Consider the intersection of two shocks of opposite families, as sketched in Fig. 4.23. For (M_{1}=3, p_{1}=1

Question:

Consider the intersection of two shocks of opposite families, as sketched in Fig. 4.23. For $M_{1}=3, p_{1}=1 \mathrm{~atm}, \theta_{2}=20^{\circ}$, and $\theta_{3}=15^{\circ}$, calculate the pressure in regions 4 and $4^{\prime}$, and the flow direction $\Phi$, behind the refracted shocks.

Figure 4.23:
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