SSL 1300
The SSL 1300, previously the LS-1300 and the FS-1300, is a satellite bus produced by SSL (company). Total broadcast power ranges from 5 to 25 kW, and the platform can accommodate from 12 to 150 transponders. The SSL 1300 is a modular platform and SSL no longer reports designators for sub-versions, such as: 1300E, 1300HL, 1300S, 1300X.[2]
First available in the late 1980s, the SSL 1300 platform underwent revision multiple times over its design life, all the while remaining a popular communications platform.[3] The earliest models provided 5,000 RF watts of transmitter power, weighed 5,500 kg, and required a 4-meter diameter launch fairing. Newer models provide double that, approximately 10,000 RF watts of transmitter power, weigh 6,700 kg, and require a 5-meter diameter launch fairing.[4]
SSL stated that they would use electric propulsion for North-South station keeping for the first time on the MBSat in 2004. The subsystem was supplied by International Space Technologies Inc and used Fakel's Hall thrusters and American and European propellant supply and electronics.[5] According to Moog-ISP, the SSL 1300 platform uses its bipropellant thrusters.[6]
In September 2015 SSL announced that it had delivered 100 satellites based on the SSL 1300 platform. There are more SSL 1300's currently providing service on orbit than any other model communications satellite.[7]
SSL 1300 Firsts
Over the last 25 years the SSL 1300 was the first platform to incorporate many innovations.
- It was the first satellite to use a 100-volt bus and Direct Radiating Collector (DRC) amplifiers, providing the higher power needed for direct-to-home television.[7]
- It was the first true high-throughput satellite, an advance which now enables millions of people around the world to have access to high speed broadband.[7]
- It was the first to reach 20-kW of power, which enables satellite broadcast of today’s HD and UltraHD television.[7]
- It was the first satellite to provide two-way ground-based beam forming, which increases a satellite’s flexibility to meet changing business requirements.[7]
Other advances:
- The 1300 was one of the first platforms to use shaped antenna reflectors, which enable precisely defined coverage areas.[7]
- The 1300 was the first Western satellite to use electric propulsion, which reduces mass allowing for more payload power or a less costly launch. Today there are 18 1300s with electric propulsion on orbit.[7]
- The 1300 was one of the first platforms to incorporate lithium-ion batteries, which have 50 percent less mass than the nickel-hydrogen batteries they replaced and helped to enable higher power satellites.[7]
- The world’s two highest capacity broadband satellites currently providing service are built on the 1300 platform.[7]
Deployed units
Western Hemisphere
| Location | Satellite | Source | Operator | Type | Coverage | Launch date/rocket (GMT) | All locations | Remarks | As of |
|---|---|---|---|---|---|---|---|---|---|
| 129.0°W | Galaxy-27 | US | Intelsat | Television broadcasting & Satellite Internet Access | 25 September 1999, Ariane 44LP | Formerly known as IA-7 and Telstar-7 | 2008-11-20 | ||
| 123.0°W | Galaxy-18 | US | Intelsat | Television and radio broadcasting | North America | 21 May 2008, Zenit-3SL | Hybrid C/Ku band satellite | 2008-11-19 | |
| 121.0°W | Galaxy-23 | US | Intelsat | Direct Broadcasting | North America | 7 August 2003, Zenit-3SL | Hybrid C/Ka band/Ku band satellite; C-band payload referred to as Galaxy-23 | 2008-11-26 | |
| EchoStar-9 | US | Echostar/DISH Network | Direct Broadcasting | North America | 7 August 2003, Zenit-3SL | Hybrid C/Ka band/Ku band satellite; Ku/ka band payload referred to as EchoStar-9 | 2008-11-26 | ||
| 119.0°W | DirecTV-7S | US | DirecTV | Direct Broadcasting | 54 Ku band transponders[8] | 4 May 2004, Zenit-3SL | 8 active transponders at this time | 2008-11-26 | |
