TAG: Arianespace

Galileo FOC Anomaly Traced to Design Ambiguity, Says Inquiry Board

October 8, 2014By

The root cause of the anomaly that sent two Galileo satellites into the wrong orbit is a shortcoming in the system thermal analysis performed during stage design, and not an operator error during stage assembly, according to findings by an independent inquiry board. The Independent Inquiry Board was formed to analyze the causes of the anomaly occurring during the orbital injection of satellites... read more

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Improper Fuel Line Installation Led to Incorrect Galileo Orbit

October 6, 2014By

The cause of two Galileo satellites being released into the wrong orbit August 22 can be traced to improper installation of a hydrazine fuel line, according to Space News and the GalileoGNSS blog. The hydrazine fuel line was installed too close to a supercold helium line on the Fregat upper stage, which caused the hydrazine to freeze long enough to upset the Fregat stage’s orientation... read more

Slung Low, Sweet Satellites: Galileo Anomaly Update

August 28, 2014By and
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The wording is terse, the intent clear. “Following the failure on Friday August 22nd to inject Galileo satellites 5 and 6 into the correct orbit, the European Commission has requested Arianespace and the European Space Agency (ESA) to provide full details of the incident, together with a schedule and an action plan to rectify the problem.” This is the only... read more

Inquiry Commission Appointed Following Galileo Anomaly

August 25, 2014By
The medium-lift workhorse has been raised into a vertical orientation as the mobile gantry  is moved into position.

Following the major anomaly that occurred on August 22 during the Soyuz ST mission carrying two satellites in the Galileo constellation, Arianespace announced today, in conjunction with the European Space Agency (ESA) and the European Commission, the appointment of an independent inquiry commission. The commission is chaired by Peter Dubock, former ESA Inspector General. Its mandate is to establish the circumstances of the anomaly, to... read more

Galileo Satellites Not in Expected Orbit

August 25, 2014By
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After the separation of the two Galileo satellites launched August 22, ongoing analysis of the data provided by the telemetry stations operated by the European Space Agency (ESA) and the French space agency CNES showed that the satellites were not in the expected orbit. According to the initial analyses, an anomaly is thought to have occurred during the flight phase... read more

Arianespace, ESA Sign Contract for New Galileo Launches

August 22, 2014By
The contract for Arianespace’s three Ariane 5 launches to orbit a total of 12 Galileo FOC satellites was signed at the Guiana Space Center by Chairman and CEO Stéphane Israël (seated, at left) and Didier Faivre, ESA director of the Galileo Program and Navigation-related Activities. Joining them were ESA Director General Jean-Jacques Dordain and Daniel Calleja Crespo, director general for Enterprise and Industry, European Commission.

Arianespace and the European Space Agency (ESA), acting on behalf of the European Commission, have signed a contract for three launch services with Ariane 5 ES to step up deployment of Galileo satellites. With this new launch contract and thanks to the performance of Ariane 5 ES, a total of 12 Galileo FOC (Full Operational Capability) satellites will be launched... read more

Squeeze at the Launchpad for Galileo

March 31, 2014By

With the first two full-operational-capability (FOC) Galileo satellites successfully through their thermal-vacuum tests, the program’s next hurdle is securing a firm launch date in June aboard a Europeanized Russian Soyuz rocket, operated from Europe’s spaceport on the northeast coast of South America. It will not be a walk in the park. Competing with the two Galileo FOC satellites for the... read more

Update on EGNOS and GAGAN SBAS Satellites

August 2, 2012By

The EGNOS SES-5 geostationary satellite launched July 9 has arrived at its orbital sot. Meanwhile, India's GAGAN satellite GSAT-10 arrives at its spaceport for launch. read more