Galileo satellite fuelling

Europe's fifth and sixth Galileo satellites are being prepared for launch. The fuelling of the two satellites, allowing them to fine-tune their orbits and maintain their altitude over the course of their 12-year lifetimes, took place on 7 – 8 August 2014. Engineers donned protective SCAPE (Self Contained Atmospheric Protective Ensemble) suits to fill the satellites with hydrazine propellant.