing its guns at high altitudes due to gun gas ingestion. A number of different armament configurations were tested, but nothing solved the problem."
* "1 × 37 mm Nudelman N-37 cannon"
* "2 × 23 mm Nudelman-Suranov NS-23 cannon"
"The Yakovlev Yak-15 . . . NATO reporting name: Feather . . . was a first-generation Soviet turbojet fighter developed by the Yakovlev design bureau (OKB) immediately after World War II. It used a reverse-engineered German Junkers Jumo 004 engine"
Feather less well armed than the MiG-15;
* "Guns: 2× 23 mm Nudelman-Suranov NS-23 cannon with 60 rounds each"
In both cases warplanes using reversed engineered German jet engines. Also wings not swept. A First Generation jet fighter what it is called. MiG-15 a Second Generation fighter with the swept wing design.