R-27 Zyb
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The R-27 Zyb[1] was a submarine-launched ballistic missile developed by the Soviet Union and employed by the Soviet Navy from 1968 through 1988. NATO assigned the missile the reporting name SS-N-6 Serb. In the USSR, it was given the GRAU index 4K10. It was a liquid fuel rocket using a hypergolic combination of unsymmetrical dimethylhydrazine as fuel and inhibited red fuming nitric acid as oxidizer. Between 1974 and 1990, 161 missile launches were conducted, with an average success rate of 93%.[2] Total production was 1800 missiles[3]
The R-27 missiles were deployed on the Yankee I submarines, including the K-219.
Variants
R-27
- Total Mass: 14.200 kg
- Diameter: 1.50 m
- Total Length: 8.89 m
- Span: 1.50 m
- Payload: 650 kg
- Warhead: single nuclear: 1.0 Mt
- Maximum range: 2400 km
- CEP: 1.9 km
- Launch platform: project 667A submarines
R-27U
- Total Mass: 14.200 kg
- Diameter: 1.50 m
- Total Length: 8.89 m
- Span: 1.50 m
- Payload: 650 kg
- Warhead: 3 : 200 Kt
- Maximum range: 3,000 km
- CEP: 1.3 km
- Launch platform: project 667AU submarines
R-27K
The 4K18 was a Soviet intermediate-range ballistic anti-ship missile (also known as R-27K, where "K" stands for Korabelnaya which means "ship-related") NATO SS-NX-13. The missile was a two stage development of the single stage R-27, the second stage containing the warhead as well as propulsion and terminal guidance.[4] Initial submarine testing began on 9 December 1972 on board the K-102, a project 605 class submarine, a modified Project 629/ NATO Golf class lengthened 17.1m (formerly B-121), to accommodate four launch tubes as well as the Rekord-2 fire control system, the Kasatka B-605 Target acquisition system and various improvements to the navigation and communications systems. Initial trials ended on 18 December 1972 because the Rekord-2 fire control system hadn´t been delivered yet. After a number of delays caused by several malfunctions, test firings were finally carried out between 11 September and 4 December 1973. Following the initial trials, the K-102 continued making trial launches with both the R-27 and the R-27K, until it was accepted for service on 15 August 1975.[5]
Using external targeting data, the R-27K/SS-NX-13 would have been launched underwater to a range of between 350-400 nm (650–740 km), covering a "footprint" of 27 nm (50 km). The Maneuvering Re-Entry vehicle (MaRV) would then home in on the target with a CEP of 400 yards (370m). Warhead yield was between 0.5-1MT.[6]
The missile system never became operational, since every launch tube used for the R-27K counted as a strategic missile in the SALT agreement, and they were considered more important.[7]
Although the R-27K could fit in the launch tubes of the Project 667A (NATO Yankee class), the subs lacked the necessary equipment to target and fire the missile.[8]
North Korea
Operator
Soviet Union- The Soviet Navy was the only operator of the R-27.
Democratic People's Republic of Korea- R-27 copy, BM25/Musudan-1
Iran- R-27 copy, BM25/Musudan-1
References
- ^ Aviation.ru - Missiles
- ^ USSR R-27 missile
- ^ http://inbsite.com/missiles1.html
- ^ Polmar, Norman (2004). Coldwar submarines. USA: Potomac Books Inc. p. 180. ISBN 978-1-57488-594-1.
- ^ Polmar, Norman (2004). Coldwar submarines. USA: Potomac Books Inc. p. 180. ISBN 978-1-57488-594-1.
- ^ Polmar, Norman (2004). Coldwar submarines. USA: Potomac Books Inc. p. 180. ISBN 978-1-57488-594-1.
- ^ Polmar, Norman (2004). Coldwar submarines. USA: Potomac Books Inc. p. 180. ISBN 978-1-57488-594-1.
- ^ Polmar, Norman (2004). Coldwar submarines. USA: Potomac Books Inc. p. 180. ISBN 978-1-57488-594-1.