Air enters a converging section where (A_{1}=0.50 mathrm{~m}^{2}). At a downstream section, (A_{2}=) (0.25 mathrm{~m}^{2}, M_{2}=1.0), and

Question:

Air enters a converging section where $A_{1}=0.50 \mathrm{~m}^{2}$. At a downstream section, $A_{2}=$ $0.25 \mathrm{~m}^{2}, M_{2}=1.0$, and $\Delta s_{1-2}=0$. It is known that $p_{2}>p_{1}$. Find the initial Mach number $\left(M_{1}\right)$ and the temperature ratio $\left(T_{2} / T_{1}\right)$.

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