At January 17, 1970 was the maiden flight of the Su-24 frontline bomber. In 1961, the Design Bureau of P.O. Sukhoi started work on a new all weather airplane to be used for attacking ground targets. It was intended to be a replacement for the Su-7B fighter-bombers. After several years of development, a prototype T6-2I was built which become the prototype of the Su-24 frontline bomber.
The Su-24 is a two-seat high-plane with variable sweep wings (from 16? to 69?). The Su-24M variant was powered by two ? AL-21F-Z engines with 110 kN thrust on afterburner. Maximal speed - 1700 km/h, combat radius 560 km. Armament: 23-mm gun + up to 7000 kg of rockets / bombs on 8 external pylons points.
The new bomber entered service in the USSR Air Force in February 1975. The total number of built Su-24s of all versions was about 1400. It was exported to Iraq, Syria, Libya, Algeria, etc. Today it remains in service with the Air Force of a number of post-Soviet and African countries.