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(Solved): (a) Sketch a finite wing in a uniform flow. Draw on the diagram the approximate circulation distri ...
(a) Sketch a finite wing in a uniform flow. Draw on the diagram the approximate circulation distribution. Explain how trailing edge vortices are formed and how this relates to the production of induced drag. [5 Marks] (b) Describe in your own words how a two-dimensional airfoil creates lift. Describe how a bound vortex can be used to model the production of lift. [5 Marks] (c) Explain how the majority of drag is produced on an unstalled airfoil. [5 Marks] (d) Explain how the majority of drag is produced on a bluff body. [5 Marks]
Expert Answer
a) The higher-pressure air below a wing spills up over the wing tip into the area of lower-pressure air above. The wing's forward motion spins this upward spill of air into a long spiral, like a small tornado, that trails off the wing tip. These wing