PATENT DOCUMENT

Abstract:
An article of manufacture having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in a TABLE 1. Wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches. The profile sections at the Z distances being joined smoothly with one another to form a complete airfoil shape.

Full Description:
BACKGROUND OF THE INVENTION 
   The present invention is related to the following GE commonly assigned applications: 11/586049, 11/586050, 11/586051, 11/586052, 11/586046, 11/586053, 11/586054, 11/586085, 11/586055, 11/586088, 11/586086, 11/586045, 11/586087, 11/586059, 11/586092, 11/586090, 11/586089 and 11/586091 each filed on Oct. 25, 2006; and the following GE commonly assigned applications: 11/591691, 11/591695, 11/591694, 11/591693 and 11/591692 each filed on Nov. 2, 2006. 
   The present invention relates to airfoils for a rotor blade of a gas turbine. In particular, the invention relates to compressor airfoil profiles for various stages of the compressor. In particular, the invention relates to compressor airfoil profiles for either inlet guide vanes, rotors, or stators at various stages of the compressor. 
   In a gas turbine, many system requirements should be met at each stage of a gas turbine&#39;s flow path section to meet design goals. These design goals include, but are not limited to, overall improved efficiency and airfoil loading capability. For example, and in no way limiting of the invention, a blade of a compressor stator should achieve thermal and mechanical operating requirements for that particular stage. Further, for example, and in no way limiting of the invention, a blade of a compressor rotor should achieve thermal and mechanical operating requirements for that particular stage. 
   BRIEF DESCRIPTION OF THE INVENTION 
   In accordance with one exemplary aspect of the instant invention, an article of manufacture having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE 1. Wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches. The profile sections at the Z distances being joined smoothly with one another to form a complete airfoil shape. 
   In accordance with another exemplary aspect of the instant invention, a compressor comprises a compressor wheel. The compressor wheel has a plurality of articles of manufacture. Each of the articles of manufacture includes an airfoil having an airfoil shape. The airfoil comprises a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE 1, wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches. The profile sections at the Z distances being joined smoothly with one another to form a complete airfoil shape. 
   In accordance with yet exemplary another aspect of the instant invention, a compressor comprises a compressor wheel having a plurality of articles of manufacture. Each of the articles of manufacture includes an airfoil having an uncoated nominal airfoil profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE 1, wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z in inches. The profile sections at the Z distances being joined smoothly with one another to form a complete airfoil shape. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a schematic exemplary representation of a compressor flow path through multiple stages of a gas turbine and illustrates an exemplary airfoil according to an embodiment of the invention; 
       FIGS. 2 and 3  are respective perspective exemplary views of a rotor blade according to an embodiment of the invention with the rotor blade airfoil illustrated in conjunction with its platform and its substantially or near axial entry dovetail connection; 
       FIGS. 4 and 5  are side elevational views of the rotor blade of  FIG. 2  and associated platform and dovetail connection as viewed in a generally circumferential direction from the pressure and suction sides of the airfoil, respectively; 
       FIG. 6  is a cross-sectional view of the rotor blade airfoil taken generally about on line  6 - 6  in  FIG. 5 ; 
       FIG. 7  is a perspective views of a rotor blade according to an exemplary embodiment of the invention with coordinate system superimposed thereon; and 
       FIG. 8  is a perspective view of a stator blade according to an exemplary embodiment of the invention with coordinate system superimposed thereon. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring now to the drawings,  FIG. 1  illustrates an axial compressor flow path  1  of a gas turbine compressor  2  that includes a plurality of compressor stages. The compressor stages are sequentially numbered in the Figure. The compressor flow path comprises any number of rotor stages and stator stages, such as eighteen. However, the exact number of rotor and stator stages is a choice of engineering design. Any number of rotor and stator stages can be provided in the combustor, as embodied by the invention. The seventeen rotor stages are merely exemplary of one turbine design. The eighteen rotor stages are not intended to limit the invention in any manner. 
   The compressor rotor blades impart kinetic energy to the airflow and therefore bring about a desired pressure rise across the compressor. Directly following the rotor airfoils is a stage of stator airfoils. Both the rotor and stator airfoils turn the airflow, slow the airflow velocity (in the respective airfoil frame of reference), and yield a rise in the static pressure of the airflow. The configuration of the airfoil (along with its interaction with surrounding airfoils), including its peripheral surface provides for stage airflow efficiency, enhanced aeromechanics, smooth laminar flow from stage to stage, reduced thermal stresses, enhanced interrelation of the stages to effectively pass the airflow from stage to stage, and reduced mechanical stresses, among other desirable aspects of the invention. Typically, multiple rows of rotor/stator stages are stacked in axial flow compressors to achieve a desired discharge to inlet pressure ratio. Rotor and stator airfoils can be secured to rotor wheels or stator case by an appropriate attachment configuration, often known as a “root”, “base” or “dovetail” (see  FIGS. 2-5 ). 
