View source for Sukhoi Su-11

{{Short description|Soviet interceptor aircraft}}
{{For|the original aircraft designated "Su-11"|Sukhoi Su-11 (1947)}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{{Infobox aircraft
 |name= Su-11 <!--please avoid stating manufacturer in this field; it's stated two lines below -->
 |image= Su-11 VVS museum.jpg
 |caption=
 |type= [[Interceptor aircraft]]
 |national_origin= Soviet Union
 |manufacturer= [[Sukhoi]]
 |first_flight= 25 December 1958
 |introduction= 1964
 |retired= 1983
 |primary_user= [[Soviet Air Forces]]
 |more_users=
 |produced= 1962–1965
 |number_built= 108
 |developed_from= [[Sukhoi Su-9]]
 |variants= [[Sukhoi T-49]]
 |developed_into=
}}

The '''Sukhoi Su-11''' ([[NATO reporting name]]: '''Fishpot-C''') is an [[interceptor aircraft]] used by the [[Soviet Union]] during the [[Cold War]].

==Design and development==
The '''Su-11''' was an upgraded version of the [[Sukhoi Su-9]] ('Fishpot') interceptor, which had been developed in parallel with the [[OKB]]'s [[swept wing]] [[Sukhoi Su-7|Su-7]] [[fighter bomber]]. Recognizing the Su-9's fundamental limitations, Sukhoi began work on the '''Su-11''', which first flew in [[1961 in aviation|1961]] as the '''T-47''' prototype.

The Su-11 shared the Su-9's [[delta wing]], swept [[tail]]planes and cigar-shaped fuselage, as well as the circular nose intake, but had a longer nose to accommodate the more powerful 'Oryol' (''Eagle''; [[NATO reporting name]] 'Skip Spin') radar set. A more powerful [[Lyulka AL-7|Lyulka AL-7F-1]] [[turbojet]] was installed, providing 9.8&nbsp;kN (2,210&nbsp;lbf) more afterburning thrust for improved climb rate and high-altitude performance (and to compensate for increased weight). The Su-11 can be distinguished from the Su-9 by the external fuel pipes atop the fuselage, aft of the cockpit.

The Su-9's beam-riding [[Kaliningrad K-5|K-5]] missiles were replaced by a pair of [[Kaliningrad K-8|R-98 (AA-3 'Anab')]] weapons, usually one R-98MR [[semi-active radar homing]] and one R-98MT [[infrared homing|infrared]] guided. Like many interceptors of the period, it had no cannon.

Production of the definitive Su-11-8M began in [[1962 in aviation|1962]], ended in [[1965 in aviation|1965]], after about 108 aircraft had been delivered, although it is believed that at least some Su-9s were upgraded to Su-11 form.

A conversion [[trainer (aircraft)|trainer]] version, the '''Su-11U''' 'Maiden,' was also developed; Similar to the Su-9U, it had full armament and radar systems for training purposes, but the second seat reduced its already marginal fuel capacity and was not intended for combat use.

==Operational history==
Development problems and accidents delayed squadron introduction with the [[Soviet Air Force]] (VVS)/ [[Soviet Air Defence Forces]] (PVO) until [[1964 in aviation|1964]] and only small number of aircraft were delivered.

Even with the superior radar, the Su-11 remained heavily dependent on [[ground control interception]] (GCI) to vector its pilot onto targets. It had no capability against low-flying aircraft either, and Sukhoi OKB considered the Su-11 to be a misfire, much inferior to the far more formidable [[Su-15]] ('Flagon'). Nevertheless, a few examples remained operational until the early 1980s. The last Su-11s left front-line service around [[1983 in aviation|1983]].

