Mig-15 and Yak-23 fighter jets Krumovo Bulgaria

The Mikoyan-Gurevich MiG-15 (Russian: Микоян и Гуревич МиГ-15) was a jet fighter developed for the USSR by Artem Mikoyan and Mikhail Gurevich. The MiG-15 was one of the first successful swept-wing jet fighters, and it achieved fame in the skies over Korea, where early in the war, it outclassed all enemy fighters. The MiG-15 also served as the starting point for development of the more advanced MiG-17 which would oppose American fighters over Vietnam in the 1960s. The MiG-15 is believed to have been one of the most numerous jet aircraft ever made, with over 12000 built. Licensed foreign production perhaps raised the total to over 18000.[1] The Mig-15 is often mentioned along with the F-86 Sabre in lists of the best fighter aircraft of the Korean War and in comparison with fighters of other eras.[2] The Yak-23 was developed as a simple lightweight jet fighter, on Yakovlev's own initiative. It was a development of the earlier Yak-15 and Yak-17 fighters, retaining their non-conventional layout with a jet engine in the fuselage nose and exhaust under the cockpit, but the construction was all new. Its wings were derived from the Yak-19. The Yak-23 used a Soviet copy of the British Rolls-Royce Derwent V turbojet engine, produced as the Klimov RD-500. It first flew on July 8, 1947. After successful flights, it underwent state trials in 1948 and was accepted for series production. It was evaluated as highly maneuverable, with a good acceleration and take-off and climb capabilities ...



http://www.youtube.com/watch?v=3iQrQQYnyxk&hl=en