Which type of drag increases with an increase in lift and angle of attack?

Induced drag is directly related to the generation of lift in an aircraft. As the angle of attack increases, the wing produces more lift, leading to an increase in induced drag. This type of drag arises from the vortices created at the wingtips due to pressure differences across the wing surfaces. As the lift increases (which occurs with a higher angle of attack), the strength of these vortices also increases, resulting in greater induced drag.

The relationship between induced drag and lift is significant in aerodynamic performance, especially at lower speeds and higher angles of attack, where a pilot may require more lift to maintain controlled flight. This means that as you climb or turn and increase the angle of attack to sustain or gain altitude, the induced drag will correspondingly rise. Understanding this relationship is crucial for pilots to manage performance and fuel efficiency during flight maneuvers.

In contrast, parasite drag, profile drag, and form drag do not directly increase with lift or angle of attack in the same way induced drag does. These types of drag are more associated with an aircraft's speed and shape rather than the lift produced by the wings at higher angles of attack.