What is adverse yaw?

Adverse yaw refers to the phenomenon where an aircraft yaws or turns in the opposite direction of the intended turn during the maneuver. This occurs primarily due to differences in drag between the wings. When a pilot initiates a turn by banking the aircraft, the wing that is raised (the outer wing) generates more lift but also more induced drag than the wing that is lowered (the inner wing). As a result, the aircraft tends to yaw towards the wing that is producing less lift and drag, which is the opposite of the desired turn.

Understanding adverse yaw is crucial for pilots as it necessitates the use of coordinated inputs, typically with the rudder, to counteract this unwanted yaw and achieve a smooth turn. This control technique helps maintain the desired flight path and ensures that the aircraft responds as expected during maneuvers.

The other options do not accurately describe adverse yaw. For instance, a turn that requires no rudder input overlooks the necessity of coordination between ailerons and rudder to prevent adverse yaw. Similarly, increased lift and enhanced climb rate are unrelated to the yawing motion experienced during turns.