Integration Examples

Step-by-step Configuration

A complete, step-by-step DRx system configuration is detailed in the DRx Integration Example section of the 1x PDI Builder user manual.

Bus Lane Examples

The following examples highlight the inherent advantages of the DRx as a fully redundant flight control system. By utilizing multiple Flight Control Computers (FCCs), the architecture provides the flexibility needed to design highly fault-tolerant network configurations. These topologies demonstrate how the DRx safeguards the aircraft against critical points of failure, ensuring mission continuity and operational safety.

Redundant Bus Connection

In a redundant bus configuration, both the Primary FCC and the Recovery FCC are connected in parallel to the same shared communication lines (CAN A/B and RS485 A/B). This topology ensures full media redundancy, allowing both flight control computers to have concurrent access to the exact same peripherals and network channels. If one autopilot unit fails, the operational unit maintains uninterrupted communication over the existing buses.

Splitted Bus Connection

In a splitted bus configuration, the communication channels are completely segregated between the autopilot units to maximize system isolation. The Primary FCC interfaces exclusively with a dedicated set of lines (CAN A/A' and RS485 A/A'), while the Recovery FCC manages an entirely independent set (CAN B/B' and RS485 B/B'). This layout ensures that a localized physical fault, such as a short circuit on one bus domain, remains completely isolated and does not compromise the alternative communication network.