What is the net aerodynamic force that is parallel to the relative wind, composed of induced drag and parasite drag?

The net aerodynamic force that is parallel to the relative wind and consists of induced drag and parasite drag is referred to as drag. Drag is a resistive force that opposes the forward motion of an aircraft through the air. It is made up of two main components: induced drag, which arises from the generation of lift and increases with angles of attack, and parasite drag, which is related to the aircraft's shape and surface characteristics and increases with airspeed.

Understanding drag is crucial for pilots, as it directly influences aircraft performance and fuel efficiency. By managing drag through various means such as aerodynamic design, speed control, and configuration changes, pilots can optimize their flight operations.