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I was trying flightgear simulator since I am not a pilot (but have completed ground school) and one thing I have noticed is that the P-Factor increases with thrust applied whether taking off or in cruise flight.

Is this realistic? Does P-Factor vary based on thrust?

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Yes, it should. In the end, p-factor is just a funny word for the out-of-center shift of the thrust vector, and if the vector is larger, the effect should be equally larger.

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YES! In fact P -Factor is the asymmetric thrust that the propellers generate at increased AoA(Angles Of Attack). In other words P-factor is the asymmetric disk loading.

Thrust and P-factor

For the majority of single engine aircraft, this means that the aircraft will yaw to the left at high angles of attack unless an appropriate right rudder alteration is applied.

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