Abstract: A method and apparatus are provided for producing a temperature profile of a part operating within a machine is provided. The machine is operated with the part for a predetermined period of time. The part is placed in a light box in which a camera produces an image of the part. The image is compared with a standard set of colors and the standard color most closely corresponding to each pixel of the image is selected.

Abstract: Past fuel injection nozzles have attempted to provide a structure to reduce exhaust emissions, generally NOx using water injection. Such nozzles have failed to attain adequate reduction of exhaust emissions. The present fuel injector structure has resulted in reduced NOx emissions. The structure includes a combustor having an axis a first air flow passage, a second air flow passage, a first annular fuel passage and a second annular fuel passage. Positioned in the first air flow passage is a directing device through which water is introduced in a swirling manner and mixed with the air in the first air flow passage. Fuel is introduced into the first and/or second annular fuel passages and mixed with air in the second air flow passage. The mixtures of air and water, and fuel and air are mixed prior to entering the combustion section. The unique structure swirls the air and fuel and the air and water prior to their meeting and mixing.

Abstract: The lean premix combustion approach for NOx emissions control in gas turbine combustion systems has led to the problems of increased combustion pressure oscillation during engine operation and flame outs during rapid engine load reduction. Combustion pressure oscillation can reduce the durability of the engine and combustion system components to unacceptable levels. Flame outs can make the engine unacceptable from the operational viewpoint. The use of a control device allows the combustion pressure oscillation amplitude to be controlled to levels required for long durability of the combustion system components. It also allows an engine control system to operate the engine at part load condition and during rapid load reduction without flame out. When used at small levels, its effect on the engine NOx emissions is small. Higher levels may sometimes be needed to control the combustion pressure oscillation to acceptable levels.

Abstract: A filter for separating material of greater density from material of lesser density, comprises a hollow body having an inlet at one end thereof for the materials to be separated, and outlets at the other end thereof for the separated materials. A passage joins the inlet to the outlets and has two sets of separator vanes disposed therein. Alternatively, a single set of separator vanes is disposed in the passage. Each set of vanes is positioned in the passage so as to define a first, convergent flow path for the material of greater density. The vanes in each set are spaced longitudinally of the passage such that a plurality of second, divergent flow paths for the material of lesser density are defined between respective pairs of adjacent vanes. Each vane has an upstream edge, a first surface portion extending from the edge in a downstream direction and facing in an upstream direction, and a second surface portion which is concave and which faces in the downstream direction.