Satnews Daily
February 10th, 2020

Customized RUAG Dispenser for OneWeb's Satellites

On February 7, when 34 Airbus OneWeb Satellites (OneWeb) launched onboard a Soyuz rocket from the Baikonur Cosmodrome, Kazakhstan, RUAG Space had critical mission products onboard that were customized for the mega satellite constellation.

RUAG Space built the satellite dispenser, which functions as an interface between the Soyuz rocket and satellites. The dispenser is tailored to the need of a constellation like OneWeb, being able to deposit up to 36 satellites safely into space.

Starting from the launch in February 2020, the RUAG built OneWeb dispenser included a conical top structure, a “hat,” that has the capability to host as many as four additional OneWeb satellites per mission. RUAG has developed a unique and cost effective solution that enables OneWeb to maximize the number of satellites per Soyuz launch. The top structure was developed within the contract with Arianespace for the OneWeb program.

RUAG dispensers, produced in Sweden, are especially suitable for spacecraft constellations such as OneWeb, where a high number of spacecraft need to be placed in orbit within a short time frame. At its lower interface, the dispenser structure is bolted to the launch vehicle upper stage. Each satellite is attached to the dispenser in separation nodes. The RUAG dispenser provides a stiff connection in each node during launch, a safe release and an accurate separation provided by the four separation nuts and spring units.

RUAG Space manufactures the satellite panels used by OneWeb Satellites in Titusville, Florida. The OneWeb structures (satellite back-bone) are manufactured using the Automated Potting Process (APM). The APM process—developed by RUAG Space—is a revolutionary production method that uses a pick and place machine to rapidly position special inserts filled with adhesive into the satellite structure’s sandwich panels.

In Austria, RUAG Space produced the multi-layer thermal insulation which protects the OneWeb satellites against the cold and heat in space from approx. minus 150°C to plus 150°C (-238 degrees F to 302 degrees F). The insulation consists of several layers of metal-evaporated polyimide film. RUAG Space in Austria also built handle equipment and containers that OneWeb uses to transport the assembled satellites to the different launch sites as well as the corresponding handling at the launch sites. The high-tech, custom satellite containers are used to transport the satellites to the worldwide rocket launch centers. The containers are equipped with a specifically designed damping systems and climate-control.

RUAG Space EVP Peter Guggenbach said the company's dispenser is super-light and includes state-of the art technology to safely place the satellites in orbit. RUAG products contributing to this important projectnwill enhance communication around the world.