This paper describes solar heating test results of a single crystal Mo thruster of solar thermal propulsion (STP) with super high-temperature brazing of Mo/Ru for hydrogen-gas sealing, using the paraboloidal concentrator of 1.6 m diameter newly installed in NAL in the Japan Solar Upper Stage (JSUS) research program. The designed thruster has a target Isp about 800 sec for 2,250 K or higher temperatures of hydrogen propellant. Additionally, tungsten CVD-coating was applied to a outer surface of the thruster in order to prevent vaporization of the wall material and Mo/Ru under the condition of high temperature over 2,500K and high vacuum. Also addressed in our paper is solar thermionic power module design for the integration with the STP receiver. The thermionic converter (TIC) module is of a planar type in a Knudsen-mode operation and provides a high conversion efficiency of 23% at the TIC emitter temperature of nearly 1,850 K for a heat input flux of 24 W/cm2.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    JSUS solar thermal thruster and its integration with thermionic power converter



    Conference:

    Space technology and applications international forum - 1998 ; 1998 ; Albuquerque,New Mexico (USA)


    Published in:

    AIP Conference Proceedings ; 420 , 1 ; 364-369


    Publication date :

    1998-01-15


    Size :

    6 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    JSUS Solar Thermal Thruster and Its Integration with Thermionic Power Converter

    Shimizu, M. / Eguchi, K. / Itoh, K. et al. | British Library Conference Proceedings | 1998


    Solar Thermal Test of Cylindrical Inverted Thermionic Converter

    Clark, Paul / Streckert, Holger / Desplat, Jean-Louis et al. | AIAA | 2003


    Cylindrical Inverted Thermionic Converter for Solar Power and Propulsion Systems

    Gontar, Alexander S. / Streckert, Holger H. / Begg, Lester L. et al. | SAE Technical Papers | 1999


    Terrestrial solar power system based on Cs-Ba thermionic converter

    Ender, A. Ya. / Kuznetsov, V. I. / Sitnov, V. I. et al. | American Institute of Physics | 1999


    Terrestrial Solar Power System Based on Cs-Ba Thermionic Converter

    Ender, A. Y. / Kuznetsov, V. I. / Sitnov, V. I. et al. | British Library Conference Proceedings | 1999