The Sukhoi Su-25 (NATO name: Frogfoot) is a single-seat, twin-engine ,armoured assault aircraft ,developed in the Soviet Union by the Sukhoi Design Bureau. It was designed to provide battlefield close support.Su-25 began as the T-8 Project，the first prototype made its maiden flight on 22 February 1975, The basic version of the aircraft was produced at Tbilisi Georgia. were delivered to the 200th OShAE at Sital Chai in Azerbaijan during April 1981.Between 1978 and 1989, 582 single-seat Su-25s were produced, their served in soviet union, and export Su-25K operators are Iraq，Angola, Bulgaria, Czech Republic, North Korea, Peru and Slovakia. Combat operations in the Soviet war in Afghanistan, Iran–Iraq War ,Gulf War. And Su-25 proved extraordinarily successful in,Afghanistan War，generated a Russian nickname for the aircraft: 'Grach'