Echostar 11 & 129
Echostar 11 is post to be launched in 07 sometime and I wonder if they will use it to replace the 129.. They are both SSL-1300 birds but the E* 11 will be newer.
http://www.skyrocket.de/space/index_frame.htm?http://www.skyrocket.de/space/doc_sdat/echostar-11.htm
Echostar 11
Space Systems/Loral (SS/L) announced in December 2004 that it has been selected by EchoStar Communications Corporation, Englewood, Colo., to build EchoStar XI, a new direct broadcast satellite (DBS) based on SS/Ls LS-1300 platform that will support EchoStars DISH Network and serve as backup to its existing fleet.
EchoStar XI, anticipated to be delivered in early 2007, will be the fifth SS/L-built satellite in the EchoStar fleet.
Nation: USA
Type / Application: Communication (Direct Broadcasting)
Operator: Echostar
Contractors: Space Systems Loral (SSL)
Equipment: ?
Configuration: LS-1300
Propulsion:
Lifetime:
Mass:
Orbit: GEO
Satellite Date LS Launcher Remarks:
Echostar 11 2007 SL Zenit-3SL
Further Echostar missions:
Echostar 1, 2 (AS-7000)
Echostar 3, 4, 7 (A2100AX)
Echostar 5, 6 (SSL-1300)
Echostar 8 (SSL-1300)
Echostar 9 (SSL-1300)
Echostar 10 (A2100AX)
Echostar 11 (SSL-1300)
Echostar 12 (A2100AX)
Makes me wonder if the E* 11 will be used to backup either E*5 or E*6 since they have had issues with them in the past.
http://www.skyrocket.de/space/index_frame.htm?http://www.skyrocket.de/space/doc_sdat/echostar-5.htm
Echostar 5, 6 / Ciel 1
EchoStar V and VI are series of 2 high-powered direct broadcast satellites (DBS) being built by Space Systems/Loral (SS/L) for EchoStar Communications Corporation.
The power and range of EchoStar V and VI allow EchoStar's DISH Network customers to receive hundreds of television channels of programming. EchoStar's current fleet of six satellites has the capacity to offer 500 channels of content that include digital video and audio, local network programming, Interactive TV and high-speed data services, business television, and other niche services.
EchoStar V and VI have each 32 transponders operating at 125 watts, switchable to 16 transponders operating at 250 watts. Total satellite power will be in autumnal equinox at 10,000 dc watts, making them the most powerful direct broadcast satellite ever manufactured. They are expected to provide more than 12 years of uninterrupted service.
The EchoStar spacecraft is based on SS/L's three-axis, body-stabilized LS-1300 bus, whose modular design is flight-proven and has an excellent record of reliable operation.
Echostar 5 and 6 were originally ordered by MCI as Sky 1A and 1B (or MCI 1 and 2).
In July 2001, Echostar 5 experienced the loss of one of its three momentum wheels. Two momentum wheels are utilized during normal operations and a spare wheel was switched in at the time. A second momentum wheel experienced an anomaly in December 2003 and was switched out resulting in operation of the spacecraft in a modified mode utilizing thrusters to maintain spacecraft pointing. While this operating mode provides adequate performance, it results in an increase in fuel usage and a corresponding reduction of spacecraft life. This operating mode is not expected to reduce the estimated design life of the satellite to less than 12 years. During August 2001, one of the thrusters on Echostar 5 experienced an anomalous event resulting in a temporary interruption of service. The satellite was quickly restored to normal operations mode. The satellite is equipped with number of backup thrusters. In March 2005, the satellite was leased to Ciel Satellite Communications of Canada and moved to 129°W.
Echostar 6 suffered a partial thruster failure in 2001, leading to a performance loss.
http://www.ssloral.com/html/products/1300.html
1300 Series Satellite Platform
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The 1300, an industry leader in power, performance, and reliability, is a space-proven platform for a wide range of satellite services. The 1300 was first introduced in the mid-1980s and has been in constant evolutionary development to deliver increasingly higher power, greater flexibility, and longer mission life, keeping SS/L in the forefront of satellite technology.
The versatile 1300 series has a total satellite power capability ranging from 5 to 25 kW continuously throughout the life of the spacecraft, and can support from as few as 12 active transponders to as many as 150 transponders.
SS/L's 1300 features a lightweight and high-strength structure, fuel-efficient attitude and stationkeeping subsystems, high efficiency and reliable solar arrays and batteries, and advanced command and control subsystems.
SS/L manufactures the 1300 in our state-of-art facility in Palo Alto, California. Integration of components into payload and bus subsystems, as well as satellite system level testing, are all performed in this location with highly efficient and well-established processes. This centralized production philosophy coupled with colocated subsystem and systems engineering resources enables SS/L to deliver reliable satellites on a dependable schedule.