Highlights Radiation shielding effectiveness of materials in HEO was studied. Polyethylene-based radiation shield is lighter than Aluminum shields. The weight saving is significant to merit further investigation.

    Abstract The Canadian Space Agency (CSA) has proposed a Polar Communications and Weather (PCW) satellite mission, in conjunction with other partners. The PCW will provide essential communications and meteorological services to the Canadian Arctic, as well as space weather observations of in situ ionizing radiation along the orbit. The CSA has identified three potential Highly Elliptical Orbits (HEOs) for a PCW satellite constellation, Molniya, Modified Tundra and Triple Apogee (TAP), each having specific merits, which would directly benefit the performance/longevity of a PCW spacecraft. Radiation shielding effectiveness of various materials was studied for the three PCW orbit options to determine the feasibility of employing materials other than conventional aluminium to achieve a specified spacecraft shielding level with weight savings over aluminium. It was found that, depending on the orbit-specific radiation environment characteristics, the benefits of using polyethylene based materials is significant enough (e.g., 22% in Molniya for PE at 50krad TID) to merit further investigation.


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    Titel :

    A comparison of radiation shielding effectiveness of materials for highly elliptical orbits


    Beteiligte:
    Emmanuel, A. (Autor:in) / Raghavan, J. (Autor:in) / Harris, R. (Autor:in) / Ferguson, P. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 53 , 7 ; 1143-1152


    Erscheinungsdatum :

    2013-12-27


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






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