Calculate the local heat transfer coefficient that may be expected to occur at a point 30 cm behind the leading edge of the fi n of a supersonic plane travelling at M = 2 at (a) sea level (p =...

Calculate the local heat transfer coefficient that may be expected to occur at a point 30 cm behind the leading edge of the fi n of a supersonic plane travelling at M = 2 at (a) sea level (p = 1.01325 bar, T = 15°C), (b) 7000 m altitude (p = 0.46 bar, T = –10°C). The surface to be maintained is at 95°C in both cases. What is the equilibrium surface temperature to be expected in each case if no internal cooling is provided? What is the amount of cooling necessary to keep the surface at 95°C in each case?