File:Surrounded by Gaia ESA15496914.jpeg

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Mission specialists with a working model of the Gaia spacecraft's internal workings

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Description
Afrikaans: 'n Volgrootte werksmodel van Gaia se aanboord-beheerstelsels het hierdie week (d.i. einde Junie 2015) uit Frankryk in Duitsland aangekom. Die Avionika-model wat in 'n sirkelvormige monteerbank opgestel is, simuleer die bedryfstelsels van die werklike satelliet wat tans sowat 1 500 000 km van die Aarde af om die Son-Aarde se L2-punt wentel. Airbus Defence and Space in Toulouse is die hoofkontrakteur tydens Gaia se ontwikkeling.

Met die model se aanwesigheid by ESA se ESOC oftewel Europese Ruimtebedryfsentrum in Darmstadt, Duitsland, het die ESA-vlugbeheerspesialiste wat oor Gaia toesig hou, nou toegang tot ’n ten volle funksionele toetsbank van die binnewerkinge van hierdie karteerder van oor 'n miljard sterre. Die model sal vir die orige deel van die sending by ESOC bly, met die toesigspan wat opgelei is om dit te gebruik en met die ondersteuning van AirbusD&S in stand te hou. Die model beslaan 'n yslike 4x4 m aan sy basis, en kon weens hierdie spanwydte net snags verskuif word.
Gaia is op 'n sending om die grootste en mees akkurate 3D-kaart van ons Melkweg te maak deur oor 'n duisend miljoen sterre waar te neem. Gaia sal elkeen van sy teikensterre sowat 70 keer oor ’n tydperk van vyf jaar moniteer, en sal hul posisies, afstande, bewegings en veranderinge in helderheid presies op rekord stel. Daar word verwag dat dit honderdduisende nuwe hemelse voorwerpe, waaronder ekstrasolêre planete en bruindwerge, sal ontdek en honderdduisende asteroïdes binne ons eie Sonnestelsel sal waarneem. Die sending sal ook om en by 'n halwe miljoen afgeleë kwasars bestudeer en sal Albert Einstein se Algemene Relatiwiteitsteorie aan streng nuwe toetse onderwerp.
Op beeld (L-R) is Sonia Perez van AirbusD&S, Andreas Rudolph, Kevin Kewin en Guillermo Lorenzo.

Meer beelde is via Flickr, die Gaia-sendingwebwerf en Gaia-sendingbedrywighede beskikbaar.
English: A full-size working model of Gaia’s internal systems arrived in Germany this week. The Avionics Model is mounted in a circular set-up representing the systems on the actual satellite, now orbiting the Sun–Earth L2 point about 1 500 000 km from Earth.
With the model at ESA’s European Space Operations Centre, ESOC, in Darmstadt, Germany, the ESA flight control specialists responsible for Gaia now have access to a fully functional test bench of the inner workings of the billion-star surveyor.
The model will remain at ESOC for the rest of the mission, with the team trained to use and maintain it with the support of Airbus Defence and Space, Toulouse, the prime contractor during Gaia’s development.
The model was a whopping 4x4 m at its base, and could only be moved at night owing to its size.
Gaia is on a mission to make the largest, most precise 3D map of our Galaxy by surveying more than a thousand million stars.
Gaia will monitor each of its target stars about 70 times over a five-year period. It will precisely chart their positions, distances, movements and changes in brightness. It is expected to discover hundreds of thousands of new celestial objects, such as extrasolar planets and brown dwarfs, and observe hundreds of thousands of asteroids within our own Solar System.
The mission will also study some 500 000 distant quasars and will provide stringent new tests of Albert Einstein’s General Theory of Relativity.
In the image (L-R): Sonia Perez (AirbusD&S), Andreas Rudolph, Kevin Kewin, Guillermo Lorenzo. More images via Flickr.
Gaia mission operations
Gaia mission website
Date (released)
Source Surrounded by Gaia
Author ESA/L. Guilpain
Activity
InfoField
Human Spaceflight

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