Supersonic ejector-diffuse systems have application in driving an advanced airbreathing propulsion system, consisting of turbojet engines acting as the primary and a single throat ramjet acting as the secondary. The turbojet engines are integrated into the single throat ramjet to minimize variable geometry and eliminate redundant propulsion components. The result is a simple, lightweight system that is operable from takeoff to high Mach numbers. At this high Mach number (approximately Mach 3.0), the turbojets are turned off and the high speed ramjet/scramjet take over and drive the vehicle to Mach 6.0. The turbojet-ejector-ramjet system consists of nonafterburning turbojet engines with ducting canted at 20 degrees to supply supersonic flow (downstream of CD nozzle) to the horizontal ramjet duct at a supply total pressure and temperature. Two conditions were modelled by a 2-D full Navier Stokes code at Mach 2.0. The code modelled the Fabri choke as well as the non-Fabri non critical case, using a computational throat to supply the back pressure. The results, which primarily predict the secondary mass flow rate and the mixed conditions at the ejector exit were in reasonable agreement with the 1-D cycle code (TBCC).


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    A CFD Study of Turbojet and Single-Throat Ramjet Ejector Interaction


    Contributors:
    Chang, Ing (author) / Hunter, Louis (author)


    Publication date :

    1996-07-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Integration of the Turbojet and Single-Throat Ramjet

    C. J. Trefny / T. J. Benson | NTIS | 1995


    An Integration of the Turbojet and Single-Throat Ramjet

    Trefny, C. J. / Benson, T. J. | NTRS | 1995


    Supercharged ejector ramjet

    Rosevear, Jerry | NTRS | 1992


    Supercharged Ejector Ramjet

    J. Rosevear | NTIS | 1992


    Conceptual study of a turbojet/ramjet inlet

    Weidner, John P. | TIBKAT | 1979