Drag
Definition
The aerodynamic force opposing the motion of an aircraft through the air. Drag has two main components: parasite drag (form, skin friction, interference) and induced drag (a byproduct of lift generation).
Why Drag Matters for Pilots
Understanding Drag is critical for passing the FAA Private Pilot Knowledge Test and performing safely in flight. Aerodynamics questions make up a significant portion of both written exams and oral checkrides. Pilots who grasp concepts like Drag can make better decisions during all phases of flight, from takeoff to landing.
Exam Tip
This concept is commonly tested in aerodynamics-related questions on FAA and EASA exams. Make sure you can explain Drag in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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Angle of Attack(AoA)
The angle between the chord line of an airfoil and the relative wind. As AoA inc...
Lift
The aerodynamic force perpendicular to the relative wind generated by an airfoil...
Parasite Drag
Drag not associated with lift production, including form drag from the aircraft ...
Induced Drag
Drag created as a byproduct of lift generation, caused by wingtip vortices defle...