Left Turning tendencies

Question 1

What causes left turning tendencies

Answer 1

• High power
• High angle of attack
• Low airspeed
• Dirty configuration

Question 2

4 types of left turning tendencies

Answer 2

Torque Reaction
gyroscopic precession
Spiraling slipstream
Asymmetric blade effect or P-factor

Question 3

Torque reaction

Answer 3

Newton’s third law of motion - for every action, there is an equal and opposite reaction

Body of an airplane reacts opposite to the torque effect of the direction of propeller

Question 4

Gyroscopic precession

Answer 4

• Is the resultant reaction when a force is applied to the rim of rotating disc. The Reaction to a force applied to a gyro
  acts in the direction of rotation approximately 90 degrees ahead of the point where force is applied.
• The effects of precession can only be felt when the attitude of the aircraft is changed

Question 5

Spiraling slipstream

Answer 5

• A clockwise rotating propeller (as seen from the cockpit view) will impart a clockwise rotation to the slipstream
  as it flows back over the airplane, following a corkscrew path. This causes an asymmetric airflow over the vertical stabilizer and rudder.

Question 6

Asymmetric propeller blade effect (P-factor)

Answer 6

• When an aircraft is flying with a high AOA, the “bite” of the downward moving blade is greater than the “bite” of the upward moving blade.