Principles of Flighthard#598
Circulation theory (Kutta-Joukowski) states that lift per unit span equals:
A
L = CL × ½ρV² × S
B
L' = ρ × V × Γ (density × velocity × circulation)
CorrectC
L = m × g
D
L = F × d
Explanation
The Kutta-Joukowski theorem shows that lift per unit span is proportional to air density, free-stream velocity, and the circulation (Γ) around the airfoil.
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