==Operators==
;{{USSR}}
*[[Soviet Air Defence Forces]]

==Specifications (Su-11)==
[[File:Sukhoi Su-11.png|thumb]]
{{Aircraft specs
|ref=''OKB Sukhoi : a history of the design bureau and its aircraft''<ref name=Antonov>{{cite book |last1=Antonov |first1=Vladimir |last2=Gordon |first2=Yefim |last3=Gordyukov |first3=Nikolai |last4=Yakovlev |first4=Vladimir |last5=Zenkin |first5=Vyacheslav |last6=Carruth |first6=Lenox |last7=Miller |first7=Jay |title=OKB Sukhoi : a history of the design bureau and its aircraft |date=1996 |publisher=Midland Publishing |location=Earl Shilton |isbn=9781857800128 |edition=1st}}</ref>
|prime units?=met
<!--
        General characteristics
-->
|crew=1
|length m=18.225
|length note=
|span m=8.536
|span note=
|height m=4.7
|height note=
|wing area sqm=34
|wing area note=
|aspect ratio=<!-- sailplanes -->
|airfoil=
|empty weight kg=8562
|empty weight note=
|gross weight kg=12674
|gross weight note=
|max takeoff weight kg=13986
|max takeoff weight note=
|fuel capacity={{cvt|3440|kg}} internal : {{cvt|4620|kg}} with external tanks
|more general=
<!--
        Powerplant
-->
|eng1 number=1
|eng1 name=[[Lyulka AL-7]]F-2
|eng1 type=[[afterburning turbojet]] engine
|eng1 lbf=22270
|eng1 note=
<!--
        Performance
-->
|max speed kmh=2340
|max speed note=at {{cvt|1100|m|sigfig=2}} {{citation needed|date=August 2019}}
|max speed mach=2.2
|cruise speed kmh=
|cruise speed note=
|stall speed kmh=
|stall speed note=
|never exceed speed kmh=
|never exceed speed note=
|range km=
|range note=
|combat range km=500
|combat range note={{citation needed|date=August 2019}}
|ferry range km=1125
|ferry range note={{citation needed|date=August 2019}}
|endurance=1 hour 28 minutes internal fuel; 1 hour 59 minutes with external fuel
|ceiling m=18000
|ceiling note=
|g limits=<!-- aerobatic -->
|roll rate=<!-- aerobatic -->
|climb rate ms=136.7
|climb rate note=
|time to altitude=
|wing loading kg/m2=76.09
|wing loading note={{citation needed|date=August 2019}}
|fuel consumption kg/km=
|thrust/weight=0.71
|more performance=<br/>
*'''Take-off speed (internal fuel):''' {{cvt|330|-|340|km/h|mph kn|sigfig=2}}
*'''Take-off speed (with external fuel):''' {{cvt|360|-|380|km/h|mph kn|sigfig=2}}
*'''Landing speed (internal fuel):''' {{cvt|280|-|290|km/h|mph kn|sigfig=2}}
*'''Landing roll:''' {{cvt|1000|-|1200|m|sigfig=2}}
<!--
        Armament
-->
|guns= 
|bombs= 
|rockets= 
|missiles= 2 × [[K-8 (missile)|K-8]] [[air-to-air missile]]s
|hardpoints=
|hardpoint capacity=
|hardpoint rockets=
|hardpoint missiles=
|hardpoint bombs=
|hardpoint other=

|avionics=
}}

==See also==
{{Portal|Aviation}}
{{aircontent
|related=
*[[Sukhoi Su-7]]
*[[Sukhoi Su-9]]
*[[Sukhoi Su-15]]
|similar aircraft=
*[[Lockheed F-104 Starfighter]]
*[[Mikoyan-Gurevich MiG-21]]
}}

==References==
{{reflist}}

==External links==
{{Commons category|Sukhoi Su-11}}
*[http://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=927 SU-11 Military Factory]
*[http://www.globalsecurity.org/military/world/russia/su-9.htm Su-9/11 FISHPOT Global Security]
*[http://www.airwar.ru/enc/fighter/su11.html Airwar.ru (RUS)]

{{Sukhoi aircraft}}

[[Category:Sukhoi aircraft|Su-11]]
[[Category:1960s Soviet fighter aircraft]]
[[Category:Single-engined jet aircraft]]
[[Category:Delta-wing aircraft]]
[[Category:Aircraft first flown in 1958]]
[[Category:Mid-wing aircraft]]
[[Category:Aircraft with retractable tricycle landing gear]]