What type of drag increases with airspeed?

Induced drag is the type of drag that increases with airspeed, but it's important to understand the context in which this occurs. Induced drag is primarily associated with lift. As an aircraft flies at low speeds, the angle of attack increases to generate lift, which leads to a higher amount of induced drag due to the vortex system created by the wings. Conversely, as the aircraft increases its airspeed, the angle of attack can be reduced while still maintaining lift, and the total induced drag decreases.

However, if we focus on a scenario where the airspeed is increased significantly, the lift generated by the wings also increases, which eventually causes an increase in induced drag as the aircraft approaches its lift limits. Therefore, induced drag can fluctuate based on speed and associated aerodynamic conditions.

Skin friction drag and form drag are more dependent on surface characteristics and shape rather than speed; while parasite drag, which is a combination of form drag and skin friction drag, generally increases with airspeed but isn't categorized in the same way as induced drag. Induced drag more directly correlates to lift production and ultimately adapts to changes in airspeed as the performance dynamics of the aircraft evolve.