Research Institute of Advanced Materials Gas-Generator (AMG), a joint effort by the Japan Key Technology Center and 14 companies in Japan, has, since 1993, been conducting technological studies on an innovative gas generator that will use 20% less fuel, weigh 50% less, and emit 70% less NO{sub}x than the conventional gas generator through the use of advanced materials. In the course of R&D, the feasibility of applying a gradient composite material with ceramic matrix composite (CMC) and glass matrix composite (GMC), which is expected to reduce the thermal stress of actual parts with temperature distribution, was evaluated based on its mechanical and thermal properties, productivity and stress analysis for an actual part as a combustor liner with 500 mm diameter, and non-cooled combustion tests for the liner outlet temperature of 1873 K. Through our studies we have confirmed the applicability of the selected CMC/GMC hybrid composite as a combustor liner.
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