The presentation deals with the design, function and qualification process of a thermally activated separation bracket. This new principle was developed for Sentinel-1 C&D in order to support the satellites demise and thus avoid satellite parts hitting the ground after re-entry.
The principle is based on a soldered cup-cone fixation between antenna and bus. During re-entry, as soon as a temperature of around 140°C is reached at the fixation, the separation bracket is activated and "unsolders", thus the antenna is separated from the bus. This configuration reduces significantly the risk of satellite components hitting the ground after re-entry.