| 摘要 |
PURPOSE:To improve heat-resisting properties of a liner, by a method wherein an opening in the predetermined size is provided on a metallic liner and porous ceramics having a predetermined gas permeability quantity is lined on the metallic liner. CONSTITUTION:Porous ceramics 12 is lined on the inside of a metallic liner 11 through a thin shock absorbing material 13. A predetermined opening 14 is provided on the liner 11 and secondary combustion is performed by making air flowing through a cooling air passage 15 introduce into a combustion chamber 16 through the porous ceramics 12. The cooling air enters into the combustion chamber 16 by passing through the opening 14 and porous ceramics 12 from the cooling air passage 15. The air cools the porous ceramics 12 when it passes through the porous ceramics 12. It is, therefore, prevented that the porous ceramics 12 comes to a high temperature, which results in prevention of a matter that the liner comes to the high temperature.
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