A forward center of gravity influences elevator effectiveness, stall speed, and stability as follows:

Prepare for the Airplanes and Aerodynamics Commercial Pilot Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

A forward center of gravity influences elevator effectiveness, stall speed, and stability as follows:

Explanation:
A forward center of gravity makes the airplane more statically stable in pitch. That nose-forward mass also means the tail must produce more downforce to balance, so the elevator has to work harder to achieve the same pitch change. In practical terms, the control forces you feel on the wheel increase—the elevator feels heavier. Because the elevator is less effective at countering nose-down tendency with a forward CG, you can't as easily raise the nose to reduce angle of attack as you approach the stall. To maintain level flight, you generally need a higher airspeed, so the stall occurs at a higher indicated airspeed. At the same time, the forward CG increases longitudinal stability, helping the aircraft return to the trimmed attitude after a disturbance. So, with a forward CG, elevator feel is heavier, stall speed is higher, and longitudinal stability increases.

A forward center of gravity makes the airplane more statically stable in pitch. That nose-forward mass also means the tail must produce more downforce to balance, so the elevator has to work harder to achieve the same pitch change. In practical terms, the control forces you feel on the wheel increase—the elevator feels heavier.

Because the elevator is less effective at countering nose-down tendency with a forward CG, you can't as easily raise the nose to reduce angle of attack as you approach the stall. To maintain level flight, you generally need a higher airspeed, so the stall occurs at a higher indicated airspeed. At the same time, the forward CG increases longitudinal stability, helping the aircraft return to the trimmed attitude after a disturbance.

So, with a forward CG, elevator feel is heavier, stall speed is higher, and longitudinal stability increases.

Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy