Question: In order to estimate the drag force on an airplane wing, model the wing as a half-cylinder for the leading edge and as two flat plates for the upper and lower surfaces. Estimate the drag force for a wing approximately 15 cm thick, 10 m long and 2 m wide on an airplane traveling at 100 m/s in air at 0°C. The density of the air is 1.3 kg/m3 and viscosity is .023 CP at this temperature.