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Star One (satellite Operator)
Embratel Star One is a Brazilian communication satellite company. It is a subsidiary of Embratel. History Embratel Star One was created in December 2000, as an arm of Embratel in the area of operation and administration of satellites. Satellite fleet Embratel Star One own a small fleet of satellites. * Star One C1 was launched atop an Ariane 5 ECA rocket at 22:06 UTC on 14 November 2007. This launch had previously been delayed from 9 November 2007 due to a problem with the launch vehicle, and then from 12 November 2007 due to a problem with the launch pad. Star One C1 was built by Alcatel Alenia Space based on a Spacebus 3000 B3 satellite bus. It has 28 C-band transponders, 16 Ku-band transponders and one X-band transponder, and weighed about at launch. * Star One C2, the second spacecraft, was launched at 22:17 UTC on 18 April 2008, also aboard an Ariane 5 ECA. * Star One C3 Star One C3 is a communications satellite operated by Star One, a subsidiary of Embratel. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rio De Janeiro
Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a beta global city, Rio de Janeiro is the sixth-most populous city in the Americas. Part of the city has been designated as a World Heritage Site, named "Rio de Janeiro: Carioca Landscapes between the Mountain and the Sea", on 1 July 2012 as a Cultural Landscape. Founded in 1565 by the Portuguese, the city was initially the seat of the Captaincy of Rio de Janeiro, a domain of the Portuguese Empire. In 1763, it became the capital of the State of Brazil, a state of the Portuguese Empire. In 1808, when the Portuguese Royal Court moved to Brazil, Rio de Janeiro became the seat of the court of Queen Maria I of Portugal. She subsequently, under the leadership of her son the prince regent João VI of Portugal, raised Brazil to the dignity of a k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ku Band
The Ku band () is the portion of the electromagnetic spectrum in the microwave range of frequencies from 12 to 18 gigahertz (GHz). The symbol is short for "K-under" (originally german: Kurz-unten), because it is the lower part of the original NATO K band, which was split into three bands (Ku, K, and Ka) because of the presence of the atmospheric water vapor resonance peak at 22.24 GHz, (1.35 cm) which made the center unusable for long range transmission. In radar applications, it ranges from 12 to 18 GHz according to the formal definition of radar frequency band nomenclature in IEEE Standard 521–2002. Ku band is primarily used for satellite communications, most notably the downlink used by direct broadcast satellites to broadcast satellite television, and for specific applications such as NASA's Tracking Data Relay Satellite used for International Space Station (ISS) communications and SpaceX Starlink satellites. Ku band satellites are also used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star One B4
Star One B4, originally designated Brasilsat B4, is a Brazilian communications satellite which is operated by Star One. It was constructed by the Hughes Space and Communications Company, and is based on the HS-376W satellite bus. It was the penultimate HS-376, and final HS-376W to be launched. Its launch was contracted by Arianespace, using an Ariane 4 44LP-3 carrier rocket. The launch occurred at 23:16 GMT on 17 August 2000, from the ELA-2 launch pad at the Guiana Space Centre. The Nilesat 102 satellite was launched on the same rocket. It was originally built and launched as Brasilsat B4 for Embratel, and was later transferred to Embratel's subsidiary Star One and renamed. Following its launch it raised itself into geostationary orbit by means of its onboard R-4D apogee motor, and was positioned at 75° West for on-orbit testing. This was completed in September 2000, and it was moved to 92° West, arriving in October. It remained at that position until January 2007 when it was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brasilsat B3
Brasilsat B3 is a Brazilian communications satellite. It was launched on 4 February 1998 by an Ariane 44LP carrier rocket, as part of a dual-payload launch with Inmarsat-3 F5. It was built by Hughes Aircraft, based on the HS-376 satellite bus. It operates by Star One, a subsidiary of Embratel.Kreb's, GunteBrasilsat B 1, 2, 3, 4 ''Gunter's Space Page''. Retrieved 2016-12-09. Objectives The Brasilsat B3 was launched to meet the great demand of the Brazilian market and to bring satellite communication to some cities in the Amazon Region, which still did not have access to satellite services; these locations were for the first time connected to Brazil and the world. In addition, the B3 unveiled the Brasilsat B2, which has now been used in open or pay-TV broadcasts, telephony services and data transmission. History Brasilsat is the name of a group of Brazilian satellites destined to provide communications via satellites, mainly to Brazil. In February 1998, the Brasilsat B3 satell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brasilsat B2
Brasilsat B2 is a Brazilian communications satellite launched on 28 March 1995, at 23:14:19 UTC, by an Ariane 44LP H10+ launch vehicle at Kourou in French Guiana. History The Boeing Company contracted the acquisition of three satellites from Hughes Electronics Corporation. As part of the contract, Hughes would divide the work with Promon Engenharia SA of São Paulo. Brasilsat B1 and B2 were tested by the National Institute for Space Research (INPE) of São José dos Campos, Brasilsat B3 and B4 were tested in the Hughes laboratories. The contract also included renovation of sensor equipment and telemetry, provided by Guaratiba Center for Satellite Signaling, located in Rio de Janeiro, as well as automation and installation of security equipment in the Tanguá Control Station. Current status In January 2008, Brasilsat B2 was moved from its former orbital position at 65° West to 92° West. Brasilsat B2 is now in inclined orbit at 63° West. Of the four Brasilsat satellite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane 4
The Ariane 4 was a European expendable space launch system, developed by the ''Centre national d'études spatiales'' (CNES), the French space agency, for the European Space Agency (ESA). It was manufactured by ArianeGroup and marketed by Arianespace. Since its first flight on 15 June 1988 until the final flight on 15 February 2003, it attained 113 successful launches out of 116 total launches. In 1982, the Ariane 4 program was approved by ESA. Drawing heavily upon the preceding Ariane 3, it was designed to provide a launcher capable of delivering heavier payloads and at a lower cost per kilogram than the earlier members of the Ariane family. The Ariane 4 was principally an evolution of the existing technologies used, as opposed to being revolutionary in its design ethos; this approach quickly gained the backing of most ESA members, who funded and participated in its development and operation. Capable of being equipped with a wide variety of strap-on boosters, the Ariane 4 gaine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brasilsat B1
