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Molniya-1 No.2
Molniya-1 No.2, a Molniya (satellite), Molniya-1 satellite, was the first Soviet Union, Soviet communications satellite to be launched. However, it failed to achieve orbit due to a malfunction of the rocket which was carrying it. It was intended to operate in a Molniya orbit, from where it would be used to demonstrate communications between parts of the Soviet Union, USSR. Launch Molniya-1 No.2 was launched at 04:00 GMT on 4 June 1964, atop a Molniya (rocket), Molniya 8K78 launch vehicle, flying from Gagarin's Start, Site 1 at the Baikonur Cosmodrome. A motor circuit in the Servomechanism, servo controlling the core stage throttle failed 104 seconds into the flight, resulting in the throttle becoming jammed closed and the fuel supply to the engines being stopped. Prior to the release of information about its mission, NASA had incorrectly identified the launch of Molniya-1 No.2 as a failed attempt to launch a Zond program, Zond spacecraft on a Circumlunar trajectory, circumlu ... [...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; it creates a communication channel between a source transmitter and a 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 high frequency radio waves used for telecommunications links travel by line of sight and so are obstructed by the curve of the Earth. The purpose of communications ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
