How ESA engineers built a satellite to film the Ariane 6 inaugural flight

This documentary episode explores the engineering behind YPSat, a satellite designed to capture the launch of Ariane 6. It details the complex coordination required between four critical sub-systems to ensure the satellite survives launch, records key mission moments, and transmits data back to Earth.

The YPSat mission relies on a precise sequence of events. A custom ultra-low-power Wake-Up System (WUS) monitors the launchpad for 45 days, waiting to trigger the battery upon detecting the launch. Once active, the battery powers the On-Board Computer (OBC), which acts as the mission brain, orchestrating the recording of fairing separation and in-orbit imagery.

The final stage involves the telecommunications team, who must manage data transmission to ground stations before the satellite disintegrates during re-entry. Before reaching the Ariane 6 capsule one day prior to launch, the satellite underwent rigorous certification to meet European Space Agency and Arianespace standards.

Source: The Young Professional Satellite - From Theory to Reality (episode 2)