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Yamal 101
Yamal-101 (Russian language, Russian: ) was a geostationary orbit, geostationary communications satellite operated by Gazprom Space Systems and built by Energia (corporation), RSC Energia. It was, along with Yamal-102 the first communications satellite of the Yamal (satellite constellation), Yamal programme and the first iteration of the USP (satellite bus), USP Bus. It was a satellite with 2200 watts of power (1300 watts available for the payload) on an unpressurized bus. It had eight SPT-100, SPT-70 Electrically powered spacecraft propulsion, electric thrusters by OKB Fakel for Orbital station-keeping, station keeping. Its payload was 12 C band (IEEE), C-band equivalent Transponder (satellite communications), transponders supplied by SSL (company), Space Systems/Loral. History It was launched along Yamal-102, on 6 September 1999 at 16:36:00 Coordinated Universal Time, UTC from Baikonur Cosmodrome, Baikonur Baikonur Cosmodrome Site 81, Site 81/23 by a Proton-K / Blok D , Blo ... [...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 sate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Language
Russian (russian: русский язык, russkij jazyk, link=no, ) is an East Slavic languages, East Slavic language mainly spoken in Russia. It is the First language, native language of the Russians, and belongs to the Indo-European languages, Indo-European language family. It is one of four living East Slavic languages, and is also a part of the larger Balto-Slavic languages. Besides Russia itself, Russian is an official language in Belarus, Kazakhstan, and Kyrgyzstan, and is used widely as a lingua franca throughout Ukraine, the Caucasus, Central Asia, and to some extent in the Baltic states. It was the De facto#National languages, ''de facto'' language of the former Soviet Union,1977 Soviet Constitution, Constitution and Fundamental Law of the Union of Soviet Socialist Republics, 1977: Section II, Chapter 6, Article 36 and continues to be used in public life with varying proficiency in all of the post-Soviet states. Russian has over 258 million total speakers worldwide. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellites Using The USP Bus
A satellite or artificial satellite is an object intentionally placed into orbit in outer space. 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 transponders. Many satellites use a standardized bus to save cost and work, the most popular of which is small CubeSats. Similar satellites can work together as a group, forming constellations. Because of the high launch cost to space, satellites are designed to be as lightweight and robust as possible. Most communication satellites are radio relay stations in orbit and carry dozens of transponders, each with a bandwidth of tens of megahertz. Satellites are placed from the surface to orbit by launch vehicles, high enough to avoid orbital decay by the atmosphere. Satellites can then change or maintain the orbit by pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacecraft Launched In 1999
A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket). On a sub-orbital spaceflight, a space vehicle enters space and then returns to the surface without having gained sufficient energy or velocity to make a full Earth orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers from start or on orbit (space stations) only, whereas those used for robotic space missions operate either autonomously or telerobotically. Robotic spacecraft used to support scientific res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamal Satellites
Yamal may refer to: *Yamal Peninsula, a peninsula in Siberia *Yamalo-Nenets Autonomous Okrug, a federal subject of Russia *Yamal Airlines, an airline based in Salekhard, Russia * ''Yamal'' (icebreaker), a nuclear-powered ''Arktika''-class Russian icebreaker *Yamal (satellite constellation), a satellite communication constellation by Gazprom Space Systems *Yamal project, a long-term project open the large natural gas fields in the Yamal Peninsula *Yamal–Europe pipeline *Yamal LNG See also *Yamalo-Nenets Autonomous Okrug The Yamalo-Nenets Autonomous Okrug (YaNAO; russian: Яма́ло-Не́нецкий автоно́мный о́круг (ЯНАО), ; yrk, Ямалы-Ненёцие автономной ӈокрук, ) or Yamalia (russian: Ямалия) is a fed ..., a district in Tyumen Oblast, Western Siberia, Russia * Yamalsky District, Tyumen Oblast, Western Siberia, Russia {{Disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gazprom
PJSC Gazprom ( rus, Газпром, , ɡɐzˈprom) is a Russian majority state-owned multinational energy corporation headquartered in the Lakhta Center in Saint Petersburg. As of 2019, with sales over $120 billion, it was ranked as the largest publicly listed natural gas company in the world and the largest company in Russia by revenue. In the 2020 ''Forbes'' Global 2000, Gazprom was ranked as the 32nd largest public company in the world. The Gazprom name is a contraction of the Russian words ''gazovaya promyshlennost'' (, gas industry). In January 2022, Gazprom displaced Sberbank from the first place in the list of the largest companies in Russia by market capitalization. Gazprom is vertically integrated and is active in every area of the gas industry, including exploration and production, refining, transport, distribution and marketing, and power generation. In 2018, Gazprom produced twelve percent of the global output of natural gas, producing 497.6 billion cubic meters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Panels On Spacecraft
