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Sukhoi Su-11 (I)


In late May 1947, flight testing commenced of a development of the Su-9, the Su-11 or Samolet LK, which was destined to be the first Soviet jet fighter powered by a turbojet of indigenous design. The fuselage of the Su-11 was fundamentally similar to that of the Su-9, apart from some structural revision, but because of the appreciably larger engines, the wing structure was extensively modified, and a pressurized cockpit.

The Su-11 was powered by two Lyulka TR-1 turbojets each developing 2866-lb (1300-kg), these being mounted ahead of the main-spar. Armament was the same as that of the Su-9.

Flight trials were started in October 1947 and factory trials were completed in April 1948, but the TR-1 turbojet was inadequately developed and, like its predecessor, the Su-11 was handicapped by the suggestion that it copied German technology. Aleksandr Yakovlev telling Yosif Stalin that it was no more than a "warmed over Me 262".

Further development of the basic design concept followed with the Su-13.

Engines: two Lyulka TR-1 turbojets, 2866-lb (1300-kg)
Max take-off weight: 6350 kg / 13999 lb
Empty weight: 4495 kg / 9910 lb
Wingspan: 11.80 m / 39 ft 9 in
Length: 10.57 m / 35 ft 8 in
Height: 3.72 m / 12 ft 2 in
Wing area: 21.40 sq.m / 230.35 sq ft
Max. speed: 940 km/h / 584 mph
Range: 910 km / 565 miles

Sukhoi Su-11 (I)




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