K-100 (Izdeliye 172, KS-172, AAM-L) (Russian Federation) - Jane's Air-Launched Weapons
Son Of R-172: K-100?, page 1
Ellerdale - Novator K-100
The Novator K-100 is a Indian/Russian air-to-air missile designed as an "AWACS killer ranges up to 300400 km (160-210 mi). The missile has had various names during its troubled history, including Izdeliye 172 ('Article 172'), AAM-L (RVV-L), KS172, KS-1, 172S-1 and R-172. The airframe appears to have been derived from the 9K37 Buk surface-to-air missile (SAM) but development stalled in the mid-1990s for lack of funds
NPO Novator started work in 1991 on a very long-range air-to-air missile with the Russian project designation Izdeliye 172. Initially called the AAM-L (RVV-L), it made its first public appearance at the International Defence Exhibition in Abu Dhabi in early 1993, followed by the Moscow Air Show later that year. It was described as having a range of 400 km (220 nmi); the mockup on display had a strong resemblance to the 9K37M1 Buk-M (SA-11 'Gadfly'). Apparently some flight-testing was done on a Su-27, but it appears that the Russians withdrew funding for the project soon afterwards.
The missile resurfaced as the KS172 in 1999, as part of a new export-led strategy whereby foreign investment in a 300 km (160 nmi)-range export model would ultimately fund a version for the Russian airforce. Again it appears that there were no takers.
In late 2003, the missile was offered again on the export market as the 172S-1. In March 2004, India was reported to have invested in the project and to be "negotiating a partnership" to develop the "R-172". In May 2005 the Indians were said to have finalised "an arrangement to fund final development and licence produce the weapon" in a joint venture similar to that which produced the successful BrahMos cruise missile.Since then the missile has had a higher profile, appearing at the 2005 Moscow Air Show on a Su-30 as the K-172, and a modified version being shown at the 2007 Moscow Air Show designated as the K-100-1. This name first appeared in a Sukhoi document in 2006, and sources such as Jane's now refer to the missile as the K-100
Guidance is by inertial navigation until the missile is close enough to the target to use active radar for terminal homing. The K-100 has an enlarged (350 mm (14 in)) derivative of the Agat 9B-1103M seeker used in the Vympel R-27 (AA-10 'Alamo'). It has a lock-on range of 40 km (22 nmi), described by an Agat designer as "one fifth or less of the overall range".