Ariane 6 launcher avionics
Pyrotechnical Firing Unit (PFU)
Centralized Multi-Functional Unit (CMFU)
Pyrotechnical Firing Unit and Centralized Multi-Functional Unit
Airbus Crisa has been entrusted to develop two different types of units for Ariane 6, the PFU and the CMFU. For these two units we have incorporated new European technologies that are crucial for enhancing the launcher’s performance and competitiveness.
At Airbus Crisa, we have established an industrial organization focused on producing electronic equipment cost-effectively without compromising quality. Our highly automated production line is prepared to meet the expected cadence of launches. Moreover, sustainability is not forgotten; thanks to a careful selection of materials and lead-free soldering, our products fulfill all the directives that apply to commercial electronics, such as REACh and RoHS.
PFU Features
Main Functions:
- Modular concept, with several possible configurations
- Redundant interface with deterministic Ethernet networks
- Activation of pyrotechnical actuators, both electrically and optically driven
- It contains all the safety barriers
- Monitoring of the pyrotechnical command lines
Key parameters:
- Standby power dissipation: 11.5 W (typical)
- Mass: <11 kg
- Volume (w/o protrusions): 12.6 dm3
- Interface with up to 62 pyrotechnical initiators
CMFU Features
Main functions:
- Modular concept, supporting configurability
- Power conditioning and distribution to the rest of the avionics’ subsystems
- Communications hub, based on deterministic Ethernet
- On-board computers, for flight control and telemetry packets generation
- Driving of the electrovalves of the launcher, specific for upper and lower stages
Key parameters:
- Standby power dissipation: <75 W (all modules on)
- Power distribution capability: 1.2 kW (steady-state)
- Mass: <17.5 kg
- Volume (w/o protrusions): 25.2 dm3
- Ports in the TTE switch: 25
