Consider hypersonic flow over an infinitely thin, flat plate. The zero-lift drag coefficie...

Consider hypersonic flow over an infinitely thin, flat plate. The zero-lift drag coefficient is denoted by C_D,0. (Note that the zero-lift drag for a flat plate is entirely due to skin friction.) Consider that the wave drag coefficient is given by the Newtonian result for drag coefficient—that is, by Eq. (10.12). Also assume that the lift coefficient is given by the Newtonian result in Eq. (10.11). We wish to examine some results associated with (L/D)_max for this flat plate. Because (L/D)_max occurs at a small angle of attack, make the assumption of small α in Eqs. (10.11) and (10.12). Under these conditions, show that at maximum L/D, (a)  and occurs at  and (b) the wave drag coefficient = 2CD,0.