Sub-Microsecond Clock Synchronization with Time-Triggered Ethernet (SAE AS6802)
Core aerospace engineering and protocols for Time-Triggered Ethernet.
The Convergence of Avionics Traffic Classes
Traditionally, flight-critical control, situational display video, and passenger cabin entertainment required separate physical network cables to prevent non-critical traffic from congesting flight controls.
Mixed-Criticality Networks via TTEthernet
AvionicsData implements SAE AS6802 Time-Triggered Ethernet: safety-critical fly-by-wire packets are scheduled in dedicated microsecond time slots that preempt all other traffic. Non-critical telemetry flows during idle intervals, slashing aircraft wiring harnesses by over 40%.
- SAE AS6802 Standard: Fault-tolerant clock synchronization across heterogeneous flight computers.
- Three Traffic Classes: Time-Triggered (TT), Rate-Constrained (RC), and Best-Effort (BE).
- Zero-Jitter Scheduling: Executing safety-critical actuator loops at deterministic microsecond offsets.
- NASA Orion & Ariane 6 Proven: Space-grade reliability adapted for urban air mobility.
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