Efficient high speed propulsion requires exploiting the cooling capability of the cryogenic fuel in the propulsion cycle. This paper presents the numerical model of a combined cycle engine while in air turbo-rocket configuration. Specific models of the various heat exchanger modules and the...

Air-breathing engines are utilized in the hypersonic regime through thermal integration of the fuel into the propulsive cycle, which improves the efficiency by recovering thermal energy from the freestream and the aeroshell. The classical efficiency figures based on First Principle analyses are...