Sukhoi Su-11 (II)


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Sukhoi Su-11 (II)

The availability of a more powerful radar, the Uragan (Hurricane) 5B, matched with new medium-range AAMs available in alternative semi-active radar guidance and infra-red homing versions in the mid 'sixties, led to upgrading of the basic T-43 (Su-9). The larger-diameter dish of the Uragan I-band radar necessitated an intake centrebody of almost twice the cross-section area of that of the series Su-9. This, in turn, required increasing the intake lip diameter to allow for the same airflow, which, the AL-7F engine being retained, remained essentially unchanged. External piping ducts along the upper rear fuselage, similar to those of the Su-7BM, signified a revised fuel system, and armament comprised two medium-range missiles (one radar-guided and the other IR-homing). With the AL-7F-1 turbojet providing an afterburning thrust of 10,110kg, the revised T-43 series limited all-weather interceptor was adopted by the IA-PVO Strany under the (re-used) designation Su-11 as interim equipment pending introduction of the more advanced Su-15 that was being developed in parallel. The Su-11 supplemented and partly replaced the Su-9 until similarly withdrawn in the early 'eighties.

Sukhoi Su-11 (II)A three-view drawing (1667 x 1033)

  Take-off weight14000 kg30865 lb
  Empty weight9100 kg20062 lb
  Wingspan8.43 m28 ft 8 in
  Length17.4 m57 ft 1 in
  Wing area26.2 m2282.01 sq ft
  Max. speed1915 km/h1190 mph
  Ceiling17000 m55750 ft

Red Phoenix, 11.05.2012 08:28

No kidding there, Paul. The only surefire way to tell the difference is the shape of the intake and the dorsal spine of the 'Fishbed'.


paul scott, e-mail, 18.08.2009 18:10

Strange as its above /below profile section was identical to the MiG-21.


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