SATLANTIS team is currently immersed in the GARAI Mission’s preparations, having recently completed a comprehensive vibration test campaign for the structural model of the entire GARAI satellite in Sweden. The structural model serves as a crucial component, mirroring the anticipated structural behavior of the flight model. It comprises the structural representation of our payload alongside that of the OHB Sweden InnoSat platform.

A noteworthy aspect of our payload is the integration of two cameras onto an optical bench, complete with their electronics. Additionally, vibration isolators have been strategically implemented to mitigate the impact of loads transmitted to the payload through the platform. The optical bench also houses two star-tracker attitude sensors, enhancing precision in pointing and image geolocation. Designing the optical bench and implementing the isolators posed significant challenges for Satlantis. The objective of the test campaign was to validate that both elements exhibited the expected structural behavior.

Simultaneously, OHB Sweden introduced several enhancements to its InnoSat platform, seeking validation through this campaign.

The measurements collected during the test campaign provide essential data for correlating the structural models of the satellite. This correlation enables a more precise calculation of the various load scenarios the satellite will encounter throughout its operational lifespan.

The satellite’s response when excited at its natural frequency has been tested during the sine test (HLS).

The GARAI Mission consists of two twin satellites (expected to be launched in Q4 -2024 / Q1 2025), boarding each one iSIM-90 and one iSIM-170.