PPL Aerodynamics questions with correct answers
What are the four forces that act on an airplane in flight? - Answer thrust (forward) Drag (Backwards) Lift (Up) Weight (Down) When are the 4 forces that act on an airplane in equilibrium? - Answer During unaccelerated flight What is the relationship between the forces on an airplane? - Answer thrust = drag lift = weight Bernouli's Law/Principle - Answer Air travels faster over curved upper surface which causes lower pressure on the top of the surface (high pressure under the wing, low pressure above the wing) Acute angle A - Answer Angle of attack Critical Angle of attack - Answer The angle of attack at which an airfoil stalls (loses lift) regardless of the aircraft's airspeed, attitude, or weight. Angle of attack - Answer "Acute angle A" the angle between the chord line of the wing and relative w
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