What does Vfe stand for in aircraft performance?

What does Vfe stand for in aircraft performance?

• A. Flap neutral speed
• B. Maximum flap extended speed
• C. Best glide speed
• D. Maximum fuel efficiency speed

Answer: (B)

Vfe is the maximum speed at which you may fly with the flaps extended. When flaps are down to increase lift for takeoff or landing, the wing and flap hardware have structure and mechanism limits, so there’s a top speed you should not exceed to avoid damage or flutter. Beyond that speed, retract the flaps to stay within safe limits. So this choice correctly matches the idea of a maximum flap extended speed. Flap neutral speed isn’t a standard term, best glide speed is about unpowered flight efficiency, and maximum fuel efficiency speed isn’t a defined flight-parameter limit.

Vfe is the maximum speed at which you may fly with the flaps extended. When flaps are down to increase lift for takeoff or landing, the wing and flap hardware have structure and mechanism limits, so there’s a top speed you should not exceed to avoid damage or flutter. Beyond that speed, retract the flaps to stay within safe limits.

So this choice correctly matches the idea of a maximum flap extended speed. Flap neutral speed isn’t a standard term, best glide speed is about unpowered flight efficiency, and maximum fuel efficiency speed isn’t a defined flight-parameter limit.