Getting to the details now...

Figure 1 shows the line of fire image using the measured aerodynamic values. The profile of the lift coefficients of the body and tail on the angle of attack was known and would have given intolerable resistance at the Mach numbers of the A-4.

  Fig. 1

Thus a very large angle of attack, with intolerable resistance and unfavorable lateral force distribution, would have been necessary for the Wasserfall rocket. Finally a requirement  was identified for a subsonic angle of attack of 15^o and a supersonic angle of attack of 8^o.