| 110.0°W | EchoStar-11 | US | Echostar/DISH Network | Direct Broadcasting | 17 July 2008, Zenit-3SL | 2008-11-19 | |||
| DirecTV-5 | US | DirecTV | Direct Broadcasting | 7 May 2002, Proton | 32 Ku band transponders | ||||
| 101.1°W | DirecTV-9S | US | DirecTV | Direct Broadcasting | 13 October 2006, Ariane 5-ECA | ||||
| 97.0°W | Galaxy-19 | US | Intelsat | Television and Radio Broadcasting | 24 C- and 28 Ku band transponders North America | 24 September 2008, Zenit-3SL | 2008-11-20 | ||
| 77.0°W | EchoStar-8 | US | Echostar/DISH Network | Direct Broadcasting | 21 August 2002, Proton | 110°W[9] | 2008-11-19 | ||
| 72.7°W | EchoStar-6 | US | Echostar/DISH Network | Direct Broadcasting | 14 July 2000, Atlas IIAS | 2008-11-19 | |||
| Location | Satellite | Source | Operator | Type | Coverage | Launch date/rocket (GMT) | All locations | Remarks | As of |
| 68.5°E | Intelsat 7 | ESA | 16 September 1998, Ariane 44LP | ||||||
| 166.0°E | Intelsat 8 | US | Intelsat | Cable Head-End & Direct Broadcasting | C and Ku band transponders Asia-Pacific Australia |
4 November 1998, Proton-K | |||
| En route to | Satellite | Source | Operator | Type | Coverage | Launch date/rocket (GMT) | Previous locations | Remarks | As of |
| 166.0°E | Intelsat 19 | US | Intelsat | Cable Head-End & Direct Broadcasting | 24 C and 34 Ku band transponders Asia-Pacific Australia |
1 June 2012, Zenit-3SL | Replacing Intelsat 8 | 2012-6-1 | |
| 93.1°W | Galaxy-25 | US | 24 May 1997, Proton-K | formerly Telstar 5 | 2008-11-20 | ||||
Failures
The SSL 1300 had a series of failures in 2001. Since that time, electrical failures (Intelsat 7, PAS 6, Galaxy 27) and failure of the satellite's solar panels to properly deploy (Estrela do Sul 1, Telstar 14R, Intelsat 19) are recurring issues.
| Satellite | Operator | Detail | Failure Date |
|---|---|---|---|
| Echostar 5 | Echostar | Dual momentum wheel failures.[10] | 2001-07 and 2003–12 |
| Echostar 6 | Echostar | Partial thruster failure. | 2001 |
| Telstar 14 / Estrela do Sul 1 | Telesat | Solar panel deployment failure.[11] | 2004-01-11 |
| Telstar 14R / Estrela do Sul 2 | Telesat | Solar panel deployment failure.[11] | 2011-05-20 |
| GOES 9 | NOAA | Momentum wheel problems. | 1998-06-01 |
| PAS 6 | PanAmSat | Total power loss. | 2004-03-17 and 2004-04-01 |
| Intelsat 7 | Intelsat | Partial power loss. | 2001-09-06 |
| Galaxy 26 | Intelsat | Multiple system failures. Control processor failure. | 2001 and 2008-06-28 |
| Galaxy 27 | Intelsat | Electrical failure. | 2004-11-28. |
| DirecTV 6 | DirecTV | Solar flare damage. | 1997-04 |
| Intelsat 19 | Intelsat | Solar panel deployment failure.[12][13] | 2012-06-01 |
References
- ↑ "About Optus - Satellite Network". Optus.
- ↑ "1300 Series Satellite Platform". Space Systems/Loral.
- ↑ "FS-1300". Encyclopedia Astronautica.
- ↑ "Space Service Loral (SSL): LS-1300". Gunter's Space Page.
- ↑ "International Space Technologies, Inc. Debuts Its Stationary Plasma Thrusters On Loral-Built MBSat Satellite". SSL. June 28, 2004. Retrieved 18 August 2016.
- ↑ "Thrusters". Moog Inc. Retrieved 2016-08-09.
- 1 2 3 4 5 6 7 8 9 "SSL Achieves Milestone, 100 Satellites Delivered Based on the 1300". sslmda.com. Retrieved 2015-09-21.
- ↑ "Space Systems/Loral-Built DIRECTV 7S Satellite Successfully Launched". Space Systems/Loral.
- ↑ "EchoStar Satellites and Orbital Slots". Echostar Knowledge Base. Archived from the original on 6 March 2012. Retrieved September 25, 2015.
- ↑ "Spacecraft Digest - Echostar 5". Analytical Graphics, Inc. (AGI).
- 1 2 de Selding, Peter B. (25 May 2011). "Balky Satellite Solar Panel Threatens Telesat's Growth Plans in S. America". Space News. Retrieved 2 June 2012.
- ↑ de Selding, Peter B. (2 June 2012). "Intelsat 19 Satellite Fails To Deploy Solar Array". Space News. Retrieved 2 June 2012.
- ↑ de Selding, Peter B. (7 June 2012). "Probe of IS-19 Solar Array Problem Focuses on Sea Launch Rocket". Space News. Retrieved 7 June 2012.