The Sukhoi Su-9 (ASCC reporting name: Fishpot) is a single-engine, all-weather, missile-armed interceptor aircraft developed by the Soviet Union.

The Su-9 was developed at the same time as the Su-7 "Fitter", and the West first saw both at the Tushino Aviation Day on June 24, 1956, where the Su-9 was dubbed Fitter-B.

Due to the Su-9's lack of fuel, the pilot elected to break away from the U-2 and continue with the original flight plan.

On September 4, 1959 a modified Su-9 (designated T-431 by the bureau) piloted by Vladimir Sergeievitch Ilyushin set a new world record for absolute height, at 28,852 m (94,658 ft).

It shared Sukhoi features like the rear-fuselage air brakes as well as the Su-7's Lyulka AL-7 turbojet engine and nose intake.

The Su-9 had primitive R1L (NATO reporting name "High Fix") radar in the shock cone and was armed with four K-5 (AA-1 "Alkali") beam-riding air-to-air missiles.

[3] Unlike the Su-7 and later Su-15, Su-9 carried no cannon armament, although two fuselage pylons were reserved for the carriage of drop tanks.

It had a full armament and radar system with displays in both cockpits, allowing trainees to practice all aspects of the interception mission.

Data from OKB Sukhoi : a history of the design bureau and its aircraft [5]General characteristics Performance Armament