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KAUR (satellite Bus)
The KAUR (Russian: , Universal Spacecraft Series) program was a series of satellite buses designed and manufactured by ISS Reshetnev (then NPO PM). Its design is based on a pressurized bus originally developed in the 1960s and has been used from low Earth Orbit to medium Earth orbit and even to GEO. It has four different generations and its different versions have been used from civilian communications to satellite navigation. Generations In total, 4 satellite platform generations were developed: KAUR-1, -2, -3 and -4. From 1965 to 2009, more than 400 communications satellites, both military and civilian, were built on the basis of these platforms and their upgraded versions. KAUR-1 The KAUR-1 was a pressurised cylinder with a diameter of 2 m, length of 3 m and weighed 800 kg. It had no propulsion system, and instead used a passive single-axis magneto-gravity stabilisation system. The KAUR-1 bus became the basis for a series of navigation and related satellites built by OKB-10, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KDU-414
The KDU-414 (''Russian Корректирующая Двигательная Установка'', Corrective Propulsion Unit), is a pressure-fed liquid rocket Propulsion Unit developed and produced by the Isayev Design Bureau (today known as KhimMash). From 1960 onward, it powered several unmanned Soviet Spacecraft, including the first series of Molniya satellites, several Kosmos satellites as well as the space probes Mars 1, Venera 1, Zond 2 and Zond 3, featured as a part of standardized spacecraft buses known as KAUR-2, 2MV and 3MV. The Corrective Propulsion Unit consists of a single chamber 'S5.19' liquid rocket engine and a conical thermal protection cowl containing the spherical propellant tank. A barrier splits the tank into two separate compartments, filled with the propellant, UDMH, and the oxidizer, IRFNA, respectively. This combination of propellants is hypergolic A hypergolic propellant is a rocket propellant combination used in a rocket engine, whose comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altair SR Relay Satellite
Altair is the brightest star in the constellation of Aquila and the twelfth-brightest star in the night sky. It has the Bayer designation Alpha Aquilae, which is Latinised from α Aquilae and abbreviated Alpha Aql or α Aql. Altair is an A-type main-sequence star with an apparent visual magnitude of 0.77 and is one of the vertices of the Summer Triangle asterism; the other two vertices are marked by Deneb and Vega. It is located at a distance of from the Sun. Altair is currently in the G-cloud—a nearby interstellar cloud formed from an accumulation of gas and dust. Altair rotates rapidly, with a velocity at the equator of approximately 286 km/s.From values of ''v'' sin ''i'' and ''i'' in the second column of Table 1, Monnier et al. 2007. This is a significant fraction of the star's estimated breakup speed of 400 km/s. A study with the Palomar Testbed Interferometer revealed that Altair is not spherical, but is flattened at the poles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raduga (satellite)
Raduga () can refer to : * MKB Raduga, a Russian maker of missile systems formerly known as OKB Raduga * VBK-Raduga, an uncrewed reentry capsule used to return material from the Russian Mir space station * Raduga (satellite), a series of Russian communications satellites * Raduga Publishers, a publishing house of the Soviet Union * Rainbow (1944 film), ''Rainbow'' (1944 film), , a 1944 film directed by Mark Donskoy * Raduga (radio), a Russian-language music radio station in Lithuania * Raduga (nuclear test) a Soviet nuclear test {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellites
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 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 satellites is to re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Buses
A satellite or an artificial satellite is an object, typically a spacecraft, placed into orbit around a Astronomical object, celestial body. They have a variety of uses, including communication relay, weather forecasting, navigation (GPS), broadcasting, scientific research, and Earth observation. Additional military uses are reconnaissance, Early warning system, early warning, signals intelligence and, potentially, weapon delivery. Other satellites include the final rocket stages that place satellites in orbit and formerly useful satellites that later become defunct. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have a method of communication to ground stations, called Transponder (satellite communications), transponders. Many satellites use a Satellite bus, standardized bus to save cost and work, the most popular of which a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highly Elliptical Orbit
A highly elliptical orbit (HEO) is an elliptic orbit with high eccentricity, usually referring to one around Earth. Examples of inclined HEO orbits include Molniya orbits, named after the Molniya Soviet communication satellites which used them, and Tundra orbits. Many US satellites also have used these orbits, satellites such as the Trumpet electronics intelligence satellites. The acronym HEO normally is expanded to Highly Eccentric Orbit by orbital analysts since all orbits around planets, etc are ellipses - the term "highly elliptical" is not very clear as to what is exaggerated. It would be more proper to call these orbits "elongated" than "highly elliptical". Highly eccentric orbits have two main uses - as transfer orbits and as good orbits for communication with or surveillance of the Polar regions. The transfer orbit was proposed by the German scientist Walter Hohmann in 1925, it connects two circular orbits, a lower one and a higher one, with an eccentric orbit. Ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekspress (satellite Bus)
