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Why is elliptical wing most efficient?
Elliptical Wing The elliptical wing is aerodynamically most efficient because elliptical spanwise lift distribution induces the lowest possible drag.
How does the elliptical wing work?
An elliptical wing is a wing planform whose leading and trailing edges each approximate two segments of an ellipse. It is not to be confused with annular wings, which may be elliptically shaped.
Which is wing shape has the lowest induced drag?
So an elliptical wing planform has the lowest amount of induced drag and all other wing shapes have higher induced drag than an elliptical wing. For a rectangular wing, the efficiency factor is equal to .7. For many years, wing designers have attempted to reduce the induced drag component by special shaping of the wing tips.
Why was the elliptical wing chosen for the airplane?
The elliptical wing was decided upon quite early on. Aerodynamically it was the best for our purpose because the induced drag caused in producing lift, was lowest when this shape was used: the ellipse was theoretically a perfection To reduce drag we wanted the lowest possible thickness-to-chord, consistent with the necessary strength.
Which is lighter elliptical wing or elliptical lift distribution?
That means that wings with more span and a more triangular lift distribution will be lighter, thus needing less lift and, consequently, producing even less induced drag than that elliptical wing. This was shown by Ludwig Prandtl in 1932 and R.T. Jones in 1950.
What is the efficiency factor of an elliptical wing?
The efficiency factor e is equal to 1.0 for an elliptic distribution and is some value less than 1.0 for any other lift distribution. So an elliptical wing planform has the lowest amount of induced drag and all other wing shapes have higher induced drag than an elliptical wing. For a rectangular wing, the efficiency factor is equal to.7.