In a previous report, scramjet engine characteristics of different propellant feed cycles were compared, and engine performances discussed. In this study, a hydrogen fueled airframe-integrated scramjet was examined, considered the cooling of the airframe as well as the engine, and the dependence of engine characteristics on such parameters as flight Mach number, flight dynamic pressure, engine wall temperature, and engine scale were analyzed. It was found that the coolant required for the airframe is about 20 percent of the total coolant. Simple equations were derived which correlate fuel flow rate, engine overall thrust and specific impulse with those parameters. As for the airframe cooling, a new cycle was proposed in which the airframe cooling system has its own coolant feed system and does not depend on the engine operating conditions.


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    Title :

    Analysis of Scramjet Engine Characteristics


    Contributors:
    T. Kanda (author) / G. Masuya (author) / Y. Wakamatsu (author) / N. Chinzei (author) / A. Kanmuri (author)

    Publication date :

    1989


    Size :

    24 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English