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Aviation History
1985
1985 - 0103.PDF
INTERNATIONAL SATELLITE DIRECTORY Orbit Geostationary, between 15°E and 30°E Launch Arabsat 1 Feb 1985 Ariane 2 May 1985 Shuttle Stabilisation 3-axis Power (end of life) 1 • 3kw Weight (at launch) 1,195kg (Ariane) Design life 7 years Cost $134m (1981)—2 flight + 1 spare Remarks Aerospatiale leads a team comprising Ford Aerospace & Com munications, Selenia, MBB, AEG- Telefunken, Bertin, and McDonnell Douglas (PAM-D perigee kick motor for shuttle launch). ASC ASC is American Satellite's first com munications satellite, although the company has a 20 per cent share in West ern Union's Westar network. American Satellite, a partnership between Continental Telecom and Fairchild Industries, provides voice, data, facsimile, and video conferencing communications across the USA. Payload 18 6/4GHz transponders 6 12/14GHz transponders Owner American Satellite Company Manufacturer RCA Astro-Electronics Orbit Geostationary Launch ASC-1 Aug 1985 Shuttle/81°W ASC-2 Aug 1986 Shuttle/128°W (ASC-3 Nov 1987 Shuttle reservation) Stabilisation 3-axis Weight (at launch) 1,250kg Design life 10 years Cost $100m+ (1983)—2 craft plus options Remarks Satellite bus derived from Spacenet. Encrypted command signals for the first time in a commercial craft. Aussat Australia's first domestic communi cations satellite. Aussat has two main functions—direct broadcast of TV and radio, and telecommunications relay. The operational network will be two satellites with an in-orbit spare. Payload 15 14/12GHz transponders (4 at 30W for DBS) Owner Aussat Pty Manufacturer Hughes Aircraft Orbit Geostationary Launch/location Aussat 1 Aug 1985 Shuttle/156°E 2 Nov 1985 Shuttle/164 °E 3 Jun 1986 Ariane/160°E Stabilisation Spin Power (start of life) lkW Weight (in orbit) 650kg (Shuttle launch) 655kg (Ariane launch) Design life 7 years minimum Cost $166m (1982)—3 craft, plus 2 Shuttle launches and ground control Remarks Hughes HS376 bus. The dual- surface, dual-polarised, three-reflector antenna produces seven transmit beams-five spot beams for homestead and community broadcasting, including one targeted on Papua New Guinea, and two FLIGHT International, 12 January 198:5 national beams providing continental coverage. Brasilsat Brasilsat, or SBTS, are Brazil's first communications satellites. Embratel, Brazil's telecommunications organisation, plans to use the craft for domestic tele vision, telephone, telex, and data links. Two satellites have been ordered, with two more on option. Payload 24 6/4GHz transponders Owner Embratel, Brazil Manufacturer Spar Aerospace Orbit Geostationary—60-70°W Launch SBTS 1 Jan 1985 Ariane 2 Aug 1985 or Dec 1985/Jan 1986 Ariane Stabilisation Spin Power 0-8kW Weight (at launch) cl,200kg Design life 8 years Cost $125m (1982)—2 craft plus ground control Remarks Hughes HS376 bus, derived from Anik D, built under licence by Spar Aerospace and the first communi cations satellites to be exported by Canada. Comstar This series of four US domestic com munications satellites, whose capacity is leased by American Telephone & Tele graph, is being replaced by AT&T's own Telestar 3 craft. Payload 24 6/4GHz transponders Owner Comsat General Corporation Manufacturer Hughes Aircraft Orbit Geostationary Launch/location/status Dl June 1976 Atlas-Centaur retired D2 Jul 1976 Atlas-Centaur/co-located at 284°E D3 Jul 1978 Atlas-Centaur/co-located at 284°E D4 Feb 1981 Atlas-Centaur/233°E Stabilisation Spin Power (end of life) 0-6kW Weight (at launch) 1, 520kg Design life 7 years Remarks Similar to Intelsat IVA. BS-2 Also known as Yuri 2, BS-2 is Japan's first operational direct-broadcast satellite, bringing television to Japan's islands and mountainous regions. The operational network comprises two co-located satellites. A third generation, BS-3, is planned for launch in 1988. Payload 2 14/12GHz 100W transponders (plus 1 redundant transponder) Owner Nasda Manufacturer Toshiba/General Electric Orbit Geostationary—co-located at 110°E Launch BS-2a Jan 1984 N-II BS-2b mid-1985 N-II Stabilisation 3-axis Power (end of life) 0-87kW Weight (at launch) 675kg Design life 5 years Remarks Toshiba is prime contractor; General Electric assembles the spacecraft. An experimental craft, BSE (also known as Yuri), was launched in April 1978 to test TV relay. Aerospatiale is building two Arabsat communications satellites for launch in 1985 iWlfjM; rpi^PMPB*tiswi WiL BHHHBflBBtfl * ii&iMWHW SMIM^ 31
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