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Sukhoi Su-15

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Sukhoi Su-15 is a Soviet Union-built interceptor aircraft designed by Pavel Sukhoi and his team at the Sukhoi Design Bureau. The Su-15 was developed to counter the threat posed by United States Air Force strategic bombers such as the Boeing B-52 Stratofortress and Convair B-58 Hustler, as well as CIA-operated Lockheed U-2 reconnaissance aircraft. The Su-15 first flew in 1962 and entered service with the Soviet Air Defence Forces in 1965, playing a key role in the defense of Soviet airspace alongside other interceptors like the Tupolev Tu-128 and Mikoyan-Gurevich MiG-25. The Su-15 was also used by other Warsaw Pact countries, including Poland and Czechoslovakia.

● Development

The development of the Su-15 began in the late 1950s, with the Sukhoi Design Bureau tasked with creating an interceptor capable of countering the latest Western bomber aircraft, such as the Boeing B-47 Stratojet and Boeing B-52 Stratofortress. The design team, led by Pavel Sukhoi, drew on experience gained from the development of earlier Sukhoi interceptors, including the Sukhoi Su-9 and Sukhoi Su-11. The Su-15 was designed to be highly maneuverable and have a strong radar and missile capability, with the ability to engage targets at high altitude and speed. The Su-15 was powered by two Tumansky R-11 turbojet engines, which provided a significant increase in power and thrust over earlier Sukhoi designs. The Su-15 also featured a nose-mounted radar antenna, which was used to guide the aircraft's missiles and provide targeting information to the pilot.

● Design

The Su-15 has a distinctive delta wing design, with a swept wing and a vertical stabilizer located at the rear of the aircraft. The aircraft is constructed primarily of aluminum alloy, with some steel and titanium components used in high-stress areas. The Su-15 has a length of 19.56 meters and a wingspan of 9.43 meters, with a height of 4.84 meters. The aircraft has a maximum takeoff weight of 17,900 kilograms and is powered by two Tumansky R-11 turbojet engines, each producing 13,000 pounds of thrust. The Su-15 is equipped with a RP-15 pulse-doppler radar system, which provides target detection and tracking capabilities, as well as a GSh-23 autocannon for use against enemy aircraft. The Su-15 can also carry a range of air-to-air missiles, including the R-8 and R-98.

● Operational History

The Su-15 entered service with the Soviet Air Defence Forces in 1965 and quickly became a key component of the Soviet Union's air defense system, alongside other interceptors like the Tupolev Tu-128 and Mikoyan-Gurevich MiG-25. The Su-15 was used to intercept a range of Western aircraft, including Lockheed SR-71 Blackbird reconnaissance planes and Boeing RC-135 signals intelligence aircraft. The Su-15 was also used by other Warsaw Pact countries, including Poland and Czechoslovakia, and saw service in a range of conflicts, including the Soviet-Afghan War. The Su-15 remained in service with the Russian Air Force until the late 1990s, when it was replaced by more modern interceptors like the Mikoyan-Gurevich MiG-31.

● Variants

Several variants of the Su-15 were developed, including the Su-15UT trainer aircraft and the Su-15TM upgraded interceptor. The Su-15UT was used to train pilots in the operation of the Su-15, while the Su-15TM featured a range of upgrades, including improved radar and avionics systems. Other variants of the Su-15 included the Su-15UM experimental aircraft, which was used to test new technologies and systems, and the Su-15Sh ground attack aircraft, which was used to provide close air support to ground forces. The Su-15 was also used as a testbed for the development of new missiles and radar systems, including the R-40 and R-60 air-to-air missiles.

● Specifications

The Su-15 has a length of 19.56 meters and a wingspan of 9.43 meters, with a height of 4.84 meters. The aircraft has a maximum takeoff weight of 17,900 kilograms and is powered by two Tumansky R-11 turbojet engines, each producing 13,000 pounds of thrust. The Su-15 has a maximum speed of 2,230 kilometers per hour and a service ceiling of 18,000 meters. The aircraft is equipped with a RP-15 pulse-doppler radar system and can carry a range of air-to-air missiles, including the R-8 and R-98. The Su-15 also features a GSh-23 autocannon for use against enemy aircraft.

● Operators

The Su-15 was operated by a range of countries, including the Soviet Union, Poland, and Czechoslovakia. The Su-15 was also used by other Warsaw Pact countries, including East Germany and Hungary. The Su-15 remained in service with the Russian Air Force until the late 1990s, when it was replaced by more modern interceptors like the Mikoyan-Gurevich MiG-31. The Su-15 was also used by the Ukrainian Air Force and the Belarusian Air Force after the dissolution of the Soviet Union. Today, the Su-15 is largely retired from service, although some examples remain in use as museum pieces or gate guardians at air bases and museums around the world, including the Central Air Force Museum in Monino, Russia and the Polish Aviation Museum in Krakow, Poland.

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