Lecture Notes on Torque, Gyroscopic Effects and P-Factor

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Flashcards reviewing key concepts related to torque, gyroscopic effects, and P-factor in aircraft.

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10 Terms

1
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How does torque affect angular momentum?

Torque increases the angular momentum of an object in the direction of the torque.

2
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How is torque calculated?

Torque is force times the distance from the rotating axis (radius).

3
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How do you determine the direction of torque?

Use the right-hand rule: point fingers in the direction of the radius, curl them in the direction of the force, and the thumb points in the direction of the torque.

4
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What happens to the angular momentum of a wheel when a torque is applied?

The angular momentum of the wheel is increased in the direction of the torque.

5
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In a wheel hanging from one side, what force creates a torque?

The weight of the wheel pulling down, applied at a distance from the pivoting point.

6
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What is the effect of gyroscopic precession?

When a force is applied, the resulting force takes effect 90 degrees ahead of and in the direction of rotation.

7
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What is P-factor (asymmetric propeller loading)?

P-factor is when one side of the propeller has more bite to the air than the other, typically the downward moving blade.

8
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What is the effect of P-factor?

More thrust is generated on one side of the propeller, creating a force that tends to pull the aircraft to the left.

9
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What are the four left-turning tendencies?

Torque, corkscrewing effect of the slipstream, gyroscopic precession, and P-factor.

10
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Why is right rudder needed during takeoff?

To counteract the combined effects of the left-turning tendencies.