   A stage of the compressor  2  is exemplarily illustrated in  FIG. 1 . The stage of the compressor  2  comprises a plurality of circumferentially spaced rotor blades  22  mounted on a rotor wheel  51  and a plurality of circumferentially spaced stator blades  23  attached to a static compressor case  59 . Each of the rotor wheels is attached to aft drive shaft  58 , which is connected to the turbine section of the engine. The rotor blades and stator blades lie in the flow path  1  of the compressor. The direction of airflow through the compressor flow path  1 , as embodied by the invention, is indicated by the arrow  60  ( FIG. 1 ). This stage of the compressor  2  is merely exemplarily of the stages of the compressor  2  within the scope of the invention. The illustrated and described stage of the compressor  2  is not intended to limit the invention in any manner. 
   The rotor blades  22  are mounted on the rotor wheel  51  forming part of aft drive shaft  58 . Each rotor blade  22 , as illustrated in  FIGS. 2-6 , is provided with a platform  61 , and substantially or near axial entry dovetail  62  for connection with a complementary-shaped mating dovetail, not shown, on the rotor wheel  51 . An axial entry dovetail, however, may be provided with the airfoil profile, as embodied by the invention. Each rotor blade  22  comprises a rotor blade airfoil  63 , as illustrated in  FIGS. 2-6 . Thus, each of the rotor blades  22  has a rotor blade airfoil profile  66  at any cross-section from the airfoil root  64  at a midpoint of platform  61  to the rotor blade tip  65  in the general shape of an airfoil ( FIG. 6 ). 
   To define the airfoil shape of the rotor blade airfoil, a unique set or loci of points in space are provided. This unique set or loci of points meet the stage requirements so the stage can be manufactured. This unique loci of points also meets the desired requirements for stage efficiency and reduced thermal and mechanical stresses. The loci of points are arrived at by iteration between aerodynamic and mechanical loadings enabling the compressor to run in an efficient, safe and smooth manner. 
   The loci, as embodied by the invention, defines the rotor blade airfoil profile and can comprise a set of points relative to the axis of rotation of the engine. For example, a set of points can be provided to define a rotor blade airfoil profile. 
   A Cartesian coordinate system of X, Y and Z values given in the Table below defines a profile of a rotor blade airfoil at various locations along its length. The airfoil, as embodied by the invention, could find an application as a 5 th  stage airfoil rotor blade. The coordinate values for the X, Y and Z coordinates are set forth in inches, although other units of dimensions may be used when the values are appropriately converted. These values exclude fillet regions of the platform. The Cartesian coordinate system has orthogonally-related X, Y and Z axes. The X axis lies parallel to the compressor blade&#39;s dovetail axis, which is at a angle to the engine&#39;s centerline, as illustrated in  FIG. 7  for a rotor and  FIG. 8  for a stator. A positive X coordinate value is axial toward the aft, for example the exhaust end of the compressor. A positive Y coordinate value directed normal to the dovetail axis. A positive Z coordinate value is directed radially outward toward tip of the airfoil, which is towards the static casing of the compressor for rotor blades, and directed radially inward towards the engine centerline of the compressor for stator blades. 
   For reference purposes only, there is established point- 0  passing through the intersection of the airfoil and the platform along the stacking axis, as illustrated in  FIG. 5 . In the exemplary embodiment of the airfoil hereof, the point- 0  is defined as the reference section where the Z coordinate of the table above is at 0.000 inches, which is a set predetermined distance from the engine or rotor centerline. 
   By defining X and Y coordinate values at selected locations in a Z direction normal to the X, Y plane, the profile section of the rotor blade airfoil, such as, but not limited to the profile section  66  in  FIG. 6 , at each Z distance along the length of the airfoil can be ascertained. By connecting the X and Y values with smooth continuing arcs, each profile section  66  at each distance Z can be fixed. The airfoil profiles of the various surface locations between the distances Z are determined by smoothly connecting the adjacent profile sections  66  to one another, thus forming the airfoil profile. These values represent the airfoil profiles at ambient, non-operating or non-hot conditions and are for an uncoated airfoil. 
   The table values are generated and shown to three decimal places for determining the profile of the airfoil. There are typical manufacturing tolerances as well as coatings, which should be accounted for in the actual profile of the airfoil. Accordingly, the values for the profile given are for a nominal airfoil. It will therefore be appreciated that +/− typical manufacturing tolerances, such as, +/− values, including any coating thicknesses, are additive to the X and Y values. Therefore, a distance of about +/−0.160 inches in a direction normal to any surface location along the airfoil profile defines an airfoil profile envelope for a rotor blade airfoil design and compressor. In other words, a distance of about +/−0.160 inches in a direction normal to any surface location along the airfoil profile defines a range of variation between measured points on the actual airfoil surface at nominal cold or room temperature and the ideal position of those points, at the same temperature, as embodied by the invention. The rotor blade airfoil design, as embodied by the invention, is robust to this range of variation without impairment of mechanical and aerodynamic functions. 
   The coordinate values given in TABLE 1 below provide the nominal profile envelope for an exemplary 5 th  stage airfoil rotor blade. 
   
