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Gorizont 33
Gorizont 33 ( meaning "Horizon 33"), also known as Gorizont 45L was a Russian communications satellite operated by Kosmicheskiya Svyaz (RSCC). It was the last satellite to be launched as part of the Gorizont constellation. Constructed by NPO Prikladnoi Mekhaniki (NPO PM), it was based on the KAUR-3 satellite bus. Its launch was contracted by Khrunichev State Research and Production Space Center, using a Proton-K / Briz-M launch vehicle. Launch The launch occurred at 02:59:00 UTC on 6 June 2000 from Site 81/24 at the Baikonur Cosmodrome. This was the first successful launch of a Proton with a Briz-M upper stage, and as the previous Proton/Briz-M launch failed during the second stage burn, on 5 July 1999, the first firing of a Briz-M in flight. The Proton itself flew with uprated engines, increasing its payload capacity ahead of the launch of Zvezda, a little over a month later, on 12 July 2000. The launch was conducted as a test flight of the Proton, and the satellite woul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
