Aerospace Engineering > GATE 2025 > Lift and Drag
A lifting surface has a spanwise circulation distribution of Γ(θ)=A sin 3θ (where A≠0) over its span -b/2 ≤ y ≤ b/2, and y=-(b/2)cos θ is the spanwise coordinate.
Furthermore, the downwash varies along the span as ω(θ)=V(3A sin 3θ / sin θ). where V is the freestream velocity.
Which one of the following options represents the total lift (L) and induced drag (Di)?
A
L=0 and Di=0
B
L=0 and Di≠0
C
L≠0 and Di=0
D
L≠0 and Di≠0

Correct : b

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