     
       
             
             
             
           
             
             
             
           
         
             
               TABLE 1 
             
             
                 
             
             
               X-LOC 
               Y-LOC 
               Z-LOC 
             
             
                 
             
           
           
             
                 
             
           
        
         
             
               2.406 
               0.12 
               0.034 
             
             
               2.407 
               0.113 
               0.034 
             
             
               2.404 
               0.105 
               0.034 
             
             
               2.396 
               0.096 
               0.034 
             
             
               2.383 
               0.091 
               0.034 
             
             
               2.366 
               0.085 
               0.034 
             
             
               2.343 
               0.078 
               0.034 
             
             
               2.314 
               0.069 
               0.034 
             
             
               2.279 
               0.058 
               0.034 
             
             
               2.237 
               0.045 
               0.034 
             
             
               2.189 
               0.03 
               0.034 
             
             
               2.131 
               0.012 
               0.034 
             
             
               2.064 
               −0.009 
               0.034 
             
             
               1.989 
               −0.031 
               0.034 
             
             
               1.904 
               −0.056 
               0.034 
             
             
               1.81 
               −0.083 
               0.034 
             
             
               1.707 
               −0.112 
               0.034 
             
             
               1.6 
               −0.141 
               0.034 
             
             
               1.488 
               −0.171 
               0.034 
             
             
               1.371 
               −0.201 
               0.034 
             
             
               1.25 
               −0.231 
               0.034 
             
             
               1.123 
               −0.26 
               0.034 
             
             
               0.992 
               −0.289 
               0.034 
             
             
               0.856 
               −0.316 
               0.034 
             
             
               0.72 
               −0.341 
               0.034 
             
             
               0.583 
               −0.364 
               0.034 
             
             
               0.445 
               −0.383 
               0.034 
             
             
               0.307 
               −0.398 
               0.034 
             
             
               0.168 
               −0.41 
               0.034 
             
             
               0.029 
               −0.417 
               0.034 
             
             
               −0.112 
               −0.42 
               0.034 
             
             
               −0.252 
               −0.418 
               0.034 
             
             
               −0.392 
               −0.411 
               0.034 
             
             
               −0.531 
               −0.399 
               0.034 
             
             
               −0.67 
               −0.381 
               0.034 
             
             
               −0.804 
               −0.357 
               0.034 
             
             
               −0.931 
               −0.329 
               0.034 
             
             
               −1.052 
               −0.297 
               0.034 
             
             
               −1.167 
               −0.261 
               0.034 
             
             
               −1.275 
               −0.222 
               0.034 
             
             
               −1.378 
               −0.181 
               0.034 
             
             
               −1.475 
               −0.136 
               0.034 
             
             
               −1.567 
               −0.089 
               0.034 
             
             
               −1.648 
               −0.043 
               0.034 
             
             
               −1.72 
               0.002 
               0.034 
             
             
               −1.783 
               0.044 
               0.034 
             
             
               −1.839 
               0.087 
               0.034 
             
             
               −1.886 
               0.126 
               0.034 
             
             
               −1.92 
               0.158 
               0.034 
             
             
               −1.946 
               0.185 
               0.034 
             
             
               −1.964 
               0.207 
               0.034 
             
             
               −1.976 
               0.225 
               0.034 
             
             
               −1.98 
               0.236 
               0.034 
             
             
               −1.981 
               0.243 
               0.034 
             
             
               −1.98 
               0.247 
               0.034 
             
             
               −1.98 
               0.249 
               0.034 
             
             
               −1.979 
               0.249 
               0.034 
             
             
               −1.979 
               0.25 
               0.034 
             
             
               −1.978 
               0.252 
               0.034 
             
             
               −1.975 
               0.254 
               0.034 
             
             
               −1.969 
               0.258 
               0.034 
             
             
               −1.958 
               0.26 
