The EMET concept is a marriage of electrothermal plasma jet technology with rail accelerators using plasma armatures. By injecting a structured plasma immediately behind a moving projectile prior to the current pulse, the plasma armature properties can be highly controlled. Parameters of interest are the armature mass and length, molecular weight, specific heat ratio gamma, and temperature. Proper control of these parameters leads to control of problems facing rail launchers as wall ablation and viscous wall drag. In support of EMET, a Material Test Facility (MTF) has been developed for performing basic physics and materials research on hypervelocity launchers, by making direct measurements of the plasma pressure and jet velocity in a 1 cm bore. These measurements are then compared with theoretical models for various types of plasmas, in order to understand and eliminate barrel ablation. The paper discusses measurement techniques used on MTF, and the approaches being taken to develop EMET in the laboratory.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    EMET technology for rail launchers


    Weitere Titelangaben:

    EMET-Technologie fuer elektromagnetische Kanonen


    Beteiligte:
    Burton, R.L. (Autor:in) / Goldstein, S.A. (Autor:in) / Tidman, D.A. (Autor:in) / Wang, S.Y. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1986


    Format / Umfang :

    6 Seiten, 13 Bilder, 2 Tabellen, 3 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    The EMET railgun projectile

    Burton, R.L. / Witherspoon, F.D. / Goldstein, S.A. | Tema Archiv | 1991


    Physics experiments on the GEDI EMET facility

    Witherspoon, F.D. / Burton, R.L. / Goldstein, S.A. | Tema Archiv | 1989


    Technology demonstration for reusable launchers

    Baiocco, P. / Bonnal, Ch. | Elsevier | 2015


    Rail and armature current distributions in electromagnetic launchers

    Young, F.J. / Hughes, W.F. | Tema Archiv | 1982


    LAUNCHERS

    JUN DAE KEUN / HWANG JIN HA / LEE HYE KWANG et al. | Europäisches Patentamt | 2019

    Freier Zugriff