A gas gap heat switch has been developed for use in space borne cryogenic systems. The switch is simple, small and lightweight. Due to the absence of moving parts lifetime and reliability are expected to be very high.Four switches have been manufactured and thermal and vibration tests have been successfully carried out. The lowest resonant frequency is 380 Hz and the switches underwent a random vibration up to 11 G in all directions from 30 to 2000 Hz, and a constant acceleration test at 15 G between 15 and 100 Hz.As an example an “on” thermal conductance at 4 K of ≈ 35 mW.K-1 was measured and the on to off ratio was found to be of the order of 2700. The switching temperature is around 15 K.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Thermal Switch for Use at 0.3 K in Space Borne Cryogenic Systems


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference On Environmental Systems ; 1994



    Publication date :

    1994-06-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A Thermal Switch for Use at Liquid Helium Temperature in Space-Borne Cryogenic Systems

    Duband, L. | British Library Conference Proceedings | 1995



    Rocket-borne cryogenic air samplers

    Denton, E. H. | NTRS | 1970


    Rocket-borne cryogenic Michelson interferometer

    Kemp, J.C. / Huppi, R.J. | Tema Archive | 1979


    A nK stable platform for 8kg space borne cryogenic instruments

    Holmes, W. / Chui, T. / Elliot, S. et al. | NTRS | 2000