Calculate the maximum lift to drag ratio for a business jet wit... | Filo

The ratio of lift to drag L D for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. If a wing is pitched through a range of angle of attack, L D first increases, then goes through a maximum, and then decreases. Consider an infinite wing with an NACA 2412 airfoil. Estimate the maximum value of L / D. Assume that the Reynolds number is 9 ×10^6. | Numerade

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SKY FIGHTERS CLUB on Instagram: "General Dynamics' F-16XL was a study in efficient geometry, a cranked-arrow "big" wing stretched the F-16's planform to gain lift, fuel and payload without redesigning the entire airplane. Two prototypes flew (first flight 3 July 1982), proving a much smoother, high-speed ride and far greater payload-range flexibility than the baseline F-16. Aerodynamically the XL delivered measurable gains, about a 25% improvement in lift-to-drag ratio at supersonic cruise and m