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  • Sukhoi Su-11 (Fishpot-C) Interceptor Aircraft

    Improvements brought about to the Sukhoi Su-9 Fishpot series of Soviet interceptors gave rise to the Sukhoi Su-11 line.

     Updated: 4/7/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com

    When the more potent Uragan 5B ("Hurricane") series interception radar became available to Soviet warplanes, it was deemed beneficial to advance an existing design. The selection fell to the Sukhoi Su-9 "Fishpot" with its conventional design lines and overall effectiveness. The new radar fit, along with support for the new R-98 (AA-3 "Anab") medium range Air-to-Air Missile (AAM), produced the resurrected "Su-11" designation. The type would be taken into service to strengthen Soviet interception capabilities across the empire's vast frontier.

    The size of the Urugan radar fit dictated an increase in the cross-section of the Su-9 airframe so the fuselage was made larger and the nose-mounted intake revised to keep airflow consistent to the same turbojet engine within. Like the Su-9, the Su-11 was powered by a single Lyulka AL-7F afterburning turbojet engine which outputted 21,164lb of thrust. A revised fuel system was also included which meant that external pipes were added along the rear section of the fuselage so no internal changes would have to be made in serial production. Swept-back tail planes and delta-wing mainplanes were both retained from the original Su-9 and completed the rather sleek look to the fast aircraft. The sole pilot sat under a bubble-style canopy with generally good views around his aircraft.

    A first flight by way of the T-47 prototype was had on December 25th, 1958 and production spanned from 1962 until 1965 to which only 108 examples were completed due to developmental delays. As such introduction into Soviet Air Force service was not had until 1964. NATO designated the Su-11 as the "Fishpot-C" due to its origins in the original "Fishpot" entry.

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    Sukhoi Su-11 (Fishpot-C) Technical Specifications

    Service Year: 1964
    Type: Interceptor Aircraft
    National Origin: Soviet Union
    Manufacturer(s): Sukhoi OKB - Soviet Union
    Production Total: 108

    Structural (Crew Space, Dimensions and Weights)

    Operating Crew: 1
    Length: 60.01 feet (18.29 meters)
    Width: 27.66 feet (8.43 meters)
    Height: 16.01 feet (4.88 meters)

    Weight (Empty): 19,842 lb (9,000 kg)
    Weight (MTOW): 29,983 lb (13,600 kg)

    Installed Power and Standard Day Performance

    Engine(s): 1 x Lyulka AL-7F-1 afterburning turbojet engine developing 21,164 lb of thrust.

    Maximum Speed: 1,454 mph (2,340 kph; 1,263 knots)
    Maximum Range: 699 miles (1,125 km)
    Service Ceiling: 55,774 feet (17,000 meters; 10.56 miles)
    Rate-of-Climb: 27,000 feet-per-minute (8,230 m/min)

    Armament / Mission Payload

    4 x R-98 (AA-3 "Anab") medium-range Air-to-Air Missiles (AAMs).

    Global Operators / Customers

    Soviet Union

    Model Variants (Including Prototypes)

    T-47 - Prototype Model Designation

    Su-11 "Fishpot-C" - Base series designation

    Su-11-8M - Definitive production mark

    Su-11U "Maiden" - Conversion Trainer