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Eutelsat W3B, W3C, W3D / Eutelsat 3D, 16A

Eutelsat W3B [Thales Alenia]

In February 2008 Thales Alenia Space has been awarded a contract to design, manufacture and deliver a satellite for Eutelsat. Terms of the deal were not disclosed.

The Eutelsat W3B satellite, based on Thales' Spacebus-4000C3 platform, was equipped with two fixed and three deployable antennas and was to provide 3 Ka- and 53 Ku-band transponders.

W3B was to be colocated at 7° east with Eutelsat's W3A satellite and will provide broadcast and telecommunications services across Europe, the Middle East and Africa. But following the problems of W2M shortly after launch, W3B was to take W2M's place to replace the aging W2 satellite.

As a replacement for W3B's original mission at 7° east, Eutelsat ordered in March 2009 the identical Eutelsat W3C satellite.

W3B developed a sizeable leak in the proulsion system directly after launch and was declared a total loss. The failure was likely caused by a sudden, catastrophic leak in a single propellant tube connected to one of the satellite’s 16 thruster motors. Eutelsat ordered in December 2010 the Eutelsat W3D satellite as a replacement.

In December 2011 Eutelsat announced, that their satellite assets will be renamed under a unified brand name effective from March 2012. W3C and W3D became Eutelsat 16A and Eutelsat 7B respectively. Eutelsat 7B was later renamed Eutelsat 3D, when it was reasigned to the 3° East position. In September 2014, it was reasigned the name Eutelsat 7B and the 7° East position.

Nation: International
Type / Application: Communication
Operator: Eutelsat
Contractors: Thales Alenia
Equipment: 53 Ku- and 3 Ka-band transponders
Configuration: Spacebus-4000C3
Propulsion: S400
Power: 2 deployable solar arrays, batteries
Lifetime: 15 years
Mass: 5370 kg (#W3B), 5470 kg (#3D)
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
Eutelsat W3B 2010-056A 28.10.2010 Ko ELA-3 p Ariane-5ECA with BSat 3b
Eutelsat W3C → Eutelsat 16A 2011-057A 07.10.2011 Xi LC-2 CZ-3B/G2
Eutelsat 3D (ex Eutelsat 7B ex Eutelsat W3D) 2013-022A 14.05.2013 Ba LC-200/39 Proton-M Briz-M (Ph.3)
Further Eutelsat W missions:
Further Eutelsat missions: