The Yakovlev Yak-15 was a Soviet jet fighter developed in the late 1940s. It was one of the first operational jet fighters in the Soviet Union, featuring a simple design with a straight wing and a powerful KRD-500 turbojet engine. The Yak-15 was primarily used for air defense and training purposes. First flown in 1947, the Yak-15 entered service in 1949 and played a crucial role in the early years of jet aviation. It was known for its agility and ease of handling, making it suitable for pilots transitioning from propeller-driven aircraft. The Yak-15 was eventually succeeded by more advanced models, but it laid the groundwork for future Soviet jet fighters.