Abstract Conceptual design studies performed with reduced-order approaches allow feasibility and sizing considerations of air-breathing engines to be configured at an affordable computational cost. The present study is devoted to exploring the design space of a dual-mode ramjet engine operating in scramjet mode by means of reduced-order analysis to assess the effects of propulsive system design configurations on component level and overall performance characteristics. The approach proposed in this work combines axisymmetric flow configuration used for the design of supersonic/hypersonic intakes and solutions of one-dimensional flow governing equations coupled with finite-rate chemistry and thermophysical properties tables in the numerical domains of the combustor and nozzle components. The scramjet design space is generated by varying parameters which are flight Mach number and altitude, intake truncation angle, intake exit Mach number and equivalence ratio. Performance outputs of total pressure recovery factor, compression ratio, captured air mass flow rate, intake startability index, thrust, specific impulse, fuel consumption and overall efficiency are computed for each design scenario. The generated database is visualized via performance maps and analyzed in terms of propulsive characteristics. A feature importance study is also conducted to quantify the effects of design parameters on the propulsive performance.

    Highlights Reduced-order modeling of propulsion systems decreases the complexity of analysis. Scramjet design space consists of thermal choking, non-ignition, and propulsive zones. Uninstalled thrust strongly depends on combustor inlet and cruise Mach numbers. Total pressure recovery is the dominant factor dictating the intake efficiency. Low speed flow at burner inlet yields autoignition but may cause thermal choking.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Design space investigations of scramjet engines using reduced-order modeling


    Beteiligte:

    Erschienen in:

    Acta Astronautica ; 217 ; 349-362


    Erscheinungsdatum :

    2024-01-28


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Reduced-Order Modeling of Reacting Supersonic Flows in Scramjet Nozzles

    Dalle, Derek / Fotia, Matthew / Driscoll, James | AIAA | 2010


    Reduced-Order Analysis of Scramjet Inlet Operation

    Gopal, Vijay / Wilson, Donald | AIAA | 2016



    Scramjet isolator modeling using Reduced Navier-Stokes equations

    Hagenmaier, Mark / Sekar, Balu | AIAA | 1997


    Active cooling design for scramjet engines using optimization methods

    SCOTTI, STEPHEN / MARTIN, CARL / LUCAS, STEPHEN | AIAA | 1988