As a means of preventing ice formation on the wings of a small, private aircraft, it is proposed that electric resistance heating elements be installed within the wings. To determine representative power requirements, consider nominal flight conditions for which the plane moves at 100 m/s in air that is at a temperature of -23°C and has properties of k = 0.022 W/m ∙ K, Pr = 0.72, and v = 16.3 X 10-6 m2/s. If the characteristic length of the air foil is L = 2 m and wind tunnel measurements indicate an average friction coefficient of 0 = 0.0025 for the nominal conditions, what is the average heat flux needed to maintain a surface temperature of Ts = 5°C?