turbine stages

turbine stages

turbine stagesclick for a larger image
Two stages of a turbine.
A set of NGVs (nozzle guide vanes) followed by one set of rotor blades forms one stage of a turbine.
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With the addition of a two-stage fan and two additional low turbine stages, the engine that started as a "throwaway" on a missile evolved into the JT8D engine series.
The PW1000G consists of a single-stage fan, three booster stages, eight high pressure compressor stages, two high pressure turbine stages and three low pressure turbine stages.
The ball bearings bounced fore and aft like pinballs between the compressor and turbine stages, robbing the engine of many blades before exiting.
Then he examines such topics as the aerodynamic performance analysis of axial-flow turbines, the preliminary aerodynamic design of radial-inflow turbine stages, and quasi-three-dimensional blade passage flow field analysis.
Thin-film sensors have the advantage of light weight and low profile, which suits them for application in both compressor and turbine stages.
Sometimes as many as three lacing wires could be found in old steam turbine stages.
Also, steam cooling makes more air available to expand and produce work through the turbine stages, reducing what is traditionally labeled as "chargeable air.
Another major area of study by DERA and the Ohio State turbine lab team is to measure unsteadiness in turbine loads so that turbine manufacturers can improve the design of their high work turbine stages.
The gas generator has a two-stage axial turbine driving seven axial turbine stages and a single-stage, centrifugal high-pressure compressor.
For example, CFD codes are used to calculate viscous flow, both steady and unsteady, in axial cascades under subsonic, transonic, and supersonic conditions; design and off-design conditions in axial or radial compressor and turbine stages, for both rotors and stators; the flow in return channels, diffusers, cooling passages, and compact heat exchangers; heat transfer in cooled gas-turbine blades; and turbulent flames in combustion chambers.
This was achieved by replacing the first two turbine stages with ceramics.
These include optimizing the blade profiling and the blade heights and diameters, as well as increasing the annulus area and adjusting the axial spacing between turbine stages.