Tim Peake opens new Thales facility in Belfast

The astronaut Tim Peake officially opened Thales’ Space Propulsion Integration Centre in Belfast today.

Known as Hall-effect Thrusters, the propulsion systems will use electrical energy collected from the sun to accelerate inert xenon gas from an electric thruster. The thrusters have an exhaust velocity of approximately 10,000m per second, or between 50 and 100 times the speed of sound in air.

This can reduce the cost of launching a satellite, or allow them to carry larger loads, according to Dougie Davidson, head of space programmes at Thales Belfast.

“It makes it possible to carry a larger payload, or to launch a satellite at a lower cost because of the reduction in the amount of fuel that has to be carried,” he said. “It can save approximately 400kg of launch weight for a four-tonne satellite.”

Electric propulsion systems use around one-fifth of the propellant used by conventional chemical engines. This is particularly important at a time when the economics of space propulsion are in the spotlight, said Davidson.