US-KS
Manufacturer | NPO Lavochkin |
---|---|
Country of origin | ![]() ![]() |
Operator | VKS |
Applications | Missile defence |
Specifications | |
Bus | |
Launch mass | 2,400 kilograms (5,300 lb) |
Regime | Geosynchronous |
Dimensions | |
Production | |
Status | Retired |
Launched | 7 |
Operational | 0 |
Retired | 7 |
Failed | None known |
Lost | 0 |
Maiden launch | Kosmos 775 8 October 1975 |
Last launch | Kosmos 2345 14 August 1997 |
Related spacecraft | |
Derived from | US-K |
Derivatives | US-KMO |
Upravlyaemy Sputnik Kontinentalny Statsionarny (Russian: Управляемый Спутник Континентальный Стационарный meaning Stationary Continental Controllable Satellite), or US-KS (Russian: УС-КС), also known as Oko-S, was a series of Soviet, and later Russian, missile detection satellites launched as part of the Oko (Russian: "eye") programme.[1] US-KS was a derivative of the US-K satellite, optimised for operations in geosynchronous orbit. Seven were launched between 1975 and 1997, when launches ended in favour of the modernised US-KMO.[2] US-KS had the GRAU index 74Kh6. As of December 2015, the entire Oko programme is being replaced by the new EKS system.[3]
Manufactured by NPO Lavochkin, US-KS satellites had a launch mass of 2,400 kilograms (5,300 lb), and a dry mass of 1,250 kilograms (2,760 lb). Built on a three-axis stabilised cylindrical bus with a diameter of 1.7 metres (5 ft 7 in) and a length of 2 metres (6 ft 7 in), the satellites carry 50 centimetres (20 in) infrared telescopes to detect the heat of missile exhausts.[4]
US-KS satellites were launched by Proton-K carrier rockets, with Blok DM and DM-2 upper stages. The first satellite to be launched was a prototype, which was followed by six operational spacecraft. With a spacecraft positioned at a longitude of 24° West, the Soviet Union could continuously monitor missile launches from the United States.[4]
References[]
- ^ Zak, Anatoly. "Oko early-warning satellite". RussianSpaceWeb. Retrieved 6 March 2012.
- ^ Krebs, Gunter. "US-KMO (71Kh6)". Gunter's Space Page. Retrieved 6 March 2012.
- ^ "Soyuz 2-1B launches EKS-1 to upgrade Russian Early Warning System". Retrieved 2015-12-17.
- ^ a b Krebs, Gunter. "US-KS (74Kh6)". Gunter's Space Page. Retrieved 6 March 2012.
- Oko
- Military satellites
- Military satellites of Russia
- Soviet Union spacecraft stubs
- Russian spacecraft stubs