Time-Triggered Ethernet (SAE AS6802) for Safety-Critical Flight Control

Replacing legacy bus architectures with deterministic, fault-tolerant Gigabit networking.

Guaranteed Bandwidth and Microsecond Schedulability

Conventional Ethernet permits packet collisions and random backoff delays, making it unsafe for flight control. TTEthernet injects synchronization frames that divide bandwidth into hard time-triggered (TT) windows, ensuring primary actuator commands arrive with sub-microsecond determinism.

Mixed-Criticality Traffic Coexistence

Flight-critical fly-by-wire packets (DAL A) share the physical optical fiber seamlessly with rate-constrained telemetry (DAL B) and standard best-effort passenger Wi-Fi (DAL E) without the possibility of lower-priority traffic causing starvation.

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