Question: Obtain an expression for the downward induced velocity behind a wing of span 2s at a point of distance y from the center of span, the circulation around the wing at any point y being denoted Γ. If the circulation is parabolic, that is,
![1452_3.png](https://secure.tutorsglobe.com/CMSImages/1452_3.png)
calculate the value of the induced velocity w at mid-span, and compare it with that obtained when the same lift is distributed elliptically.