Left-Turning Tendencies
Definition
Four forces that cause a single-engine propeller aircraft to yaw or roll left: torque, P-factor, gyroscopic precession, and spiraling slipstream. Most pronounced at high power and low airspeed.
Why Left-Turning Tendencies Matters for Pilots
Understanding Left-Turning Tendencies is critical for passing the FAA Private Pilot Knowledge Test and performing safely in flight. Aerodynamics questions make up a significant portion of both written exams and oral checkrides. Pilots who grasp concepts like Left-Turning Tendencies can make better decisions during all phases of flight, from takeoff to landing.
Exam Tip
This concept is commonly tested in aerodynamics-related questions on FAA and EASA exams. Make sure you can explain Left-Turning Tendencies in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
Related Terms
P-Factor(P-factor)
Asymmetric propeller thrust that causes yaw, most noticeable at high power and h...
Torque Effect
The reaction force to propeller rotation that tends to roll the aircraft in the ...
Gyroscopic Precession
A property of spinning bodies where an applied force is felt 90 degrees later in...
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