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    Sukhoi Su-25 - Wikipedia

    • The Sukhoi Su-25 Grach (Russian: Грач (rook); NATO reporting name: Frogfoot) is a subsonic, single-seat, twin-engine jet aircraft developed in the Soviet Union by Sukhoi. It was designed to provide close air support for Soviet Ground Forces. The first prototype made its maiden flight on 22 February 1975. After testing, the aircraft went into series production in 1978 in Tbilisi in … 展开

    Development

    In early 1968, the Soviet Ministry of Defence decided to develop a specialised shturmovik armoured assault aircraft in order to provide close air support for the Soviet Ground Forces. The idea of creating a ground-support aircraft c… 展开

    Design

    The Su-25 has a conventional aerodynamic layout with a shoulder-mounted trapezoidal wing and a traditional tailplane and rudder. Several metals are used in the construction of the airframe: 60% aluminium, 19% steel, 13.5% … 展开

    Operational history

    The first Soviet Air Force Su-25 unit was the 80th Assault Aviation Regiment, formed in February 1981 based at Sitalcay air base in the Azerbaijan Soviet Socialist Republic. The first eleven aircraft arrived at Sitalchay in May 1981. Th… 展开

    When did the Air Force start testing aircraft?
    Although Army Air Forces (AAF) pilots flew the aircraft from time to time, and flight test engineers from Wright Field reviewed the data, the formal preliminary military test and evaluation program did not commence until the Fall of 1943, a year after the first flight.
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