$14.$ A ramjet travels at M$=3\mathrm{.}8$ at an altitude where the temperature is $256$ K and the pressure is $0\mathrm{.}4$ atm. Air flows through the engine at $43$ kg$/$s with a burner exit temperature of $2100$ K$.$ The fuel has a heating value of $46000$ KJ$/$kg$.$ Estimate the fuel$-$air ratio, thrust and TSFC$,$ assuming y$=1\mathrm{.}4.$