
thumb|Presumed Kh-28 emitting IRFNA (Inhibited Red fuming nitric acid) fumes – Iraq, April 1991 The Kh-28 (; Nisan-28; NATO: '''AS-9 'Kyle'''') was the first Soviet anti-radiation missile (ARM) for tactical aircraft. It entered production in 1973 and is still carried on some Sukhoi Su-22s in developing countries but is no longer in Russian service. Use of the Kh-28 was restricted by its weight, limited seeker head, bulk and fuelling requirements, and it was superseded by the smaller, solid-fuel Kh-58 (AS-11 'Kilter') in the early 1980s.
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thumb|Presumed Kh-28 emitting IRFNA (Inhibited Red fuming nitric acid) fumes – Iraq, April 1991 The Kh-28 (; Nisan-28; NATO: '''AS-9 'Kyle'''') was the first Soviet anti-radiation missile (ARM) for tactical aircraft. It entered production in 1973 and is still carried on some Sukhoi Su-22s in developing countries but is no longer in Russian service. Use of the Kh-28 was restricted by its weight, limited seeker head, bulk and fuelling requirements, and it was superseded by the smaller, solid-fuel Kh-58 (AS-11 'Kilter') in the early 1980s.
==Development== Soviet offensive doctrine in the early 1960s assumed that widespread use of nuclear weapons would disable Western radar-based air defence systems through electromagnetic pulses (EMP) effects. Consequently, they paid little attention to the development of ARMs. However, in January 1963 the Berezniak design bureau (which became MKB Raduga in 1967) was tasked with developing such a missile as part of the K-28P weapon complex based around a "Wild Weasel" version of the Yak-28 'Brewer' bomber (hence -28; the 'K' stands for kompleks, P stands for protivradiolokatsyonny 'anti-radar').
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