3. System EMC specifications – Space launchers

3.1 Coexistence of different products

In the previous chapters, we discussed the main components of a system: electronic equipment, wiring and structures. For the most complex systems, such as launchers, other components complete the list. These systems include pyrotechnic products for firing thrusters, pyrotechnic cutting systems and propellant-fuelled engines. These various elements have an impact on EMC at different levels.

As far as pyrotechnic products are concerned, their presence implies susceptibility tests to conducted and radiated effects to justify the achievement of safety margins on the ground or reliability in flight (robustness to electrostatic phenomena in flight in particular). The layout of these products is also taken into account with regard...