The Smart Radiation Device (SRD) is a thin and light tile whose infrared emissivity is varied proportionally by the temperature of the radiator. Bonded only to the external surface of the spacecraft’s instruments, it controls the heat radiated to deep space without electrical or mechanical instruments used for changing emissivity. Its function is similar to the thermal louver which has been used for a lot of spacecraft, but the SRD is lighter than it. Thus, by using this new device, we can control the temperature of the instruments on the spacecraft more easily. The materials of the SRD are La0.825Sr0.175MnO3 and La0.7Ca0.3MnO3.In this paper, design and preliminary test results of the SRD will be presented. The optical properties for the materials of the SRD, such as the total hemispherical emittance and the solar absorptance, have been measured. In addition the degradation by protons has been investigated.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Development of a Variable Emittance Radiator, 1999


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Ohnishi, Akira (Autor:in) / Okamoto, Akira (Autor:in) / Ochi, Atsushi (Autor:in) / Shimazaki, Kazunori (Autor:in) / Tachikawa, Sumitaka (Autor:in) / Manako, Takashi (Autor:in) / Mori, Toru (Autor:in) / Nakamura, Yasuyuki (Autor:in) / Shimakawa, Yuichi (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 1999



    Erscheinungsdatum :

    1999-07-12




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Development of a Variable Emittance Radiator

    Okamoto, A. / Nakamura, Y. / Ochi, A. et al. | British Library Conference Proceedings | 2002


    Development of a Variable Emittance Radiator, 1995

    Natusch, Andreas / Huchler, Markus / Rothmund, Walter | SAE Technical Papers | 1995


    New concept of space radiator with variable emittance

    Vlassov, Valeri V. / Sousa, Fabiano Luis de / Cuco, Ana Paula C. et al. | Tema Archiv | 2010


    Development of a Variable Emittance Radiator Based on a Perovskite Manganese Oxide

    Sumitaka Tachikawa / Akira Ohnishi / Yuichi Shimakawa et al. | AIAA | 2003


    Development of a Variable Emittance Radiator Based on a Perovskite Manganese Oxide

    Tachikawa, Sumitaka / Ohnishi, Akira / Shimakawa, Yuichi et al. | AIAA | 2002