High efficiency stator for the first phase of a gas turbine

Details High efficiency stator for the first phase of a gas turbine High efficiency stator for the first phase of a gas turbine

F - Mech Eng,Light,Heat,Weapons

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F01D 9/02 (2006.01) F01D 5/14 (2006.01) F01D 9/04 (2006.01) F02C 3/00 (2006.01) F02C 5/00 (2006.01)

Patent

CA 2502791

Stator for the first phase of a low-pressure turbine having a series of blades (1) each defined by coordinates of a discreet combination of points, in a Cartesian reference system (X,Y,Z), wherein the axis (Z) is a radial axis intersecting the central axis of the turbine. The profile of each blade (1) is identified by means of a series of closed intersection curves (20) between the profile itself and planes (X,Y) lying at distances (Z) from the central axis. Each blade (1) has an average throat angle defined by the cosine arc of the ratio between the average throat length at mid-height of the blade and the circumferential pitch evaluated at the radius of the average throat point; the average throat angle ranges from 57° to 60°.

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