Critical future space missions demand near-gigawatt bursts above multimegawatt maintenance levels. These requirements favor space nuclear reactors feeding thermionic energy conversion. With such power systems very high operating temperatures facilitate radiated waste-heat rejection. Operation at thermal maxima also enables utilization of collision less and oscillating thermionic conversion as well as the conventional arc mode. For all this, advanced-technology ultraalloys based on the maximetal tungsten are essential. And in that vein a promising ultralloy approach combines multipurpose modifiers in eutectics that activate tungsten sintering. Resulting ultralloys comprise tungsten and low-concentration dissolved, reacted, precipitated and/or dispersed refractory additives. Appropriate alloy combination improve not only tungsten performance but also its processing ease, control and effectiveness. Description of these ultralloys and of the improvements they allow in high-temperature thermionic conversion for nuclear space power comprises this presentation.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Thermionic conversion and alloys for high-temperature nuclear space power


    Weitere Titelangaben:

    Thermionische Umwandlung und Legierungen fuer die nukleare Hochtemperatur-Weltraumenergie


    Beteiligte:
    Morris, J.F. (Autor:in) / Jacobson, D.L. (Autor:in)


    Erscheinungsdatum :

    1988


    Format / Umfang :

    5 Seiten, 20 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Nuclear Reactor-Thermionic Space Power Systems

    Snyder, Nathan W. | AIAA | 1961


    High-temperature alloys for high-power thermionic systems. Final report

    Shin, K.S. / Jacobson, D.L. / D'Cruz, L. et al. | Tema Archiv | 1990



    Experimental Investigation of High Temperature High Voltage Thermionic Diode for the Space Power Nuclear Reactor

    Onufriyev, V. V. / Institute for Space and Nuclear Power Studies | British Library Conference Proceedings | 2001