Conformal ablators are low-density composite materials comprising a flexible fibrous substrate and polymer matrix. Recent advancements have improved the efficiency of conformal ablator fabrication through vacuum infusion processing, which injects resin into a fiber substrate enclosed in a matched mold under vacuum. A conceptual design methodology was developed combining a Darcy’s law simulation of the mold filling process with optimal tile layout and material property estimation. The framework allows rapid evaluation of changes to constituent materials, process parameters, and heat-shield geometry, and their impact on manufacturing and material properties. Results for a 4.5 m, 70 deg sphere-cone aeroshell demonstrate the advantages of the integrated approach. The mold filling simulation is then compared with experimental results.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Numerical Methodology for the Conceptual Design of Conformal Ablative Heat Shields


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.07.2020




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Ablative heat shields for planetary entry vehicles.

    Sparhawk, H. E. / Strauss, E. L. | NTRS | 1968


    Substructure heating on cracked ablative heat shields

    HUMPHREY, R. L. / KOENIG, J. A. | AIAA | 1970




    Low Cost Ablative Heat Shields for Space Shuttles

    A. M. Cecka / R. E. Dulak | NTIS | 1970