The Airbus A380-300 has a wing span of 79.8 m. The cruise altitude is 10,000 min a
Chapter 8, Problem 8.41(choose chapter or problem)
The Airbus A380-300 has a wing span of 79.8 m. The cruise altitude is 10,000 min a standard atmosphere. Assume you are designing a wind tunnel to operate with air at 20C. The span of the scale model A380 in the wind twmel is 1 m. Assume Mach-number correspondence between model and prototype. Both the speed of sound and the dynamic viscosity vary linearly with the square root of the absolute temperature. What would the pressure of the air in the wind tunnel have to be to have Reynolds-number similitude? Use the properties for a standard atmosphere in Chapter 3 to find properties at 10,000 m altitude.
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