EKS (satellite system)

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EKS (Edinaya Kosmicheskaya Systema)
Manufacturer RKK Energia (bus) and TsNII Kometa (payload.)[1]
Country of origin Russia[1]
Operator Russian Aerospace Defence Forces
Applications Early warning of missile attack
Specifications
Bus Possibly USP (Victoria)[1]
Power Deployable solar arrays
Batteries Yes
Equipment Military early warning system and a reported secure emergency communications payload to be used in case of a nuclear war.[1]
Regime Tundra orbits
Production
Status Development, first satellite EKS-1 launched in November 2015.[2][3]
Built 1
On order 5
Launched 1
Retired 0
Maiden launch EKS 1 / Tundra-L11, November 17, 2015[2]

EKS (reportedly standing for Russian: Единая космическая система, tr. Edinaya Kosmicheskaya Sistema meaning Unified Space System[4]) (GRAU designation: 14F142) is a developing[2][3] programme of Russian early warning satellites as a replacement for the US-KMO and US-K satellites of the Oko programme.[5]:{{{3}}} These satellites identify ballistic missile launches from outer space and complement early warning radars such as the Voronezh. This gives advance notice of a nuclear attack and would provide information to the A-135 missile defence system which protects Moscow, as well as other Russian missile defense and counterattack resources. Six satellites are planned to be initially orbited.[1]

Timeline

Information on the new EKS system is scarce but it appears that it was designed by Energia Corp in 1999-2000 and was selected against a proposal from Oko manufacturer NPO Lavochkin.[4] The Russian Ministry of Defence awarded the contract to Energia in 2007 with an expected delivery date of 2008, for a test launch in 2009.[6] In 2009 it was reported to be delayed until late 2011/early 2012.[7] In 2011 the Russian MoD sued Energia for the delay, claiming that a contract extension issued until May 2010 was invalid and asking for 262 million rubles in compensation.[8] According to news reports Energia said that the contract extension was valid and that the problem was with their subcontractors.[8] In addition they said that the Russian MoD kept changing the specification and demanding things that were beyond the capabilities of the industry.[8] The Russian MoD lost the court case. Energia delivered a satellite in 2009 but as of April 2012 there has not been a test launch.[6]

In April 2012 minister Alexander Sukhorukov announced that a contract had been signed to manufacture these satellites and that there would be a launch later in 2012.[9] The last satellites of the previous Oko system were Kosmos 2479,[10] launched on 30 March 2012, and Kosmos 2469, launched on 30 September 2010.[11]

Current system

EKS is designed as a replacement for the current system of early warning satellites called Oko, which had its first launch in 1972 [12]:{{{3}}}[13] and was described in 2005 as "hopelessly outdated".[14] Oko has two types of satellites: US-KMO are in geosynchronous orbits and have an infrared telescope to identify ballistic missile launches.[15] US-K are in molniya orbits and are an earlier model with optical telescopes and infrared sensors.[16] The Oko system has two control centres with the main one being Serpukhov-15 outside Moscow. [12]:{{{3}}}[12]:{{{3}}}

Oko is part of the Main Centre for Missile Attack Warning[17] which is under the Space Command (KK) of the Russian Aerospace Defence Forces.[18]

In 2014 Kommersant published that the first satellite, of a type named Tundra, would be launched in 2014. According to that report they would operate on highly elliptical orbits. The satellite was not launched in 2014, however.[19] It was eventually launched from the Plesetsk Cosmodrome on 17 November 2015, using a Soyuz 2.1b rocket with a Fregat stage, under the name EKS-1 / Tundra-11L.[2][3] Until 2020, five more satellites are planned to be orbited.[1]

Satellites

Satellite COSPAR international designator NORAD catalog # Orbit Launch Date End Date Estimated Operational Life
Kosmos 2510 (EKS 1) (Tundra 11L) 2015-066A 41032 Tundra 38,552 x 1,626 km, 63.37º 17 November 2015 Active

See also

  • Tundra orbit, the orbit to be used by the Tundra / EKS satellites

External links

References

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