To continue the development of the semi-active isolation technology to meet the performance requirement up to 500Hz and introduce/derisk the critical hold down and release functionality.

Microvibrations are a critical issue to more and more ESA missions and represent a significant technical challenge due to the stringent stability requirements of the payloads. The ongoing TDE activity ?High performance microvibration isolation system? is developing a very promising semi-active isolation technology based on electro-magnetic shunt damper, which can be used to isolate either noise sources or payloads. The current activity is in the process of testing the technology at breadboard level.Some improvements are required to ensure the required performance over the complete frequency range. It currently provides excellent results up to 300Hz.This activity encompasses the following tasks:- Upgrade the isolation system design to meet the functional requirements up to 500Hz. This includes material upgrades and a redesign of the magnetic design.- Complete the design with the critical hold down and release function: HDRMs and locking features in the struts- Assembly and testing of a new BB model. This includes full functional testing in ambient only and derisk environmental testing (thermal, vibration, shock, deployment, but not TVAC)- Functional testing at different temperatures, at sub-assembly level only.