Sukhoi Su-9 (1946)

The 1946 Sukhoi Su-9, also called Aircraft K, was an early Soviet jet fighter built shortly after the Second World War. The Sukhoi design bureau began the twin-engined design in 1944, and it was probably influenced by a captured Messerschmitt Me 262 without being a copy. Because the Lyulka TR-1 engines it was meant to use were not ready, it was redesigned around the RD-10, a Soviet copy of the Junkers Jumo 004B. It had an all-metal monocoque fuselage, a low straight wing, an ejection seat, a tricycle undercarriage and an armament of one 37 mm and two 23 mm cannon, and it was the first Soviet aircraft with hydraulic-powered controls. It flew on 13 November, and testing showed 885 km/h at 8,000 metres. It was slower than the MiG-9 and Yak-15, so the government declined to produce it. The Su-11 (Aircraft KL) and the proposed Su-13 were developments of it.