BSAT-3b

BSAT-3b, is a geostationary communications satellite operated by Broadcasting Satellite System Corporation (B-SAT) which was designed and manufactured by Lockheed Martin on the A2100 platform. It is stationed on the 110.0° 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.37206
WebsiteB-SAT Satellite Fleet
Mission duration15 years (planned)
Spacecraft properties
SpacecraftBSAT-3b
BusA2100[2]
ManufacturerLockheed Martin
Launch mass2060 kg
Dry mass975 kg
Dimensions3.8 by 1.9 by 1.9 metres (12.5 ft × 6.2 ft × 6.2 ft)[3]
Power3000 watts[4]
Start of mission
Launch date28 October 2010,
21:51:07 UTC[5]
RocketAriane 5 ECA (VA-197)
Launch siteCentre Spatial Guyanais, ELA-3
ContractorArianespace
Entered service8 December 2010
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude110.0° East
Transponders
Band8 (plus 4 spares) Ku-band
Coverage areaJapan
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 kilograms (4,540 lb), a dry mass of 975 kilograms (2,150 lb), and a 15-year design life.[3] As most satellites based on the A2100 platform, it uses a 460 newtons (100 lbf) LEROS-1C LAE for orbit raising.[6]

It measured 3.8 by 1.9 by 1.9 metres (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 metres (48.1 ft) when fully deployed.[3]

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

History

On 15 April 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 110.0° East orbital position.[8] It was to be launched aboard an Ariane 5 ECA in the second half of 2010.[9]

On 26 October 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, on 28 October 2010 aboard an Ariane 5 ECA from Centre Spatial Guyanais ELA-3 launch pad. It rode on the lower berth under the SYLDA with Eutelsat W3B.[5][1] The first signals from the satellite were received one hour later, at 22:52 UTC.[11]

On 4 November 2010, Lockheed Martin 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 8 December 2010 after successfully passing the on-orbit deployment and checkout phase.[2][13]

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