               0.034 
             
             
               −1.938 
               0.261 
               0.034 
             
             
               −1.912 
               0.259 
               0.034 
             
             
               −1.877 
               0.254 
               0.034 
             
             
               −1.833 
               0.246 
               0.034 
             
             
               −1.777 
               0.235 
               0.034 
             
             
               −1.712 
               0.22 
               0.034 
             
             
               −1.643 
               0.204 
               0.034 
             
             
               −1.565 
               0.186 
               0.034 
             
             
               −1.479 
               0.168 
               0.034 
             
             
               −1.383 
               0.149 
               0.034 
             
             
               −1.283 
               0.13 
               0.034 
             
             
               −1.179 
               0.112 
               0.034 
             
             
               −1.069 
               0.095 
               0.034 
             
             
               −0.955 
               0.079 
               0.034 
             
             
               −0.836 
               0.064 
               0.034 
             
             
               −0.713 
               0.051 
               0.034 
             
             
               −0.586 
               0.039 
               0.034 
             
             
               −0.454 
               0.029 
               0.034 
             
             
               −0.321 
               0.02 
               0.034 
             
             
               −0.189 
               0.013 
               0.034 
             
             
               −0.057 
               0.007 
               0.034 
             
             
               0.076 
               0.003 
               0.034 
             
             
               0.208 
               0 
               0.034 
             
             
               0.341 
               −0.002 
               0.034 
             
             
               0.474 
               −0.002 
               0.034 
             
             
               0.607 
               −0.001 
               0.034 
             
             
               0.739 
               0.002 
               0.034 
             
             
               0.872 
               0.005 
               0.034 
             
             
               1.004 
               0.01 
               0.034 
             
             
               1.133 
               0.016 
               0.034 
             
             
               1.256 
               0.023 
               0.034 
             
             
               1.376 
               0.031 
               0.034 
             
             
               1.49 
               0.039 
               0.034 
             
             
               1.601 
               0.048 
               0.034 
             
             
               1.706 
               0.058 
               0.034 
             
             
               1.808 
               0.068 
               0.034 
             
             
               1.9 
               0.077 
               0.034 
             
             
               1.984 
               0.087 
               0.034 
             
             
               2.058 
               0.095 
               0.034 
             
             
               2.124 
               0.103 
               0.034 
             
             
               2.181 
               0.11 
               0.034 
             
             
               2.23 
               0.117 
               0.034 
             
             
               2.271 
               0.122 
               0.034 
             
             
               2.306 
               0.127 
               0.034 
             
             
               2.334 
               0.131 
               0.034 
             
             
               2.357 
               0.134 
               0.034 
             
             
               2.374 
               0.137 
               0.034 
             
             
               2.388 
               0.138 
               0.034 
             
             
               2.398 
               0.133 
               0.034 
             
             
               2.404 
               0.127 
               0.034 
             
             
               2.403 
               −0.006 
               1.236 
             
             
               2.403 
               −0.013 
               1.236 
             
             
               2.401 
               −0.022 
               1.236 
             
             
               2.393 
               −0.029 
               1.236 
             
             
               2.38 
               −0.034 
               1.236 
             
             
               2.362 
               −0.039 
               1.236 
             
             
               2.339 
               −0.045 
               1.236 
             
             
               2.31 
               −0.053 
               1.236 
             
             
               2.275 
               −0.062 
               1.236 
             
             
               2.234 
               −0.073 
               1.236 
             
             
               2.185 
               −0.086 
               1.236 
             
             
               2.128 
               −0.101 
               1.236 
             
             
               2.061 
               −0.117 
               1.236 
             
             
               1.985 
               −0.135 
               1.236 
             
             
               1.901 
               −0.155 
               1.236 
             
             
               1.807 
               −0.176 
               1.236 
             
             
               1.704 
               −0.198 
