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Kh-28
The Kh-28 ((ロシア語:Х-28); Nisan-28; NATO:AS-9 'Kyle') was the first Soviet anti-radiation missile 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Use of the Kh-28 was restricted by its weight, limited seeker head, bulk and fuelling requirements, and it was superseded by the smaller, solid-fuel Kh-58 (AS-11 'Kilter') in the early 1980s.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.〔 Also available from (AccessMyLibrary )〕 Consequently, they paid little attention to the development of anti-radar missiles.〔 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').〔
The main difficulty came in the design of the APR-28 guidance system undertaken by CKB-111 (later NPO Avtomatika).〔 This meant that the Kh-28 missile was not ready until the 1970s.〔 Flight trials were carried out on a Yak-28N, but by then the Yak-28 had ceased production and was perceived as obsolete, and the K-28P system was cancelled.〔 Instead the Kh-28 was adapted for use by standard attack aircraft, in particular the Su-24 'Fencer-A' and Su-17M 'Fitter-C'.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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