Advanced Full Authority Digital Electronic Controller

A-FADEC comprises engine-mounted Digital Electronic Control Unit (DECU) with control laws embedded in it, engine fuel metering units, hydraulic actuation systems, engine sensors and a dedicated permanent magnet power generation unit. A-FADEC being the safety critical system, has several levels of redundancies built-in both in terms of electrical and hydraulics. Design features specific to meet safety requirements of a single engine aircraft application. 

• Model based control philosophy
• Integrated engine health management functions for life and usage monitoring
• Control loops for fuel flow rate, exhaust nozzle area, compressor and fan variable geometry
• Engine mounted fuel cooled chassis with vibration / shock isolators
• DO 178B level A compliant software design process
• Interfaces for coordinated flight and propulsion system control
• Dual Electrical and Hydraulic redundancy with Cross Channel Data Link (CCDL)
• Fault detection, isolation and accommodation logics with gracefully degraded control modes