Abstract The thermal subsystem of spacecrafts and payloads is always designed with the help of Thermal Mathematical Models. In the case of the Thermal Lumped Parameter (TLP) method, the non-linear system of equations that is created is solved to calculate the temperature distribution and the heat power that goes between nodes. The accuracy of the results depends largely on the appropriate calculation of the conductive and radiative conductances. Several established methods for the determination of conductive conductances exist but they present some limitations for complex geometries. Two new methods are proposed in this paper to calculate accurately these conductive conductances: The Extended Far Field method and the Mid-Section method. Both are based on a finite element calculation but while the Extended Far Field method uses the calculation of node mean temperatures, the Mid-Section method is based on assuming specific temperature values. They are compared with traditionally used methods showing the advantages of these two new methods.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Accurate calculation of conductive conductances in complex geometries for spacecrafts thermal models


    Beteiligte:
    Garmendia, Iñaki (Autor:in) / Anglada, Eva (Autor:in) / Vallejo, Haritz (Autor:in) / Seco, Miguel (Autor:in)

    Erschienen in:

    Advances in Space Research ; 57 , 4 ; 1087-1097


    Erscheinungsdatum :

    2015-12-17


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    Node Geometries and Conductances in Spacecraft Thermal Models

    Costello, Christopher F. / Costello, Frederick A. | SAE Technical Papers | 1995


    Automatic Computation of Conductive Conductances Intervening in the Thermal Chain

    Desaunettes, B. / Fradin, J. P. | SAE Technical Papers | 1995


    Calculation of linear conductances for thermal lumped models by means of the CMF method

    Piqueras, Javier / Pérez-Grande, Isabel / Sanz-Andres, Angel et al. | Elsevier | 2020