Aerospace radioisotope heater technology has been developed through analysis and testing of improved containment and ablation materials and configurations. To best meet the widest application range, an unvented Pu-238 sphere/cube heater in two power sizes, 5 and 50 W(th), is recommended. The critical design constraint is helium pressure containment during reentry for up to 20 years. An ATJ-S graphite ablator combined with a heat-treated pyrolytic-graphite insulator wrapped around a T-111/Pt - 20 wt% Rh capsule is the optimum configuration using current technology. A HfB2 composite currently being developed would provide a major reduction in ablation rates.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Improved technology for multiwatt radioisotope heater units


    Weitere Titelangaben:

    Verbesserte Technologie fuer Multiwatt-Radioisotopenbatterien


    Beteiligte:
    Barsell, A.W. (Autor:in) / Goranson, R.B. (Autor:in) / Clements, P.R. (Autor:in)

    Erschienen in:

    Nuclear Technology ; 19 , 2 ; 117-125


    Erscheinungsdatum :

    1973


    Format / Umfang :

    9 Seiten, 6 Bilder, 2 Tabellen, 9 Quellen


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Coated Particle Fuel for Radioisotope Power Systems (RPSs) and Radioisotope Heater Units (RHUs)

    Sholtis, J. A. / Lipinski, R. J. / El-Genk, M. S. et al. | British Library Conference Proceedings | 1999


    Coated particle fuel for radioisotope power systems (RPSs) and radioisotope heater units (RHUs)

    Sholtis, Joseph A. / Lipinski, Ronald J. / El-Genk, Mohamed S. | American Institute of Physics | 1999


    Radioisotope heater unit

    Tsuyuki, G. T. | NTRS | 2002