Spacecraft operating in the inner Solar System usually rely on the use of power electronics-managed photovoltaic solar panels to derive electricity from sunlight. Outside the orbit of Jupiter, solar radiation is too weak to produce sufficient power within current solar technology and spacecraft mass limitations, so radioisotope thermoelectric generators (RTGs) are instead used as a power source.NASA JPL Publication: Basics of Space Flight, Chapter 11. Typical Onboard Systems, Electrical Power Supply and Distribution Subsystems, History The first practical silicon-based solar cells were introduced by Bell Labs in April 1954. They were initially about 6% efficient, but improvements began to raise this number almost immediately. Bell had been interested in the idea as a system to provide power at remote telephone repeater stations, but the cost of the devices was far too high to be practical in this role. Aside from small experimental kits and uses, the cells remained largely unus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blok D
Blok D (russian: Блок Д meaning Block D) is an upper stage used on Soviet and later Russian expendable launch systems, including the N1, Proton-K and Zenit. The stage (and its derivatives) has been included in more than 320 launched rockets . By 2002 its modification Blok DM had a 97% success rate in 218 flights since 1974, and 43 successful missions in 1997–2002. The stage was developed in 1960s as the fifth stage (' Д' is the fifth letter in the Cyrillic alphabet) for the Soviet Moonshot N1 rocket. The stage first flew in March 1967 while testing Zond of the moonshot program system. During manned lunar flight Blok D would be used for mid-course corrections on the flight to the Moon, then to place the lunar orbiter and lander into a lunar orbit, and decelerate moon-lander out onto its landing trajectory. Blok D was also included as fourth stage of Proton-K and as such flew on unmanned Soviet missions to Moon, Mars ( Mars 3) and Venus. It was used in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transponder (satellite Communications)
A communications satellite's transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. It is mainly used in satellite communication to transfer the received signals. A transponder is typically composed of: * an input band-limiting device (an input band-pass filter), * an input low-noise amplifier (LNA), designed to amplify the signals received from the Earth station (normally very weak, because of the large distances involved), * a frequency translator (normally composed of an oscillator and a frequency mixer) used to convert the frequency of the received signal to the frequency required for the transmitted signal, * an output band-pass filter, * a power amplifier (this can be a traveling-wave tube or a solid-state amplifier). Most communication satellites are radio relay stations in orbit and carry dozens of transponders, each with a bandwidth of tens of megahertz. Most transponders operate on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Station-keeping
In astrodynamics, orbital station-keeping is keeping a spacecraft at a fixed distance from another spacecraft or celestial body. It requires a series of orbital maneuvers made with thruster burns to keep the active craft in the same orbit as its target. For many low Earth orbit satellites, the effects of non-Keplerian forces, i.e. the deviations of the gravitational force of the Earth from that of a homogeneous sphere, gravitational forces from Sun/Moon, solar radiation pressure and air drag, must be counteracted. The deviation of Earth's gravity field from that of a homogeneous sphere and gravitational forces from the Sun and Moon will in general perturb the orbital plane. For a sun-synchronous orbit, the precession of the orbital plane caused by the oblateness of the Earth is a desirable feature that is part of mission design but the inclination change caused by the gravitational forces of the Sun and Moon is undesirable. For geostationary spacecraft, the inclination change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OKB Fakel
EDB Fakel (Russian ''ОКБ "Факел"'') is a Russian electric propulsion system development company. It is located in Kaliningrad in Kaliningrad Oblast. It was founded in 1955 as a ''Propulsion laboratory'' of the Soviet Academy of Sciences; in 1962 it obtained status of Design Bureau, OKB.Roskosmosbr>information/ref> Overview Fakel specializes in spacecraft attitude control thrusters, ion engines and plasma sources. It is a world leader in the field of Hall thruster development and a leading Russian developer and manufacturer of electric propulsion systems. The company's third-generation electric propulsion system SPT-100 has been certified in accordance with western standards and the company is actively marketing the system to foreign customers. The company has 960 employees. Flight missions Many companies have used Fakel electrically powered spacecraft propulsion systems on their hardware flown in space. Company's hardware were used on SESAT 1, Alphasat, SMART-1, L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrically Powered Spacecraft Propulsion
Spacecraft electric propulsion (or just electric propulsion) is a type of spacecraft propulsion technique that uses electrostatic or electromagnetic fields to accelerate mass to high speed and thus generate thrust to modify the velocity of a spacecraft in orbit. The propulsion system is controlled by power electronics. Electric thrusters typically use much less propellant than chemical rockets because they have a higher exhaust speed (operate at a higher specific impulse) than chemical rockets.Choueiri, Edgar Y. (2009New dawn of electric rocket''Scientific American'' 300, 58–65 Due to limited electric power the thrust is much weaker compared to chemical rockets, but electric propulsion can provide thrust for a longer time. Electric propulsion was first successfully demonstrated by NASA and is now a mature and widely used technology on spacecraft. American and Russian satellites have used electric propulsion for decades. , over 500 spacecraft operated throughout the Sola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
