Iodine Thruster Used to Change the Orbit of a Satellite for the First Time Ever

Iodine thruster used to change the orbit of a small satellite for the first time ever.
Credit: ThrustMe

For the first time ever, a telecommunications satellite has used an iodine propellant to change its orbit around Earth.

The small but potentially disruptive innovation could help to clear the skies of space junk, by enabling tiny satellites to self-destruct cheaply and easily at the end of their missions, by steering themselves into the atmosphere where they would burn up.

The technology could also be used to boost the mission lifetime of small CubeSats that monitor agricultural crops on Earth or entire mega-constellations of nanosats that provide global internet access, by raising their orbits when they begin to drift towards the planet.

The technology was developed by ThrustMe, a spin-off company from the École Polytechnique and the French National Centre for Scientific Research (CNRS), and supported by ESA through its program of Advanced Research in Telecommunications Systems (ARTES).

It uses a novel propellant – iodine – in an electric thruster that controls the satellite’s height above Earth. Iodine is less expensive and uses simpler technologies than traditional propellants.

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