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Downwash for an elliptic wing circulation distribution is constant.(a) True(b) FalseI got this question in semester exam.Query is from Prandtl’s Classical Lifting-Line Theory topic in division Flow over Airfoils over Finite Wing of Aerodynamics |
Answer» CORRECT OPTION is (a) True The best EXPLANATION: For an elliptic distribution of lift over the SPAN of a wing, downwash is a constant. This can be calculated from Biot-Savart law and using substitution to REVEAL that downwash is a constant along the span. |
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