Question

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 oC. If the characteristic length of the airfoil is L-2m and wind tunnel measurements indicate an average friction coefficient of Cf=0.0025 for the nominal conditions, what is the average heat flux needed to maintain a surface temperature of Ts-14 oC? Prescribed air conditions: v-163x106 m2/s. Pr-0.72, k 0.023 WmK Heat flux = W/m2

Answer 1

2- 6 VL 12.27 x10 2- 0.0025 12, 2구x10