Which of the following is NOT a function of lift?

The function of lift primarily revolves around its role in enabling an aircraft to become airborne and maintain flight. Among the listed options, creating drag is indeed not a function of lift.

Lift serves several critical purposes in aviation. Firstly, it directly opposes the force of gravity, allowing an aircraft to ascend and remain aloft. Additionally, lift is responsible for supporting the overall weight of the aircraft, which is essential for maintaining flight stability. The ability to allow for vertical movement, such as climbing or descending, further defines the purpose of lift in maneuvering an aircraft.

Creating drag, on the other hand, refers to the aerodynamic resistance that opposes an aircraft's forward motion through the air, which is a separate aerodynamic principle. While drag is an important factor in overall flight dynamics and affects performance efficiency, it is not a function of lift itself. Thus, identifying creating drag as not being a function of lift is completely aligned with the fundamental principles of aerodynamics.