Using LEGO® to simulate ESA's touchdown on a comet

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This is not the first time that LEGO bricks have been used by the Rosetta mission. Detlef once created a LEGO model of the whole spacecraft to visualise its flight path during meetings. Not only did the orbital journey become apparent in those meetings, so did the desire of everyone to own a LEGO version of Rosetta.

What started as a small model has blossomed into a high-fidelity education kit. It was obvious on the student’s faces and those of the professors that this was an unconventional ‘first’ in the history of the ancient University of Rome.

The lander model comes together

“It was quite difficult, because all the moving parts are not so easy to rebuild so we had to figure out something, some way to realise some mechanism that could move,” said Filippo Ales, a student of aerospace engineering.

For example, Philae has ‘ice screws’ on its legs that drill into the comet at impact to stop it bouncing off in the low gravity. A harpoon also holds the lander on the surface.

On top of the lander is a small rocket engine that fires to keep Philae in position while the screws and the harpoon finish their job of anchoring it.

Some of these features are reproduced on the model. LEGO Mindstorms components allow moving parts to be controlled by a simple home computer.

"I liked it a lot to assemble everything, I thought is was real fun,” said student Monserrat Olympia Pineda Arqueros. “I would recommend it to all students to do this assembly exercise with LEGO."

The feedback from the engineering students on the prototype will be used by ESA, the German Aerospace Center DLR, Europlanet, Lightcurvefilms and LEGO to finalise the Education Kit and adapt it to the needs of European curricula.