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ROCKET SCIENCE
Iodine thruster could slow space junk accumulation
by Staff Writers
Paris (ESA) Jan 26, 2021

ThrustMe launched its iodine thruster on a commercial research nanosat called SpaceTy Beihangkongshi-1 that went into space in November 2020. It was test fired earlier this month before being used to change the orbit of the satellite.

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 Ecole Polytechnique and the French National Centre for Scientific Research (CNRS), and supported by ESA through its programme 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.

Unlike many traditional propellants, iodine is non-toxic and it is solid at room temperature and pressure. This makes it easier and cheaper to handle on Earth.

When heated, it turns to gas without going through a liquid phase, which makes it ideal for a simple propulsion system. It is also denser than traditional propellants, so it occupies smaller volumes onboard the satellite.

ThrustMe launched its iodine thruster on a commercial research nanosat called SpaceTy Beihangkongshi-1 that went into space in November 2020. It was test fired earlier this month before being used to change the orbit of the satellite.


Related Links
ThrustMe
Rocket Science News at Space-Travel.Com


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ROCKET SCIENCE
New Year, New Record for Australia's Gilmour Space
Gold Coast, Australia (SPX) Jan 20, 2021
Australia's leading rocket company, Gilmour Space Technologies, has ushered in the New Year with a successful hotfire of the world's largest single-port hybrid rocket engine. [See video] "We achieved a record 91 kilonewtons (or 9 tonnes-force) of thrust in this initial verification test of our main engine," said Adam Gilmour, CEO and co-founder of Gilmour Space, a Queensland-based company that is developing a three-stage rocket capable of launching small satellites into low earth orbits. "Th ... read more

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