RUAG Space — It’s A Wrap With Blankets For Galileo Satellites And More

[SatNews] RUAG Space has been selected to supply components worth a total of approximately 35 million Euros (48 million Swiss Francs) to equip 14 satellites in the European Galileo navigation program. The news was announced on Thursday at the ILA Berlin Air Show by Peter Guggenbach, CEO RUAG Space. Guggenbach reported that during the preceding weeks Europe’s largest independent supplier of products for the space industry had concluded the necessary agreements with the prime contractor for the Galileo satellites, OHB System AG (Bremen, Germany), and with further industry partners. In addition to the central control computers and further electronic components, RUAG Space will also be responsible for manufacturing alignment mechanisms for the satellite’s solar arrays, as well as antennas and a special multi-layer insulation blanket.

“Participation in the Galileo project not only represents a major business deal for RUAG but also confirms the strategic direction being taken by our Space division,” explained Peter Guggenbach. “We have gathered a number of different niche space suppliers under the RUAG umbrella. As Europe’s largest independent supplier, we are now able to offer a comprehensive product portfolio,” added the CEO of RUAG Space.

In the future, Galileo will provide Europe with its very own satellite navigation system independent from the American GPS system. In contrast to the USA’s military system, Galileo has been designed as a civil system and optimized for the needs of private and commercial users. Just like GPS, Galileo will transmit a signal that can be received free of charge by users everywhere. Future navigation receivers will be able to process the signals from Galileo and GPS satellites simultaneously. Users will benefit from improved satellite reception and, ultimately, from more accurate location-finding capabilities. The Galileo program is supported by European Union funding, while Switzerland has signed a bilateral agreement to allow it to participate in the Galileo program.

The Galileo constellation will ultimately consist of a total of up to 30 satellites. Construction of the first four satellites is already underway, with RUAG Space playing a significant role. In January, the German space company OHB was commissioned by the European Commission to build 14 satellites. Contracts are still to be awarded for the construction of further satellites.

The central control computers for the Galileo satellites will be manufactured by RUAG Space in Gothenburg, Sweden. These computers are designed to control and monitor the navigation payload and numerous other subsystems. They will also control the temperature and power distribution onboard the satellites. RUAG Space Austria is also involved in the process of developing and building these computers. Further contributions from Sweden include antennas for internal system communications and processor boards for the navigation satellites’ digital radio receivers.

RUAG Space facilities in Zurich, Switzerland, will be supplying the mechanisms used to align the Galileo satellites’ solar array. As a satellite orbits the Earth, it continuously changes its alignment to the sun. Special mechanisms known as SADMs (Solar Array Drive Mechanisms) ensure that the solar array precisely tracks these changes in order to obtain the maximum energy yield by optimizing the orientation of the solar cells relative to the sun.

At its site in Vienna, Austria, RUAG Space is producing a special thermal insulation blanket. The Galileo satellites will be ‘wrapped up’ almost entirely in this blanket to ensure that the sensitive onboard electronics are not damaged by the extreme temperature fluctuations encountered by the satellites in space.