What is meant by “asymmetric thrust”?

The term “asymmetric thrust” specifically refers to the difference in thrust generated by two or more engines on an aircraft. When engines produce unequal thrust, it can result in yawing motions, which is the tendency of the aircraft to turn towards the side of the engine producing less thrust. This phenomenon is critical for pilots to understand, especially in multi-engine aircraft, as it directly affects handling and directional control. Managing asymmetric thrust is essential during various phases of flight, particularly during takeoff, landing, and in the event of an engine failure, when the aircraft must compensate for the loss of thrust from one engine with the remaining operational engine(s). This concept is a fundamental part of understanding aircraft performance and control.