Problem (3): (18 points) A wing with an area of 40 m² and a span of 20 m has an untwisted, elliptic chord distribution a

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Problem 3 18 Points A Wing With An Area Of 40 M And A Span Of 20 M Has An Untwisted Elliptic Chord Distribution A 1 (80.44 KiB) Viewed 13 times

Problem (3): (18 points) A wing with an area of 40 m² and a span of 20 m has an untwisted, elliptic chord distribution and is made from an airfoil with a zero lift angle of attack of -2 degree. Assuming the 2-D lift curve slope is 2n, calculate the following: a) The lift coefficient when flying at an angle of attack of 6 degrees for the finite wing. b) The lift coefficient when flying at an angle of attack of 6 degrees for the infinite wing. c) Which value is bigger part (a) or part (b)? Explain you answer. d) The induced drag for the finite wing. e) The induced drag for the infinite wing.