Brasilsat B1 is a Brazilian communications satellite launched on August 10, 1994, by an Ariane rocket model 44LP at Guiana Space Centre which is located in Kourou, French Guiana. History It was constructed by the United States and Brazil and is classified as a second generation satellite. It is larger and more powerful than the previous generation of satellites. The Boeing Company (which chose to expand its presence in another aerospace field of satellite communications by purchasing Hughes Electronics Corporation, the builder of Brasilsat B1 and B2) contracted the acquisition of three satellites from Hughes. As part of the contract, Hughes would divide the work with Promon Engenharia SA of São Paulo. Brasilsat B1 and B2 were tested by the Institute of Space Research - INPE of São José dos Campos, Brasilsat B3 and B4 were tested in the Hughes laboratories. The contract also included renovation of sensor equipment and telemetry, provided by Guaratiba Center for Satellite Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brasilsat-A2
Brasilsat A2 was a Brazilian geostationary communication satellite belonging to the Brasilsat family. It was built by Spar Aerospace in partnership with Hughes. For most of its useful life it was located in the orbital position of 70 degrees west longitude and was operated by Star One, a subsidiary company of Embratel. The satellite was based on the platform HS-376 and its life expectancy was 8 years. The same was out of commission in February 2004 and was transferred to the graveyard orbit. 34 dBW for most of the Brazilian territory. History In the 1980s, Brazil needed its own satellites to exempt foreigners. As a result of this effort, the Brazilian company Embratel contracted in August 1982 the Canadian Spar Aerospace, Ltd., in partnership with American Hughes, to build its series of "Brasilsat A" satellites, the series consisted of two satellites, the Brasilsat-A1 and the Brasilsat A2. Built by Spar Aerospace, which received US$ 125 million to build under license from Hugh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariane 3
Ariane 3 was a European expendable carrier rocket, which was used for eleven launches between 1984 and 1989. It was a member of the Ariane family of rockets. The principal manufacturer for the Ariane 3 was Aérospatiale, while the lead agency for its development was the Centre National d'Etudes Spatiales (CNES). Development of the Ariane 3 was authorised in July 1979, months prior to the Ariane 1's first flight. Drawing heavily upon both the design and infrastructure of the Ariane 1, the new launcher was concurrently developed alongside the Ariane 2, with which it shared much of its design. It represented an advancement of the Ariane 1 rather than a replacement, but was capable of lifting even heavier payloads into Geostationary transfer orbit (GTO) as well as launching two satellites via one launch. Developed largely within a two year window, the Ariane 3 performed its maiden flight on 4 August 1984, actually flying in advance of its Ariane 2 sibling. During its brief service l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hughes Space And Communications
The Hughes Aircraft Company was a major American aerospace and defense contractor founded on February 14, 1934 by Howard Hughes in Glendale, California, as a division of Hughes Tool Company. The company was known for producing, among other products, the Hughes H-4 Hercules ''Spruce Goose'' aircraft, the atmospheric entry probe carried by the ''Galileo'' spacecraft, and the AIM-4 Falcon guided missile. Hughes Aircraft was founded to construct Hughes' H-1 Racer world speed record aircraft, and it later modified aircraft for his transcontinental and global circumnavigation speed record flights. The company relocated to Culver City, California, in 1940 and began manufacturing aircraft parts as a subcontractor. Hughes attempted to mold it into a major military aircraft manufacturer during World War II; however, its initial military projects ended in failure, with millions of dollars in U.S. government funds expended but only three aircraft actually built, resulting in a highly pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spar Aerospace
SPAR Aerospace was a Canadian aerospace company. It produced equipment for the Canadian Space Agency to be used in cooperation with NASA's Space Shuttle program, most notably the Canadarm, a remote manipulator system. The company went through a series of changes through mergers and acquisition activities, and is now part of MDA. History The company was originally formed in 1967 in Brampton, Ontario through a management buyout of de Havilland Canada’s Special Products division and Avro Canada's Applied Research unit. This provided the name Special Products/Applied Research, or SPAR for short. Special Products was best known for the construction of the Alouette 1 satellite, which made Canada the fourth spacefaring nation. The company was initially involved in spacecraft applications. Larry Clarke led the formation of the company and was its first president. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brasilsat A1
Brasilsat A1 was a Brazilian communications satellite which was operated by Embratel. It was constructed by the Spar Aerospace, and is based on the HS-376 satellite bus. The Brasilsat A1 was off duty in March 2002 and was transferred to the graveyard orbit. Specifications The satellite had the shape of a cylinder, where at its top was located a directional antenna that opened after the launching of the satellite. The satellite had a mass in orbit of 671 kg, had a rotation stabilized between 50 and 55 rpm, its propellers used as a propellant 136 kg of hydrazine and was powered by solar cells that supplied 982 Watts at the beginning of its phase of operation, using two NiCd batteries as power reserve. It carried 24 C-band transmitters with six spare transmitters. They provided an effective incident radiated power (EIRP) of 34 dBW for most of the Brazilian territory. * Lead contractor: Spar Aerospace * Model used: HS-376 * Mass at launch: 1,195 kg * Mass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
