What are two types of electronic fuel controls for turbine engines?

What are two types of electronic fuel controls for turbine engines?

• A. Analog electronic engine control and digital electronic engine control.
• B. Supervisory electronic engine control only.
• C. Full-authority digital electronic control only.
• D. Supervisory electronic engine control and full-authority digital electronic control.

Answer: (D)

Electronic fuel control in turbine engines is organized into two levels: supervisory electronic engine control and full-authority digital electronic control. The supervisory unit monitors engine conditions, enforces limits, and handles safe operation by observing sensor data and ensuring the engine stays within predefined boundaries. The full-authority digital electronic control is the primary device that directly meters fuel to the engine, reacting to throttle input and sensor information to precisely control fuel flow for performance and safety, with the authority to override other controls as needed. Together, these two types cover both the monitoring/ protection role and the direct fuel metering role. The other options mix in analog concepts or limit the classification to a single function, whereas turbine engines use both supervisory control and a full-authority digital control system.

Electronic fuel control in turbine engines is organized into two levels: supervisory electronic engine control and full-authority digital electronic control. The supervisory unit monitors engine conditions, enforces limits, and handles safe operation by observing sensor data and ensuring the engine stays within predefined boundaries. The full-authority digital electronic control is the primary device that directly meters fuel to the engine, reacting to throttle input and sensor information to precisely control fuel flow for performance and safety, with the authority to override other controls as needed. Together, these two types cover both the monitoring/ protection role and the direct fuel metering role. The other options mix in analog concepts or limit the classification to a single function, whereas turbine engines use both supervisory control and a full-authority digital control system.