The downwash along the wing in the downward direction in Prandtl’s lifting line theory comes from______(a) Bound vortex(b) Horseshoe vortex(c) Free vortex(d) Trailing vorticesI got this question in quiz.My question comes from Prandtl’s Classical Lifting-Line Theory topic in division Flow over Airfoils over Finite Wing of Aerodynamics

The downwash along the wing in the downward direction in Prandtl’s l

1.	The downwash along the wing in the downward direction in Prandtl’s lifting line theory comes from______(a) Bound vortex(b) Horseshoe vortex(c) Free vortex(d) Trailing vorticesI got this question in quiz.My question comes from Prandtl’s Classical Lifting-Line Theory topic in division Flow over Airfoils over Finite Wing of Aerodynamics
Answer» The CORRECT ANSWER is (d) Trailing vortices To explain I would say: The bound vortex does not induce any VELOCITY ALONG itself. The downwash along the bound vortex (WING) comes from the two trailing vortices. Thus, horseshoe is also an incorrect option.

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