Su27S

The Su-27S is a single-seat air superiority fighter developed by the Soviet-era Sukhoi design bureau as part of the Su-27 family. It was designed to counter contemporary Western fighters and provide long-range air defense. The designation S identifies the single-seat production variant. The aircraft entered service with the Soviet Air Forces and later with the Russian Air Force, and it has been widely exported to a number of other countries.

Design and capabilities are centered on strong maneuverability, robust performance, and the ability to engage air targets at medium to long range. The Su-27S is powered by two turbofan engines, has a large airframe optimized for high thrust and endurance, and carries a versatile air-to-air weapons load. It employs a comprehensive avionics suite suitable for its era and an integrated flight-control system that enhances handling and situational awareness. A primary component of its combat capability is the ability to employ both short- and long-range air-to-air missiles, along with a 30 mm onboard cannon.

Variants and modernization: The Su-27S has been complemented by a two-seat trainer variant (Su-27UB) and several modernization programs that produced upgraded forms such as Su-27SM and Su-27SM3. Export versions exist under designations such as Su-27SK, reflecting adaptations for foreign customers. Ongoing updates have extended range, avionics, and sensor capabilities across operators.

Operational history: The Su-27S has been produced in large numbers and has served in multiple air forces since the late 1980s. It has been used for air defense, air superiority, and related missions, and many air forces continue to operate upgraded examples alongside newer fighters.

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