Yakovlev Yak-15
The Yakovlev Yak-15 (Russian: Яковлев Як-15; NATO reporting name: Feather, USAF/DOD designation Type 2) is a first-generation Soviet turbojet fighter developed by the Yakovlev design bureau (OKB) immediately after World War II. The main fuselage was that of Yakovlev Yak-3 piston-engine fighter modified to mount a reverse-engineered German Junkers Jumo 004 engine. The Yak-15 and the Swedish Saab 21R were the only two jets to be successfully converted from piston-power to enter production.