Sukhoi Su-15

Sukhoi Su-15. The Sukhoi Su-15, NATO reporting name "Flagon", was a twinjet supersonic interceptor aircraft developed by the Soviet Union during the Cold War. As the primary high-altitude interceptor for the Soviet Air Defence Forces (PVO Strany) from the late 1960s, it was a central component of the USSR's integrated air defense network. It was infamous for its involvement in several international incidents, most notably the downing of Korean Air Lines Flight 007 in 1983.

Development and design

The development of the aircraft was initiated by the Sukhoi Design Bureau to meet a demanding Soviet Air Force requirement for a high-performance successor to the Sukhoi Su-9 and Sukhoi Su-11. The design, led by chief designer Pavel Sukhoi, evolved from earlier delta-wing concepts, ultimately adopting a distinctive "tailless delta" configuration with a large radome housing a powerful RP-15 Oryol-D radar. Key innovations included the use of two Tumansky R-11 turbojet engines, later upgraded to more powerful Tumansky R-13 units, and an advanced weapon system integrating R-98 air-to-air missiles guided by the aircraft's fire-control radar. The prototype, designated T-58, first flew in 1962, with the design undergoing significant refinement to improve its avionics, engine performance, and aerodynamic stability before entering service with the PVO Strany.

Operational history

Entering operational service in 1965, the aircraft quickly became the backbone of the Soviet Air Defence Forces, tasked with defending the vast airspace of the USSR against potential intruders like the United States Air Force's B-52 Stratofortress and SR-71 Blackbird. Its operational history is marked by several high-profile engagements during the Cold War, including the interception and forced landing of a Turkish Air Force aircraft in the Black Sea region. The most notorious incident occurred on 1 September 1983, when a pilot from the Far Eastern Military District shot down Korean Air Lines Flight 007 near Sakhalin Island, believing it to be a United States Air Force RC-135 reconnaissance plane, triggering a major international crisis. It remained in widespread frontline service until the dissolution of the Soviet Union, with the last examples retired from the Russian Air Force in 1996.

Variants

Several major variants were produced, each reflecting incremental improvements in capability. The initial production model was the Su-15, followed by the upgraded Su-15T which featured an improved RP-26 Taifun radar. The definitive and most produced version was the Su-15TM, which incorporated a more powerful RP-26M Taifun-M radar, enhanced electronic countermeasures, and the ability to carry the improved R-98M missile. A dedicated trainer version, the Su-15UT, was a dual-control aircraft with a redesigned forward fuselage but lacking radar and combat capability. An experimental model, the Su-15bis, tested new Tumansky R-25 engines, but did not enter series production.

Operators

The primary and essentially sole operator was the Soviet Union, specifically the Soviet Air Defence Forces (PVO Strany). Following the dissolution of the Soviet Union in 1991, inherited aircraft were briefly operated by the successor states' air forces. These included the Ukrainian Air Force and the Russian Air Force, with the latter retiring its last examples. A small number were also reportedly transferred to the Georgian Air Force, but saw little to no operational use. No aircraft were exported to other Warsaw Pact nations or foreign clients outside the former USSR.

Specifications (Su-15TM)

* Crew: 1 * Length: 19.56 m (64 ft 2 in) * Wingspan: 9.34 m (30 ft 8 in) * Height: 4.84 m (15 ft 11 in) * Empty weight: 10,874 kg (23,973 lb) * Max takeoff weight: 17,794 kg (39,230 lb) * Powerplant: 2 × Tumansky R-13F2-300 afterburning turbojet engines * Maximum speed: 2,230 km/h (1,390 mph, 1,200 kn) at high altitude * Range: 1,380 km (860 mi, 750 nmi) * Service ceiling: 18,100 m (59,400 ft) * Armament: 2 × R-98 (AA-3 'Anab') air-to-air missiles (typically one infrared homing and one semi-active radar homing), plus optional external fuel tanks or unguided rocket pods.

Category:Interceptor aircraft Category:Cold War military aircraft of the Soviet Union Category:Sukhoi aircraft