The Ekspress (Russian: ) is a highly flexible satellite bus designed and manufactured by ISS Reshetnev. It is an unpressurized bus originally designed for GEO, but that has been adapted for medium Earth orbit and to highly elliptical orbit. It has different versions and has been used from civilian communications to satellite navigation. Platform variations The Ekspress bus has two main platforms: the 1000 light to medium version and the 2000, for heavy satellites. There was a project for a third platform, the 4000, but it has not yet been used. Ekspress-1000 Series The Ekspress-1000 (Russian: ) in its different variations offers an platform for small to medium satellites. It is a direct to GEO bus for total spacecraft weights from to and having a power production from 3 kW to 8 kW with a life expectancy of 15 years. It is designed for directly stacking up to 3 of the smallest version (Ekspress-1000K) or 2 of the bigger ones. *Ekspress-1000K (Russian: ): The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ekspress (satellite Constellation)
Ekspress (Russian: , ''literally'' Express) is a communication and broadcasting system developed and operated by Russian Satellite Communications Company (RSCC). It is the largest network of Russia and its slots cover an arc in geostationary orbit from 14.0° West to 145.0° East. This allows it to cover the whole territory of Russia, the CIS, Europe, the Middle East, Africa, the Asia-Pacific region, North and South America, and Australia. The only other Russian civilian satellite operator is Gazprom Space Systems with its Yamal constellation. Ekspress satellite series While the Ekspress constellation started with a single model, during the years it has used many suppliers and many models. See also * Telecommunications in Russia * Russian Satellite Communications Company – Satellite communication company of the Ministry of Telecom and Mass Communications of the Russian Federation and owner of the Ekspress satellite series. * Gazprom Space Systems – Satellite c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luch (satellite)
The ''Luch'' (; lit. ''Ray'') Satellite Data Relay Network (SDRN), also referred to as ''Altair'' and ''Gelios'', is a series of geosynchronous Russian relay satellites, used to transmit live TV images, communications and other telemetry from the Soviet/Russian space station ''Mir'', the Russian Orbital Segment (ROS) of the International Space Station and other orbital spacecraft to the Earth, in a manner similar to that of the US Tracking and Data Relay Satellite System. First generation The first generation of satellites was created by NPO-PM using the satellite platform KAUR-4 (its first use) and had the code name "Altair" (index GUKOS - 11F669). The system was conceived as part of the second generation of the Global Satellite Data Relay Network (Глобальная Космическая Командно-Ретрансляционная система (GKKRS)) and was developed by decree of the Soviet Council of Ministers of February 17, 1976 (the other part of this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tselina (satellite)
Tselina () were a series of military SIGINT satellites originally developed in the former Soviet Union and used in the past Russian military. These satellites could pinpoint the exact location of objects emitting radio signals. They could even identify the type of emitter, its operational modes, and its activity level. This function proved valuable for detecting potential military operations by monitoring increased radio communication activity. By providing early warning of such activity, Tselina offered valuable intel that might not have been obtainable through other means. Variants Initially divided into "Overview" (Tselina-O) and "Detailed" (Tselina-D), since about 1980 the system has been integrated into a single satellite, Tselina-P, which is also known as Tselina-2. The system's primary subject was enemy's radar equipment. Tselina had been numbered as part of the Kosmos series. In total 130 Tselina satellites were launched. * Tselina-O satellites were launched using Kos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potok (satellite)
Potok may refer to: Places Bulgaria *Potok, Bulgaria, a village in Gabrovo Province Croatia * Potok, Berek, a village *Potok, Sisak-Moslavina County, a village *Potok, a local name of the Pazinčica River * Potok, Rijeka, a section of Rijeka Poland * Potok, Gmina Sobienie-Jeziory in Masovian Voivodeship (east-central Poland), a settlement * Potok, Kutno County in Łódź Voivodeship (central), a village * Potok, Kuyavian-Pomeranian Voivodeship (north-central), a village * Potok, Lublin Voivodeship (east), a village * Potok, Lubusz Voivodeship (west), a village * Potok, Opatów County in Świętokrzyskie Voivodeship (south-central), a village *Potok, Podkarpackie Voivodeship (south-eastern), a village * Potok, Pomeranian Voivodeship (north), a settlement * Potok, Sieradz County in Łódź Voivodeship (central), a village * Potok, Subcarpathian Voivodeship (south-east) * Potok, Staszów County, Świętokrzyskie Voivodeship (south-central), a village Romania *Potok, the Hungarian n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
