Two
satellites being used in a £4.4bn European project to develop a satellite
navigation system which rivals the American GPS network have gone into the
wrong orbit.
Arianespace,
the company responsible for the launch, said the satellites 'had been placed on
a lower orbit than expected', after being fired into space yesterday on a
Russian-made Soyuz rocket from French Guiana.
The
European Space Agency said space officials are now investigating whether the
mistake will complicate their efforts to develop the publicly-funded Galileo
satellite navigation system.
It
is not clear whether the satellites will be able to work properly in the
different orbit, nor whether the orbits are now able to be corrected.
The
satellites, Doresa and Milena, were fired into space after a 24-hour delay
caused by bad weather. They are the fifth and sixth satellites to be launched
for the ESA’s geo-positioning network.
The
first two were launched in 2011, followed by another pair in 2012. The latest
two satellites were already more than one year behind schedule.
The
£4.4bn project, funded and owned by the European Union, is intended to provide
Europe with an independent alternative in case of signal failure on the
existing U.S. global positioning system or on Russia’s Glonass system.
The
project will apparently create 15,000 to 20,000 jobs within the EU, according
to the ESA.
In
total, the Galileo network aims to have 30 operating satellites by 2017.
Arianespace recently announced it would launch a further 12 satellites from the
start of next year.
Jean-Yves
Le Gall, president of the French space agency CNES, said the investigation
still needed to determine precisely how far off course the satellites were.
He
said European Space Agency experts in Toulouse, France, and Darmstadt, Germany,
were calculating whether small motors inside the satellites would be strong
enough to push them into the correct orbit.
Mr
Le Gall said the investigation would take 'several days to understand what has
happened'. He said only then would they be able to see the possible
consequences on the launch calendar.
He
called the Galileo navigation network 'a very complex programme' and said
failures were 'unfortunately part of the life of operations'.
If
the two satellites cannot be pushed to the correct altitude above the earth, he
said, subsequent satellites launched would have to take up the slack.
The programme has faced other
delays and operational hiccups. European Space Agency officials said on
Wednesday they had to reduce the strength of another Galileo satellite's signal
because of unspecified problems.
Culled From Daily Mail
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