Development EditThe Yak-17 was the successor to the Yak-15, which was designed parallel to the Mikoyan MiG-9.
The optical difference to the Yak-15 is the undercarriage of the Yak-17, because the main gear had to be redesigned to place it behind the aircraft´s center of gravity. The cockpit of the aircraft was enlarged, as well as the vertical stabilizer and the intakes.
The first prototype, called Yak-154 (also known as Yak-15U) had its first flight in the year 1947. Production started in the same year and till 1948, 430 aircraft were built.
The Yak-17 was designed to be an interim solution, and was operational for only a short time. But the Yak-17 was exported into Poland and Czechoslovakia, where it should be license built, but however this never happened because of the more successful MiG-15.
The Yak-17UTI was a tandem seat, dual control trainer variant, which had its first flight in May 1947. This variant was mainly used in China. The NATO codename of this variant was "Type 26", later "Magnet". The following Yak-aircraft were the Yak-19 and the Yak-23.
The last Yak-17UTI was retired from service in 1961. It was used for testing in Poland.