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tag:blogger.com,1999:blog-6762481015010870446.post-5608196772015842443: Galileo Launch Injection Anomaly: Solar Arrays Deployed, Software Errors Likely the Cause of Failure
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Direct link Galileo Launch Injection Anomaly: Solar Arrays Deployed, Software Errors Likely the Cause of Failure

29 Aug 2014, 20:55 UTC Operations continue smoothly for Galileo Sat 5-6. Both satellites now have both sets of their solar arrays fully deployed and generating power. The satellites are safely under control, despite having been released on a lower and elliptical orbit instead of the expected circular orbit on 22 August. That failure was likely caused by software errors in the Fregat-MT rocket’s upper-stage, Russian newspaper Izvestia reported Thursday. “The nonstandard operation of the integrated management system was likely caused by an error in the embedded software. As a result, the upper stage received an incorrect flight assignment, and, operating in full accordance with the embedded software, it has delivered the units to the wrong destination,” an unnamed source from Russian space Agency Roscosmos was quoted as saying by the newspaper.Both the upper-stage and the software for it were developed by a Moscow-based government-owned corporation, the Academician Pilyugin Scientific-production Center of Automatics and Instrument-Making, or the Academician Pilyugin Center.Rushing to conclusions on the possible causes of the Galileo satellites incident before the end of the EU-Russian investigation is both too early and inappropriate, a Russian Rocket and Space Corporation (URSC) spokesperson told RIA Novosti on Thursday.“While the commission is still working, it is inappropriate ...

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