The CF$6$ is a popular turbofan engine, developing $220$ to $320$ KN of thrust. It powers the Airbus A$300,$ A$310$ and A$330,$ and the Boeing $747,767,$ DC$-10$ and MD$-11.$ Four CF$-6$ Turbofan Engines Power a Boeing $747.$A CF$-6$ Turbofan engine has the following data: Assuming an operational altitude where $P_0=25$kPa&$T_0=217.$ Also assume that the exit pressures of the cold and hot streams are equal to the ambient pressure and assume the gas is air with $=1\mathrm{.}4,C_p=1\mathrm{.}005K\frac{J}{k}g.K$ and $R=0\mathrm{.}287K\frac{J}{k}g.K.$