Abstract: A fuel nozzle includes a center body and a shroud circumferentially surrounding at least a portion of the center body to define an annular passage between the center body and the shroud. A plurality of vanes extend radially between the center body and the shroud in the annular passage. A first ceramic extension extends downstream from the shroud to define at least a portion of the annular passage downstream from the shroud.

Abstract: A system includes at least one gas turbine blade that includes at least one recess disposed in a surface of the at least one gas turbine blade. The system also includes a porous insert that includes multiple pores that enable a cooling fluid to flow through the porous insert. The system further includes a cover plate, wherein the porous insert is disposed within the at least one recess, and the cover plate is disposed over the porous insert to enclose the porous insert within the at least one recess.

Abstract: A system includes at least one gas turbine blade that includes at least one recess disposed in a surface of the at least one gas turbine blade. The system also includes a porous insert that includes multiple pores that enable a cooling fluid to flow through the porous insert. The system further includes a cover plate, wherein the porous insert is disposed within the at least one recess, and the cover plate is disposed over the porous insert to enclose the porous insert within the at least one recess.

Abstract: A fuel nozzle includes a center body and a shroud circumferentially surrounding at least a portion of the center body to define an annular passage between the center body and the shroud. A plurality of vanes extend radially between the center body and the shroud in the annular passage. A first ceramic extension extends downstream from the shroud to define at least a portion of the annular passage downstream from the shroud.

Abstract: The invention provides an apparatus and method for combining materials having different thermal and mechanical properties into an article, such as a gas turbine bucket, which includes a first section, a second section, and a third section; wherein the first section provides structural support for the remaining sections, the second section is integrally joined with the first section, and the third section connects the first and second sections.

Abstract: A device and a method for applying tape to one or more sheets of material in a moving line-up. The device can include a tape applicator, a sensor, a tape cutter, a tape gripper, an engagement-initiation press, and a hold-down portion. During intermittent operation, the tape applicator is moved away from the sheets of material causing an unattached tape portion to extend from the tape applicator to a final connection point on the sheets of material. The tape cutter and the tape gripper are configured to cut and grip the unattached tape portion. As tape application is restarted, the engagement-initiation press is lowered to hold the end of the tape in place. The hold-down portion prevents the sheets of material from shifting out of alignment as tape is applied by the tape applicator. The sensor can be used, for example, to detect gaps between the sheets of material.