A scale model of an airplane wing section is tested in a wind tunnel at a Mach number of 1.5. The air pressure and temperature in the test section are 20,000 N/m2 and ??30?C, respectively. If the wing section is to be kept at an average temperature of 60?C, determine the rate of cooling required. The wing model may be approximated by a flat plant of 0.3 length in the flow direction.GIVENHigh speed air flow over an airplane wing sectionMach number (M??) = 1.5Air pressure (P) = 20,000 N/m2Air temperature = ??30?C = 243 KAverage wing surface temperature = 60?C = 333 KWing may be approximated as a flat of length (L) = 0.3m

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Air M= 1,5 T.=-30°C 60°C L-0.3 m