The dual-bell nozzle is an innovating-technology of Rocket Nozzles; it is one of the most promising concepts for the altitude-compensating nozzles. Indeed, the flow in this type of nozzle has the ability to auto-adapting for both operating modes (at low and high altitude) without mechanical activation. The principle is theoretically simple but structural forces involved can be significant. In this study, a numerical method for the design of this type of nozzle is developed. To start the calculation, an initial line is generated using the sonic-line calculation method. Then the inverse method of characteristics is applied to generate the base nozzle profile. The nozzle extension contour is calculated to give a constant wall pressure. This is achieved by using the direct method of characteristics applied for a centered expansion wave (Prandtl-Meyer wave) that the intensity is P2/P1 at the junction. As the profile is generated, a study of the thermodynamic-parameters evolution (pressure, Mach number, temperature, density…) and aerodynamic performances (thrust, specific impulse…) is conducted. The obtained-results are compared to those of studies that have been done by: the National Office of Studies and Aerospace Research (ONERA-France) and the National Space Research Center (CNRS). However it is important to know that the comparison of different configurations (Ideal, TIC and Dual-Bell) is made in terms of performances and weight. This comparison was satisfactory sight the results agreement.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Design and performances of the dual-bell nozzle


    Beteiligte:
    Toufik, Hamitouche (Autor:in) / Mohamed, Sellam (Autor:in) / Hakim, Kbab (Autor:in) / Said, Bergheul (Autor:in) / Lynda, Lagab (Autor:in)


    Erscheinungsdatum :

    2016-03-01


    Format / Umfang :

    1218420 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Dual-Bell Nozzle Design

    Génin, Chloé / Schneider, Dirk / Stark, Ralf | Springer Verlag | 2020

    Freier Zugriff

    The Dual-Bell (DB) Nozzle

    Tucker, Paul K. | NTRS | 2014


    Design Criterion of the Dual-Bell Nozzle Contour

    Otsu, Hirotaka / Miyazawa, Masafumi / Nagata, Yasunori | AIAA | 2005



    Design and performance evaluation of a dual bell nozzle

    Kbab, H. / Sellam, M. / Hamitouche, T. et al. | Elsevier | 2016