Develop Sand-Plugging Resistant Metallic Combustor Liners

PCI will develop advanced combustor liner configurations for aero gas turbine, which will eliminate or drastically reduce the dust and sand blockage of effusion cooling passages. This advanced combustor liner will utilize novel structures manufactured integral to the liner to mitigate combustor liner clogging by diverting or dislodging particles through passive aerodynamic means. In Phase I of the program, different concepts will be analytically analyzed and compared. Combustor liner coupons will be manufactured to validate the manufacturability of different concepts and allow cold flow clog testing. During Phase I Option, coupons will be experimentally used in an existing high temperature rig to further demonstrate each configuration at conditions closer to that seen in gas turbine combustors. Successful outcome will lead to combustor wall temperature operation according to the original clean air design specifications, thus delivering longer combustor life and lower pressure with higher engine efficiency under severe sandy and dusty environments.