HS-376

Last updated
Boeing 376
STS-51-D Telesat-1 deployment.jpg
Manufacturer Boeing Satellite Development Center
Country of originUnited States
Applications Communications satellite
Specifications
Spacecraft type Spin-stabilized
Power800 to 2,000  Watts
Production
StatusRetired
On order58
Built58
Launched58
Retired56
Failed2
Maiden launch Anik C1 April 12, 1985
Last launch eBird 1 September 27, 2003
Related spacecraft
Derived from HS-333
Derivatives HS-393
←  HS-333 Boeing 601 →

The Boeing 376 (sometimes referred to as the BSS-376, and previously as the HS-376) is a communications satellite bus introduced in 1978 by Hughes Space and Communications Company. It was a spin-stabilized bus, a successor to Hughes HS-333. [1] [2]

Contents

Design

The satellite bus was designed and manufactured by Hughes. This spin-stabilized platform had two main sections. The spinning section was kept rotating at 50 rpm to maintain attitude, and a despun section was used by the payload to maintain radio coverage. [3] [4]

The spinning section included the apogee kick motor, most of the attitude control, the power subsystem and the command and telemetry subsystems. The despun section contained the communications payload, including the antennas and transponders. [3] [4]

The stock version had a launch mass of 1,100 to 1,450 kg (2,430 to 3,200 lb), a mass of 540 to 790 kg (1,190 to 1,740 lb) after reaching geostationary orbit and an 8 to 10-year design life. When stowed for launch, its dimensions were 2.8 to 3.15 m (9 ft 2 in to 10 ft 4 in) in height and 2.16 m (7 ft 1 in) in diameter. With its solar panels fully extended its height was 6.6 to 8 m (22 to 26 ft). [5] [6] [4]

Its power system generated approximately 1,100 to 1,200  watts of power at beginning of life, thanks to two cylindrical solar panels. The bottom panel was retracted around the body and top panel for launch, and extended downwards for operation. It also had two NiCd batteries for solar eclipses. [5] [6] [4]

Versions

There were four variations of this platform:

Satellites

The HS-376 was a very successful satellite platform with 58 satellites ordered, built and launched. It was also the first satellite to launch from the Space Shuttle. [2]

