The science objectives of increasingly ambitious space missions require meeting stringent contamination requirements. Contamination transport models are based on established principles such as Fick's law for contamination diffusion within the source material, Arrhenius factors to account for temperature variations and free molecular transport for spacecraft operating in vacuum. In addition to the science principles, empirical data obtained from ASTM E1559 testing is used for engineering contamination modeling. The ASTM E1559 test provides outgassing rate data for materials at expected spacecraft temperatures during a mission. Multiple quartz crystal microbalances (QCMs) can be operated at different temperatures to measure the amount of contamination condensation that can occur on various spacecraft surfaces. At the conclusion of the ASTM E1559 test a thermo-gravimetric assessment (TGA) can be performed by heating the QCMs at a linear rate to obtain contamination desorption data. This TGA data provides a wealth of information that can be incorporated into contamination models. A method for applying this data is presented.


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    Titel :

    A Method for Incorporating Quartz Crystal Microbalance Thermo-Gravimetric Assessment Data in Contamination Modeling


    Beteiligte:


    Erscheinungsdatum :

    2022-03-05


    Format / Umfang :

    1147626 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    ATS-6 - Quartz-Crystal Microbalance

    Rogers, J. F. | NTRS | 1975


    ATS-6 Quartz-Crystal Microbalance

    Rogers, John F. | IEEE | 1975



    Vacuum Thermo-Gravimetric Analyser

    Sapezanskaia, I. / Blaauw, H. / Semprimoschnig, C. et al. | British Library Conference Proceedings | 2013