In general, for installing multilayer insulation (MLI) blankets on curved spacecraft equipment, creating a pattern that has multiple sectors is necessary because of the impossibility of establishing a single piece of MLI. The sector area of the MLI contains numerous seams and sewing. Therefore, prediction of overall performance or effective emittance is not simply possible, and they need to be tested in some experimental ways. The aim of the current research is to present a methodology for determining the conductivity between layers in both nonsewing and sewing regions of MLI to correctly estimate the effective emittance coefficient and the thermal behavior of MLI. Firstly, by conducting two experimental tests, both sewn and nonsewn square MLIs’ effective emittance coefficients are computed. In the second step, the conductive thermal coupling coefficients of nonsewing and sewing regions are determined as 1.615 and 1.95    W / ( m 2 K ) respectively, utilizing experimental data. In the third step, a spherical geometry fuel tank is selected as a case study, and these coefficients are utilized in the simulation process of an MLI tank. Finally, the overall effective emittance coefficient of that tank is determined. The results indicate that the effective emittance is reduced by about 8%.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation of Interlayer Thermal Coupling of Multilayer Insulation in Spacecraft Equipment


    Contributors:

    Published in:

    Publication date :

    2025-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Multilayer Insulation for Spacecraft Applications

    Kang, C.-S. / COSPAR / Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 1999


    Investigation of Insulation Effect on Spacecraft Thermal Control System

    Farag, Ahmed M. / Elzahaby, Aly M. / Khalil, Mohamed K. et al. | AIAA | 2016



    Interplanetary Dust Particle Shielding Capability of Spacecraft Multilayer Insulation

    Iyer, Kaushik A. / Mehoke, Douglas S. / Batra, Romesh C. | AIAA | 2015


    Control device and equipment for laying spacecraft thermal insulation material

    WANG ZHE / FU HAO / WU TINGTING et al. | European Patent Office | 2021

    Free access