Credit: Hughes. 32,046 bytes. 338 x 450 pixels.
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| HS 376 Cutaway - Credit: Hughes. 32,046 bytes. 338 x 450 pixels. |
Mass 654 kg at beginning-of-life in geosynchronous orbit. Spin stabilized at 50 rpm by 4 hydrazine thrusters with 136 kg propellant. Star 30 apogee kick motor. Solar cells mounted on outside of cylindrical satellite body provide 990 W of power and recharge two NiCd batteries. 24 + 6 backup 9 W transmission beams.
Total Mass: 2,800 kg.
Satellite Business Systems. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
TV, telephone. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Voice, TV coverage for Alaska, Hawaii, Puerto Rico, Virgin Islands. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Telecommunications. Operating entity Telesat Canada. Longitude 104.5W. Anik D-1 Transmit frequencies (MHz): 3720, 3740, 3760, 3780, 3800, 3820, 3840, 3860, 3880, 3900, 3920, 3940, 3960, 3980, 4000, 4020, 4040, 4060, 4080, 4100, 4120, 4140, 4160, 4180. Power 8.9 watts on each frequency.
Deployed from STS-5 11/11/82. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Deployed by STS-7 6/19/83. Telecommunications. Operating entity TELESAT Canada. Longitude 110 W. Transmit power 11.2 W on each frequency. Frequencies 11730, 11743, 11791, 11804, 11852, 11865, 11913, 11926, 11974, 11987, 12035, 12048, 12096, 12109, 12157, 12170 MHz.
TV. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Deployed from STS 41B 2/4/84; failed to reach proper orbit; recovered by STS-51A.
Released from STS 41D 8/31/84; 101 deg W. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Geostationary at 3.5 deg W. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).
Released 11/9/84 from STS 51A; 82 deg W. Telecommunications. Longitude 111.5 deg W. Operating entity Telesat Canada. Transmitter power 8.9 watts at each frequency. Frequencies 3720 to 4180 MHz spaced by 20 MHz.
Stationed at 65 deg W. Brazilsat 1 & 2 provide telecommunications services to Brazil. 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). Brazilsat 1 & 2 were the first two elements of Brazil's national Sistema Barasilero de Telecommunicacoes por Satelite (SBTS) network. Spacecraft: Based on Hughes HS-376, single antenna on despun platform, spin stabilised, hydrazine thrusters, body mounted solar cells provide 982 W BOL. 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. B1-B2 have dedicated transponders for government use.
Released by STS 51D 4/13/85; 107.5 deg W. Telecommunications. Operating entity TELESAT Canada. Longitude 107.5 W. Transmit power 11.2 W on each frequency. Frequencies 11730, 11743, 11791, 11804, 11852, 11865, 11913, 11926, 11974, 11987, 12035, 12048, 12096, 12109, 12157, 121 70 MHz.
Released by STS 51G 6/19/85; stationed at 76 deg W.
Released by STS 51I 8/27/85. Aussat A1 was decommissioned in early 1993 at the ned of its nominal life. It is currently in a non-synchronous graveyard orbit.. It spent its active life at 160 deg. E.
Released by STS 61B 11/28/85; 156 deg E.
Stationed at 105 deg W. Brazilsat 1 & 2 provide telecommunications services to Brazil. 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). Brazilsat 1 & 2 were the first two elements of Brazil's national Sistema Barasilero de Telecommunicacoes por Satelite (SBTS) network. Spacecraft: Based on Hughes HS-376, single antenna on despun platform, spin stabilised, hydrazine thrusters, body mounted solar cells provide 982 W BOL. 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. B1-B2 have dedicated transponders for government use.
Stationed at 113 deg W.
Australian domestic communications; 164 deg E. Communication satellite. Launching states: Australia and France. Longitude 164 deg E +/- 0.5. (orbit given is geocentric 42164 km, which corresponds to altitude 35787 km). The satellite mass was 655 kg at beginning of life for an Ariane mission only on-station after the apogee motor had fired and station acquisition fuel was expended.
Stationed at 122 deg W.
British DBS; 31 deg W. Direct broadcasting system. Expected operational life, 10 years. Owner/operator: British Satellite Broadcasting Ltd, The Marcopolo Building, Chelsea Bridge, Queenstown Rd, London SW8 4NQ.
First commercial Chinese launch; Stationed at 105 deg E; formerly Westar 6 (retrieved by STS-51A and refurbished). Fixed-satellite telecommunication services and transmission of television signals. Operational life about 10 years. Orbital position 105.5E. Owner/operator: Asia Satellite Telecommunications Co, Ltd. 23-24/F, East Exchange Tower, 38-40 Leighton Rd, Hong K ong. Telex 68345 ASAT HX Fax 852 576 4111.
Refurbished Palapa B2 retrieved by STS-51A; 107.7 deg E. Communication services for Indonesia, the Association of South-East Asian Nations (ASEAN), and Papua New Guinea. Launch time 2227:59.719 Z. Launch complex 17, ETR.
UK DBS; 31 deg W. Direct broadcasting system. Expected operational life 12.5 yr. Owner/operator: British Sky Broadcasting Ltd, 6 Centaurs Business Park, Grant Way, Isleworth, Middlesex TW7 5QD. Sold on-orbit in 1992 to Telenor Norway and redesignated Thor 1.
Geostationary at 99 deg W. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).
Geostationary at 125 deg W. Spent boosters, spent maneuvering stages, shrouds and other non-functional objects (US Cat D). Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option.
Stationed at 118 deg E.
Stationed at 133 deg W; replaced Galaxy 1. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).
Asia-Pacific communications. Stationed at 137.97 deg E.
10 C-band, 2 Ku-band transponders. Stationed at 78.42 deg E.
Geostationary at 91.4E.
24 C-band transponders; Geostationary at 133.9E.
Geostationary at 148.0E.
Geosynchronous. Stationed over 110.0E
Geosynchronous. Stationed over 0.8W
Geostationary at 109.9 degrees E.
The spacecraft was delivered to its final orbit in a complex series of five engine burns by three rocket stages. The Delta's second stage demonstrated its restart capability in 4 burns: Burn 1 placed the rocket and payload into a low circular orbit; Burn 2 raised the apogee to 1400 km; Burn 3 circularised the orbit at 1400 km. The second stage then separated, and Burn 4 lowered the spent stage's perigee to a low altitude to ensure the stage would decay quickly and not add to the space junk already on orbit. Stage 3 burned once to place the payload and its kick motor into a high 1400 km perigee geosynchronous transfer orbit. The Stage 4 Star 30 apogee kick motor circularised the spacecraft's orbit at geostationary altitude. Geostationary at 0.8 degrees W.
Geostationary at 23.5 degrees E.
BONUM-1 provided domestic Russian television service for Media Most, a Moscow media enterprise, broadcasting 50 channels to western Russia from a geostationary orbit at 36 degrees E. Mass was 1426 kg at launch, 800 kg of that propellant. BONUM-1 carried 8 Ku-band transponders. The Delta upper stage raised the initial 157 km x 189 km at 29.2 degree parking orbit to 159 km x 1304 km and then 1228 km x 1683 km at 26.7 degrees. A Thiokol Star 48B solid third stage boosted BONUM-1 to a 1285 x 36703 km x 19.5 degree geostationary transfer orbit, with the Thiokol Star 30 apogee kick motor placing the satellite in its final geostationary orbit. After separation of the spacecraft, the Delta made a final depletion burn to lower its orbit to 274 km x 1552 km x 25.6 degree to ensure it would quickly decay and burn up in the atmosphere. Geostationary at 35.9 degrees E.