| Kh-58 (NATO reporting name: AS-11 'Kilter') | |
|---|---|
 Kh-58U in theUkrainian Air Force Museum | |
| Type | Air-launchedanti-radiation missile,surface-to-surface missile |
| Place of origin | Soviet Union/Russia |
| Service history | |
| In service | 1982–present[1] |
| Used by | Russia, India, Algeria, Iran[1] |
| Wars | |
| Production history | |
| Designed | 1970s |
| Manufacturer | Raduga NPO |
| Specifications | |
| Mass | 650 kg (1,430 lb)[4] |
| Length | 480 cm (15 ft 9 in)[4] |
| Diameter | 38 cm (15.0 in)[4] |
| Wingspan | 117 cm (46.1 in)[4] |
| Warhead | High Explosive[1] |
| Warhead weight | 149 kg (328 lb)[4] |
| Engine | Solid rocket[1] |
Operational range | Kh-58: up to 120 km (65 nmi) Kh-58U :250 km (130 nmi)[1] Kh-58E: 46–200 km (25–110 nmi)[4] |
| Maximum speed | Mach 3.6 |
Guidance system | Inertial with passive radar seeker[1] |
Launch platform | Su-24M,[1] Mig-25BM,[1] Su-22M4,[4] Su-25TK,[4] Su-30MK,[5] Su-57E[6] |
TheKh-58 (Russian:Х-58;NATO:AS-11 'Kilter') is a Sovietanti-radiation missile with a range of 120 km. As of 2004[update] the Kh-58U variant was still the primary anti-radiation missile of Russia and its allies.[1] It is being superseded by theKh-31. TheNATO reporting name is "Kilter".
The Bereznyak design bureau had developed the liquid-fuelledKh-28 (AS-9 ‘Kyle’) and theKSR-5P (AS-6) anti-radiation missiles.[5] They merged with Raduga in 1967, so Raduga was given the contract in the early 1970s to develop a solid-fuel successor to theKh-28 to equip the new Su-24M 'Fencer-D' attack aircraft.[5] Consequently, the project was initially designated the Kh-24, before becoming the Kh-58.[citation needed]
During the 1980s a longer-range variant was developed, the Kh-58U, with lock-on-after-launch capability. Since the fall of the Soviet Union, Raduga have offered several versions for export.[5]
It was designed to be used in conjunction with the Su-24's L-086A "Fantasmagoria A" or L-086B "Fantasmagoria B" target acquisition system.[1] The range achieved depends heavily on the launch altitude, thus the original Kh-58 has a range of 36 km from low level, 120 km from 10,000 m (32,800 ft), and 160 km from 15,000 m (49,200 ft).[1]
Like other Soviet missiles of the time, the Kh-58 could be fitted with a range of seeker heads designed to target specific air defence radars such asMIM-14 Nike-Hercules orMIM-104 Patriot.[5]
The Kh-58 was deployed in 1982 on theSu-24M 'Fencer D' in Soviet service.[1] The Kh-58U entered service in 1991 on the Su-24M and MiG-25BM 'Foxbat-F'.[1] The Kh-58E version can be carried on the Su-22M4 and Su-25TK as well,[4] while the Kh-58UShE appears to be intended for Chinese Su-30MKK's.[5]
Kh-58U missiles were first used in combat in November 1987 by Iraqi MiG-25BMs during the Iran-Iraq war against IranianMIM-23B Hawk batteries, disabling at least one radar. In July 1988, Iraqi forces used upgraded Kh-58Us and Kh-31Ps against Iranian Westinghouse ADS-4 low-band and long-rangeearly-warning radars, succeeding in destroying a radar site inSubashi with two missiles.[2]
In August 2007, a Russian Kh-58 missile was fired at a Georgian radar site near the town of Tsitelubani, but it missed and failed to explode.[7][8] During the 2008Russo-Georgian war, Russian forces made no use of anti-radiation missiles, likely due Georgian air defenses keeping their radar systems turned off until Russian aircraft were in range and turn them back on long enough to acquire and fire at their targets, and a possible lack of confidence of the Russian Air Force in their anti-radiation missiles capabilities following the2007 Georgia missile incident.[7]
The Kh-58 have also seen use during the 2022 Russian invasion of Ukraine. According to senior sources of the Ukrainian Air Force, some9K33 Osa and9K37 Buk systems were destroyed by Kh-31P and Kh-58 missiles during the war.[3]
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Some Western sources have referred to a Kh-58A that is either optimised for naval radars or has an active seeker head for use as an anti-shipping missile - it probably represents another name for the Kh-58U.[citation needed]
Ehttps://www.armyrecognition.com/news/aerospace-news/2025/russias-su-57-jet-displays-internal-bay-carrying-two-kh-58-missiles-for-stealth-strike-role was invoked but never defined (see thehelp page).