Asymmetric thrust is also known as what?

• A. P-factor
• B. Induced lift
• C. Co-variation
• D. Gyroscopic precession

Answer: (A)

Asymmetric thrust happens because a propeller doesn’t produce equal thrust on both sides of its rotation. The blade moving downward encounters the air at a higher angle of attack than the blade moving upward, so that downward-moving side develops more thrust. The net result is a yaw tendency toward the down-going blade. This specific imbalance is called P-factor.

Induced lift describes lift generated by a wing due to wing aerodynamics, not thrust distribution on a propeller. Gyroscopic precession is about how a spinning rotor responds when it’s torque-driven, not about thrust asymmetry. Co-variation isn’t a term used for this phenomenon.