^((3)/(5))An ideal ramjet engine (see Fig. P3.5) is operated at 50,000 -ft altitude with a flight Mach number of 3. The diffuser and nozzle are assumed to be isentropic, and the combustion is modeled as an ideal heat interaction at a constant Mach number with constant total pressure. The cross-sectional area and Mach number for certain engine stations are given in Table P3.1. The total temperature leaving the