ACU – Payload adapter

The ACU payload adapter ensures interfaces between the launcher and its payload(s). This component consists of:

  • A conical or a cylindrical structure with:
    • An upper interface compatible with the spacecraft
    • A bottom bolted interface with the launcher
  • A separation system (generally as a clamp-band) with springs to meet spacecraft separation requirements
  • An electrical system including satellite umbilical lines and vibration sensors
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