The full BepiColombo stack seen in the Large European Acoustic Facility (LEAF) at ESA’s test centre in June 2017. The walls of the chamber are fitted with powerful speakers that reproduce the noise expected during launch.
From bottom to top: the Mercury Transfer Module (sitting on top of a the cone-shaped adapter), the Mercury Planetary Orbiter (with an antenna facing towards the camera), and the sunshield (top), within which sits the Mercury Magnetospheric Orbiter.