A model of a plane is built to a scale of 1/14 and is tested ina wind tunnel.
If the plane is designed to travel at 800 km/h at an altitude of5 km, determine the required density of the air in the wind tunnelso that the Reynolds and Mach numbers are the same. Assume thetemperature is the same in both cases and the speed of sound in airat this temperature is 340 m/s. Ïp = 0.7364 kg/m3at an altitude of 5 km.
