As reported by GPSWorld: At a press conference on Jan. 16, Director General
Jean-Jacques Dordain of the European Space Agency (ESA) announced that
the second errant full-operational capability (FOC) satellite, launched in August,
had started its orbital change maneuver the previous day. He
anticipated that the orbital change would be completed and the final
orbit — “albeit somewhat lower in height than the one into which it was
supposed to go” — achieved in “a few weeks.” He confirmed that both
in-orbit FOCs are working well, fully operational, and providing
excellent “on specification” positioning data.
Two more FOC satellites are ready for launch, and a third has undergone thermal vacuum testing at ESA’s European Space Research and Technology Centre (ESTEC) facility in the Netherlands. Dordain said four would be available to launch soon, and he anticipated up to six FOCs being ready for launch during 2015.
The previous plan had called for four for 2015, but the year’s
anticipated total now includes the two that were held back from launch
during a December 2014 window, so the total number is the same. The
actual launch schedule and launch vehicles are still under discussion,
according to Dordain, and he said the European Commission (EC) would
make a decision at the end of January on this issue. He refused to be
drawn out on what ESA would recommend to EC on this front.
Two more FOC satellites are ready for launch, and a third has undergone thermal vacuum testing at ESA’s European Space Research and Technology Centre (ESTEC) facility in the Netherlands. Dordain said four would be available to launch soon, and he anticipated up to six FOCs being ready for launch during 2015.
Jean-Jacques Dordain |
“As you know, Soyuz did not place the first two FOC
satellites in the right orbit. They only achieved very low orbits. This
led and is still leading to delays in the deployment of the Galileo
constellation. However, it’s not all bad news, because the two FOC
satellites are working perfectly,” Dordain said.
“One of the two has already had its orbit changed, last November,
and once in its new orbit, we ran all the new payload tests, and all
the data that we have show that the FOC payload is the best in orbit
today of the Galileo satellites. We were able to achieve on-spec
positioning with the first FOC and the IOV satellites. It provides us
with highly accurate positioning data,” Dordain said.
“Once we have both FOCs in their final orbits, not their
nominal orbits, it’s true, but they are orbits that mean they will be
usable for a long time, because they no longer go through the Van Allen
belts.”
A video of the news conference is available here. The Galileo portion of the 2-hour video begins at 11:45. The event took place at ESA-HQ, Paris, France.
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