How are the outflow valves actuated?

How are the outflow valves actuated?

• A. Electrically
• B. Hydraulically
• C. Pneumatically
• D. Mechanically

Answer: (A)

Outflow valves are actuated electrically. The cabin pressure controller sends electrical signals to an electric actuator that moves the valve open or closed, regulating how much cabin air exits to maintain the target cabin pressure. This electric actuation provides precise positioning, and the system uses feedback from a position sensor to keep the valve at the correct setting. Using electric actuation simplifies the system and reduces dependence on bleed air or hydraulics, fitting neatly with the aircraft’s pressurization control logic.

Outflow valves are actuated electrically. The cabin pressure controller sends electrical signals to an electric actuator that moves the valve open or closed, regulating how much cabin air exits to maintain the target cabin pressure. This electric actuation provides precise positioning, and the system uses feedback from a position sensor to keep the valve at the correct setting. Using electric actuation simplifies the system and reduces dependence on bleed air or hydraulics, fitting neatly with the aircraft’s pressurization control logic.