BSAT-3b

BSAT-3b, is a geostationary communications satellite operated by B-SAT which was designed and manufactured by Lockheed Martin on the A2100 platform. It is stationed on the 110° East orbital slot along its companion BSAT-3a and BSAT-3c from where they provide redundant high definition direct television broadcasting across Japan.[6][7][8]

BSAT-3b
Mission typeCommunication
OperatorB-SAT
COSPAR ID2010-056B[1]
SATCAT no.37207
WebsiteB-SAT Satellite Fleet
Spacecraft properties
SpacecraftBSAT-3b
BusA2100[2]
ManufacturerLockheed Martin
Launch mass2,060 kg (4,540 lb)
Dry mass975 kg (2,150 lb)
Dimensions3.8 m × 1.9 m × 1.9 m (12.5 ft × 6.2 ft × 6.2 ft)[3]
Power3 kW[4]
Start of mission
Launch date21:51, October 28, 2010 (UTC) (2010-10-28T21:51Z)[5]
RocketAriane 5 ECA VA-197
Launch siteGuiana Space Center ELA-3
ContractorArianespace
Orbital parameters
RegimeGEO
Longitude110° East
Transponders
Band8 (plus 4 spares) Ku band
TWTA power130 Watts
 

Satellite description

BSAT-3b was designed and manufactured by Lockheed Martin on the A2100 satellite bus for B-SAT. It had a launch mass of 2,060 kg (4,540 lb), a dry mass of 975 kg (2,150 lb), and a 15-year design life.[3] As most satellites based on the A2100 platform, it uses a 460 N (100 lbf) LEROS-1C LAE for orbit raising.[6]

It measured 3.8 m × 1.9 m × 1.9 m (12.5 ft × 6.2 ft × 6.2 ft) when stowed for launch. Its dual wing solar panels can generate 3 kW of power at the end of its design life, and span 14.65 m (48.1 ft) when fully deployed.[3]

It has a single Ku band payload with 8 active transponders plus four spares with a TWTA output power of 130 Watts.[2]

History

April 15, 2008 Lockheed Martin announced that it had also been awarded the second contract of the B-SAT third generation broadcast satellite fleet for BSAT 3b. It had already produced BSAT-3a, which launched on 2007, and would eventually also produce BSAT-3c. BSAT-3b would be based on the A2100 platform, sport 8 Ku band transponders (plus 4 spares) and have a design life of 15 years. It was going to be located at the 110° East orbital position.[8] It was to be launched aboard an Ariane 5 ECA in the second half of 2010.[9]

On October 26, 2010, Lockheed announced that BSAT-3b was mated to the launcher and ready for its ride to orbit.[10] It launch at 21:51 UTC, of October 28, 2010 aboard an Ariane 5 ECA from Guiana Space Center ELA-3 launch pad. It rode on the lower berth under the SYLDA along Eutelsat W3B.[5][1] The first signals from the satellite were received one hour later, at 22:52 UTC.[11]

On November 4, 2010, Lockheed announced that BSAT-3b had successfully deployed its reflector antennas and solar panels, and also had successfully performed all orbital maneuvers. After some further check outs, it would be put into operative service.[12] It was entered into service on December 8, 2010 after successfully passing the on-orbit deployment and checkout phase.[2][13]

gollark: I'm not really sure what to do about this or if it's much of a problem, but the sentence structure seems kind of simplistic.
gollark: Sure? I'm also not sure about `of the less fortunate`, that's weird grammar.
gollark: For one thing, the intro is a bit confusing and it could be read as "Mark" and "the man" being different.
gollark: Er, can you rotate it so I can read it?
gollark: Not all of them support that, and probably not all devices do.

References
  1. "BSAT 3B". NASA Space Science Data Coordinated Archive. 27 April 2016. Retrieved 2016-08-29.
  2. "放送衛星3機のスペック" [Specifications of the three broadcasting satellites]. Broadcasting Satellite System Corporation. Retrieved 2016-08-29.
  3. "Launch Kit VA197". Arianespace. October 16, 2010. Archived from the original (PDF) on 2010-10-27. Retrieved 2016-08-29.
  4. "Ariane 5 Data relating to flight 197". Arianespace. October 2010. Archived from the original (PDF) on 2010-10-28. Retrieved 2016-09-05.
  5. "BSAT 3B". NASA Space Science Data Coordinated Archive/Orbital Information. 27 April 2016. Retrieved 2016-08-29.
  6. Krebs, Gunter Dirk (2016-04-17). "BSat 3a, 3b". Gunter's Space Page. Retrieved 2016-08-29.
  7. "BSat 3B". Satbeams. Retrieved 2016-08-29.
  8. "B-SAT awards Lockheed Martin contract for BSAT-3b satellite". Icaa.eu. Lockheed Martin Space Systems. April 15, 2008. Archived from the original on 2016-09-05. Retrieved 2016-09-05.
  9. "Arianespace to launch the BSAT-3b satellite for Japan". defense-aerospace.com. Arianespace. April 11, 2008. Archived from the original on 2016-09-05. Retrieved 2016-09-05.
  10. "Lockheed Martin-Built BSAT-3b Satellite Ready For Launch For The Broadcasting Satellite System Corporation Of Japan". Icaa.eu. Lockheed Martin Space Systems. October 26, 2010. Archived from the original on 2016-09-05. Retrieved 2016-09-05.
  11. "Lockheed Martin-Built BSAT-3b Satellite Successfully Launched for the Broadcasting Satellite System Corporation of Japan". Icaa.eu. Lockheed Martin Space Systems. October 28, 2010. Archived from the original on 2016-09-05. Retrieved 2016-09-05.
  12. "All Systems Are Nominal Aboard Lockheed Martin Bsat-3b Satellite Following Oct. 28 Launch". Icaa.eu. Lockheed Martin Space Systems. November 4, 2010. Archived from the original on 2016-09-05. Retrieved 2016-09-05.
  13. "Lockheed Martin-Built BSAT-3b Satellite Begins Service for Broadcasting Satellite System Corporation of Japan". August 12, 2010. Archived from the original on 2016-09-05. Retrieved 2016-08-29.
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