SatelliteOther namesOperatorModelOrderedLaunchLaunch vehicleLaunch resultMass (kg) at...Remarks
Launch BOL
SBS 1 HS-37619771980-11-15 Delta-3910/PAM-D Success1117540 [6] [10]
SBS 2 HS-37619771981-09-24 Delta-3910/PAM-D Success1117540 [6] [10]
Westar 4 HS-37619801982-02-26 Delta-3910/PAM-D Success1100582
Westar 5 HS-37619821982-06-09 Delta-3910/PAM-D Success1100582
Anik D1 HS-3761982-08-26 Delta-3920/PAM-D Success1140634
Anik C3 HS-37619781982-11-11 Shuttle/PAM-D Success1140563
SBS 3 HS-37619811982-11-11 Shuttle/PAM-D Success1117540 [6] [10]
Anik C2 Nahuel I2HS-37619781983-06-18 Shuttle/PAM-D Success1140563
Palapa B1 Palapa Pacific 1HS-37619801983-06-18 Shuttle/PAM-D Success1200692 [4] [11]
Galaxy 1 HS-3761983-06-28 Delta-3920/PAM-D Success1200709
Telstar 301 Arabsat-1E HS-37619801983-07-28 Delta-3920/PAM-D Success1140653
Galaxy 2 HS-3761983-09-22 Delta-3920/PAM-D Success1200709
Palapa B2 HS-37619801984-02-03 Shuttle/PAM-D PAM ignition failed, satellite recovered1200692Launched along Westar 6. PAM-D failed to ignite, Shuttle recovered the satellite. Was relaunched as Palapa B2R. [4] [11]
Westar 6 HS-3761984-02-03 Shuttle/PAM-D PAM ignition failed, satellite recovered1244582Launched along Palapa B2. PAM-D failed to ignite, Shuttle recovered the satellite. Was relaunched as AsiaSat 1.
SBS 4 HGS 5HS-37619831984-08-30 Shuttle/PAM-D Success1117540 [6] [10]
Telstar 302 HS-37619801984-08-30 Shuttle/PAM-D Success1140653
Galaxy 3 HS-3761984-09-21 Delta-3920/PAM-D Success1200709
Anik D2 Satcom 4R
Arabsat 1D		HS-3761984-11-08 Shuttle/PAM-D Success1140634
Brasilsat-A1 SBTS 1HS-37619821985-02-08 Ariane 3 Success1195—
Anik C1 Nahuel I1
Brasil 1T		HS-37619781985-04-12 Shuttle/PAM-D Success1140563
Morelos 1 HS-37619821985-06-17 Shuttle/PAM-D Success1140647
Telstar 303 HS-37619801985-06-17 Shuttle/PAM-D Success1140653
Aussat A1 Optus A1 HS-37619821985-08-27 Shuttle/PAM-D Success1250654
Aussat A2 Optus A2 HS-37619821985-11-27 Shuttle/PAM-D Success1250654
Morelos 2 HS-37619821985-11-27 Shuttle/PAM-D Success1140647
Brasilsat-A2 SBTS 2HS-37619821986-03-28 Ariane 3 Success1195—
Palapa B2P Palapa B3
Agila 1 		HS-37619841987-03-20 Delta-3920/PAM-D Success1200692 [4] [11]
Aussat A3 Optus A3 HS-37619821987-09-16 Ariane 3 Success1250696
SBS 5 HS-37619831988-09-08 Ariane 3 Success1117540 [6] [10]
Marcopolo 1 Sirius 1
Sirius W 		HS-37619871989-08-27 Delta-4925 Success1250660
AsiaSat 1 HS-3761990-04-07 Long March 3 Success1244582Was Westar 6, but the launch on Space Shuttle failed. It was recovered and launched again as AsiaSat 1.
Palapa B2R NewSat 1 HS-3761990-04-13 Delta-6925-8 Success1200692Was Palapa B2, but the launch on Space Shuttle failed. It was recovered and launched again as Palapa B2R. [4] [11]
Marcopolo 2 Thor 1 HS-37619871990-08-18 Delta-6925-8 Success1250662
Prowler HS-3761990-11-15 Shuttle/PAM-D Success——
Galaxy 5 HS-37619891992-03-14 Atlas I Success1390788
Palapa B4 HS-3761992-05-14 Delta-7925-8 Success1200692 [4]
Galaxy 1R HS-37619891992-08-22 Atlas I Failure1390788Launch failure
Galaxy 6 Westar 6S HS-37619831992-10-12 Ariane-44L Success1390709
Thaicom 1 Thaicom 1A HS-376L19911993-12-18 Ariane-44L Success1080629 [5]
Galaxy 1R2 HS-37619921994-02-19 Delta-7925-8 Success1390788
APSTAR-1 ZX-5E HS-37619921994-07-21 Long March 3 Success1400726
Brasilsat B1 HS-376W19901994-08-10 Ariane-44LP Success17571052 [8] [9]
Thaicom 2 HS-376L19911994-10-07 Ariane-44L Success1080629 [5]
Brasilsat B2 HS-376W19901995-03-28 Ariane-44LP Success17571052 [8] [9]
MEASAT-1 AFRICASAT-1 HS-37619941996-01-12 Ariane-44L Success1450886
Galaxy 9 HS-37619951996-05-24 Delta-7925 Success1390788
APSTAR-1A ZX-5D HS-37619951996-07-03 Long March 3 Success1400726
ZX 7 Chinasat-7
HGS 2		HS-37619951996-08-18 Long March 3 Failure1384734Launch failure
MEASAT-2 AFRICASAT-2 HS-37619941996-11-13 Ariane-44L Success1450886
BSAT-1a HS-37619931997-04-16 Ariane-44LP Success1236723 [3]
Thor 2 HS-376HP19951997-05-20 Delta-7925 Success1467853
Brasilsat B3 HS-376W19951998-02-04 Ariane-44LP Success17571052 [8] [9]
BSAT-1b HS-37619931998-04-28 Ariane-44P Success1236723 [3]
Thor 3 HS-376HP19971998-06-10 Delta-7925 Success1451853
Sirius 3 HS-376HP19971998-10-05 Ariane-44L Success1465815
Bonum 1 HS-376HP19971998-11-22 Delta-7925 Success1425793
Brasilsat B4 HS-376W19982000-08-17 Ariane-44LP Success17571052 [8] [9]
Astra 2D HS-376HP19992000-12-20 Ariane 5G Success1445824
Astra 3A HS-376HP20002002-03-29 Ariane-44L Success1514908
eBird 1 Eurobird 3
Eutelsat 33A
Eutelsat 31A 		HS-376HP20002003-09-27 Ariane 5G Success1530895

See also

References

  1. ↑ "Boeing 376". Boeing Satellite Development Center. Archived from the original on 2010-03-05. Retrieved 2016-08-16.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  2. 1 2 3 4 5 6 Krebs, Gunter Dirk (2016-04-21). "Hughes / Boeing: HS-376 / BSS-376". Gunter's Space Page. Retrieved 2016-08-16.
  3. 1 2 3 4 "BSAT-1". Boeing Satellite Development Center. Archived from the original on 2010-02-07. Retrieved 2016-08-18.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  4. 1 2 3 4 5 6 7 8 9 "Palapa-B". Boeing Satellite Development Center. Archived from the original on 2010-02-07. Retrieved 2016-08-18.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  5. 1 2 3 4 5 "THAICOM". Boeing Satellite Development Center. Archived from the original on 2010-02-07. Retrieved 2016-08-18.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  6. 1 2 3 4 5 6 7 "SBS". Boeing Satellite Development Center. Archived from the original on 2010-02-07. Retrieved 2016-08-18.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  7. ↑ Krebs, Gunter Dirk (2016-08-08). "Thaicom 1, 2". Gunter's Space Page. Retrieved 2016-08-18.
  8. 1 2 3 4 5 "Brasilsat B". Boeing Satellite Development Center. Archived from the original on 2010-02-07. Retrieved 2016-08-18.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  9. 1 2 3 4 5 Krebs, Gunter Dirk (2016-04-17). "Brasilsat B 1, 2, 3, 4". Gunter's Space Page. Retrieved 2016-08-18.
  10. 1 2 3 4 5 Krebs, Gunter Dirk (2016-04-17). "SBS 1, 2, 3, 4, 5 / HGS 5". Gunter's Space Page. Retrieved 2016-08-18.
  11. 1 2 3 4 Krebs, Gunter Dirk (2016-04-17). "Palapa B1, B2, B2P, B2R, B4 / Palapa Pacific / Agila 1 / NewSat 1". Gunter's Space Page. Retrieved 2016-08-18.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.