The structural model visible in the image represents Ariel's mechanical framework and mass configuration, closely resembling the final flight model. This assembly includes a service module, which supports essential components such as propulsion, power, and communication systems, and a simplified mock-up of the payload module that will eventually house Ariel's science instruments.

The immediate objective is to complete the spacecraft's mechanical test campaign by year's end, a series of rigorous trials confirming Ariel's structural integrity for launch. Among the key tests are vibration and acoustic campaigns that will simulate the extreme launch environment. During vibration tests, the model will be subjected to progressively stronger forces on a vibrating platform known as 'the shaker.' In acoustic testing, it will be placed in a chamber that subjects it to powerful sound waves, imitating the intense noise it will experience during liftoff.

Additionally, this structural model will help engineers understand how launch-related forces will affect Ariel. A 'separation and shock' test will also be performed, replicating the spacecraft's detachment from its Ariane 6 rocket mount.

Once fully assembled and tested, Ariel will embark on its mission atop an Ariane 6.2 rocket to the second Lagrange Point (L2), where it will begin its detailed survey of exoplanet atmospheres.

Image description: The collage shows three views of the spacecraft's structural model under assembly in a spacious, sterile hall. On the left, the complete model is shown beside a person, highlighting its height. The upper right image offers a closer view of the mock science payload with a fan-like structure and rectangular silver box. The lower right zooms in on the service module, featuring a round silver housing.

Related Links
Ariel at ESA
Lands Beyond Beyond - extra solar planets - news and science
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