In 1985 the ESA decided to develop the more powerful Ariane 5 launcher with a totally new design based on a cryogenically fueled first stage, flanked by two large solid-fuel boosters, and having a second stage fueled by monomethylhydrazine with nitrogen peroxide as the oxidizer. Commsat technology demonstration;19 deg W. Olympus-1 is a multi-payload communications satellite for direct TV broadcast in the bands of the 1977 Geneva Plan of the International Telecommunications Union (ITU) (including a national beam to Italy) plus communication transponde rs in the 14/12 GHz, 2nd 30/20 GHz bands. Positioned in geosynchronous orbit at 65 deg W in 1985-1994; 63 deg W in 1994-1996; 79 deg W in 1996-1998; 144 deg W in 1998-1999 As of 5 September 2001 located at 143.96 deg W drifting at 0.005 deg E per day. This page was last edited on 15 October 2020, at 14:02. As of 2007 Mar 11 located at 120.92E drifting at 5.702W degrees per day. Stationed at 65 deg W. Brazilsat 1 & 2 provide telecommunications services to Brazil. Eutelsat I F5 - . French domestic communications; 5 deg E. Communications satellite. https://www.britannica.com/technology/Ariane-European-launch-vehicles, European Space Agency - The origins of Ariane. The Ariane 5 has achieved 89 percent reliability. John M. Logsdon is Professor Emeritus of Political Science and International Affairs at George Washington University’s Elliott School of International Affairs. European communications; 10 deg E. Positioned in geosynchronous orbit at 10 deg E in 1987-1988; 13 deg E in 1989-1991; 7 deg E in 1991-1993; 25 deg E in 1993-1999 As of 2 September 2001 located at 33.14 deg E drifting at 0.002 deg E per day. Ariane 1 was 50 metres (164 feet) tall and had a thrust at liftoff of 2,400 kilonewtons (550,000 pounds), which allowed it to launch an 1,850-kg (4,070-pound) satellite into geostationary orbit. The first two stages of Ariane 2–4 were fueled by a mixture of UMDH and hydrazine, with nitrogen peroxide as an oxidizer; the third stage used cryogenic fuel. 1988-1-C (Telecom 1C). Positioned in geosynchronous orbit at 103 deg W in 1985-1996; 105 deg W in 1997-1999 As of 5 September 2001 located at 105.33 deg W drifting at 0.011 deg W per day. The name comes from the French spelling of the mythological character Ariadne. B1-B2 have dedicated transponders for government use. Positioned in geosynchronous orbit at 69 deg W in 1984-1997; 115 deg E in 1997-1998 As of 5 September 2001 located at 65.20 deg E drifting at 1.887 deg W per day. Stationed at 103 deg W. Ku band communications satellite. Payload: 2,700 kg (5,900 lb). The amount of light emitted by an object in a unit of time is known as: Get exclusive access to content from our 1768 First Edition with your subscription. There are two versions of the upper stage, one hypergolic and restartable with a single Aestus engine  and the other with a HM7B cryogenic engine burning LH2/LOX. However, after a launcher exploded in May 1980, the fuel mixture was changed to the more stable mixture of UMDH and hydrazine. Geostationary orbit position 10 +/- 0.1; afterwards 7 +/- 0.1 deg E. EUTELSAT 2 is a regional geostationary satellite for European countries. Stationed at 68 deg W. C, Ku band communications satellite. These layouts are designated by suffixes after the generation number. ESA designator ESA/88/03. France first proposed the Ariane project and it was officially agreed upon at the end of 1973 after discussions between France, Germany and the UK. Brazilsat 1 & 2 were the first two elements of Brazil's national Sistema Barasilero de Telecommunicacoes por Satelite (SBTS) network. Since then, Ariane 5 has launched only unmanned satellites. Improved versions of Ariane were developed during the 1980s; the first Ariane 3 vehicle was launched in August 1984, but the first Ariane 2 (which had the same launch vehicle design as the Ariane 3 but without the two solid-fuel strap-on boosters) debuted in May 1986. First Launch: 1984-08-04. New position: 345 deg E. Positioned in geosynchronous orbit at 177 deg E in 1984-1986; 26 deg W in 1986-1990; 55 deg W in 1990-1992; 15 deg W in 1992-1997; 26 deg W in 1997-on. Subtopics. With a much more powerful upper stage than previous Ariane models, the Ariane 5 is capable of carrying a 10,500-kg (23,100-pound) satellite to geostationary orbit. The first four generations of Ariane shared the same basic design but achieved increased performance and flexibility through modifications of that design; by the end of its 15-year-long career, Ariane 4 had achieved over 97 percent reliability. Last Launch: 1989-07-12. Since the Ariane 4 was retired from service in 2003, all ESA launches have used Ariane 5, and there has been a continuing effort to lower its costs and improve its reliability and performance, particularly its ability to launch two communications satellites to geostationary orbit. Canada's Spar Aerospace was awarded a $125 million contract to build, under license, two satellites based on Hughes' HS-376 design (similar to Anik D). Number: 11 . Launch Vehicles: Ariane 2/3, Ariane 3, Ariane 44LP, Ariane 42P, Ariane 44P, Advanced Scout, Ariane 42Pp, Ariane 44LP-3. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. The project was Western Europe's second attempt to develop its own launcher following the unsuccessful Europa project. Positioned in geosynchronous orbit at 93 deg E in 1988-1989 As of 4 September 2001 located at 58.51 deg E drifting at 0.073 deg E per day. Registration France 1984-2.B (Telecom 1A) 1985-2.B (Telecom 1B). Ariane 2–4 were enhancements of the basic vehicle. On 4 May 2007, an Ariane 5-ECA rocket set a new commercial payload record, lifting two satellites with a combined mass of 9.4 tonnes. Payload: 24 C-band transponders with 6 spares, 10 W TWTA, EIRP >34 dBW over most of Brazilian territory Financial/Operational: Contract issued in 1990 for 2 units HS-376W. Stationed at 7 deg E. Launch time 1333 UT. The first launch of the Ariane 1 vehicle took place in December 1979. The name comes from the French spelling of the mythological character Ariadne. 1988-1-C (Telecom 1C). This is a particular advantage for revenue-producing commercial satellites, which can get an extra year or more of life from being launched near the Equator. Ariane 1 was a three-stage launcher, derived from missile technology. Announcing our NEW encyclopedia for Kids! Positioned in geosynchronous orbit at 10 deg E in 1989-1991; 21 deg E in 1991-1998; 12 deg W in 1998-1999 As of 4 September 2001 located at 48.15 deg E drifting at 7.596 deg W per day. The project was Western Europe's second attempt to develop its own launcher following the unsuccessful Europaproject.
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