Consider an airplane cruising at altitude of 10 km where standard atmospheric conditions are -50°C and 26.5 kPa at a speed of 800 km/h. Each wing of the airplane can

be modeled as a 25-m x 3-m flat plate, and the friction coefficient of the wings is o.0016. Using the momentum-heat transfer analogy, determine the heat transfer coefficient for the wings at cruising conditions.