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Tundra (Kupol, EKS, 14F142)

Tundra (?) [TsNII Kometa]

The Tundra, Kupol or EKS (Edinaya Kosmicheskaya Sistema) series of satellites is the next generation of Russian early warning satellites to replace the US-K and US-KMO early warning satellites of the Oko-1 system. The new early warning system is called Kupol.

The development of the EKS started in 2000. The Russian Ministry of Defence awarded in 2007 a contract for the EKS system to RKK Energiya with a first test launch planned in 2009. Several problems, changing requirements and a court case led to long delays, postponing the first mission to the end of 2014.

Reportedly the Tundra satellites carry also a secure emergency communications payload to be used in case of a nuclear war.

They are launched on Soyuz-2-1b Fregat boosters into Molniya-orbits, inclined highly elliptical 12 h orbits. A geostationary version is also planned.

The first Tundra satellite was launched in the last quarter of 2015 on a Soyuz-2-1b Fregat booster. Until 2020, six satellites were planned to be orbited. At then end of 2020, four were on orbit.

Nation: Russia
Type / Application: Early warning, communication
Contractors: TsNII Kometa (prime); RKK Energiya (bus)
Configuration: USP Bus
Power: Deployable solar arrays, batteries
Lifetime: 7.5 years
Orbit: 1626 km × 38552 km, 63.37° (#1)
Satellite COSPAR Date LS Launch Vehicle Remarks
Kosmos 2510 (Tundra 11L, Kupol 11L, EKS #1) 2015-066A 17.11.2015 Pl LC-43/4 Soyuz-2-1b Fregat
Kosmos 2518 (Tundra 12L, Kupol 12L, EKS #2) 2017-027A 25.05.2017 Pl LC-43/4 Soyuz-2-1b Fregat
Kosmos 2541 (Tundra 13L, Kupol 13L, EKS #3) 2019-065A 26.09.2019 Pl LC-43/4 Soyuz-2-1b Fregat
Kosmos 2546 (Tundra 14L, Kupol 14L, EKS #4) 2020-031A 22.05.2020 Pl LC-43/4 Soyuz-2-1b Fregat
Kosmos 2552 (Tundra 15L, Kupol 15L, EKS #5) 2021-113A 25.11.2021 Pl LC-43/4 Soyuz-2-1b Fregat
Kosmos 2563 (Tundra 16L, Kupol 16L, EKS #6) 2022-145A 02.11.2022 Pl LC-43/4 Soyuz-2-1b Fregat


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