               1.236 
             
             
               1.597 
               −0.22 
               1.236 
             
             
               1.485 
               −0.242 
               1.236 
             
             
               1.368 
               −0.263 
               1.236 
             
             
               1.247 
               −0.284 
               1.236 
             
             
               1.121 
               −0.304 
               1.236 
             
             
               0.991 
               −0.322 
               1.236 
             
             
               0.855 
               −0.339 
               1.236 
             
             
               0.72 
               −0.353 
               1.236 
             
             
               0.584 
               −0.365 
               1.236 
             
             
               0.448 
               −0.373 
               1.236 
             
             
               0.311 
               −0.379 
               1.236 
             
             
               0.174 
               −0.381 
               1.236 
             
             
               0.037 
               −0.379 
               1.236 
             
             
               −0.101 
               −0.372 
               1.236 
             
             
               −0.239 
               −0.362 
               1.236 
             
             
               −0.375 
               −0.348 
               1.236 
             
             
               −0.512 
               −0.329 
               1.236 
             
             
               −0.648 
               −0.306 
               1.236 
             
             
               −0.778 
               −0.279 
               1.236 
             
             
               −0.903 
               −0.249 
               1.236 
             
             
               −1.023 
               −0.216 
               1.236 
             
             
               −1.137 
               −0.18 
               1.236 
             
             
               −1.246 
               −0.143 
               1.236 
             
             
               −1.349 
               −0.103 
               1.236 
             
             
               −1.447 
               −0.063 
               1.236 
             
             
               −1.539 
               −0.02 
               1.236 
             
             
               −1.621 
               0.021 
               1.236 
             
             
               −1.694 
               0.061 
               1.236 
             
             
               −1.757 
               0.098 
               1.236 
             
             
               −1.815 
               0.136 
               1.236 
             
             
               −1.863 
               0.171 
               1.236 
             
             
               −1.899 
               0.2 
               1.236 
             
             
               −1.927 
               0.224 
               1.236 
             
             
               −1.946 
               0.244 
               1.236 
             
             
               −1.958 
               0.261 
               1.236 
             
             
               −1.962 
               0.272 
               1.236 
             
             
               −1.964 
               0.279 
               1.236 
             
             
               −1.963 
               0.282 
               1.236 
             
             
               −1.963 
               0.284 
               1.236 
             
             
               −1.962 
               0.285 
               1.236 
             
             
               −1.962 
               0.286 
               1.236 
             
             
               −1.961 
               0.287 
               1.236 
             
             
               −1.959 
               0.29 
               1.236 
             
             
               −1.953 
               0.295 
               1.236 
             
             
               −1.943 
               0.299 
               1.236 
             
             
               −1.924 
               0.303 
               1.236 
             
             
               −1.897 
               0.304 
               1.236 
             
             
               −1.862 
               0.303 
               1.236 
             
             
               −1.818 
               0.3 
               1.236 
             
             
               −1.761 
               0.295 
               1.236 
             
             
               −1.696 
               0.287 
               1.236 
             
             
               −1.626 
               0.277 
               1.236 
             
             
               −1.548 
               0.265 
               1.236 
             
             
               −1.461 
               0.251 
               1.236 
             
             
               −1.365 
               0.236 
               1.236 
             
             
               −1.265 
               0.221 
               1.236 
             
             
               −1.161 
               0.205 
               1.236 
             
             
               −1.052 
               0.188 
               1.236 
             
             
               −0.939 
               0.171 
               1.236 
             
             
               −0.821 
               0.154 
               1.236 
             
             
               −0.699 
               0.137 
               1.236 
             
             
               −0.572 
               0.121 
               1.236 
             
             
               −0.441 
               0.104 
               1.236 
             
             
               −0.31 
               0.088 
               1.236 
             
             
               −0.179 
               0.072 
               1.236 
             
             
               −0.048 
               0.058 
               1.236 
             
             
               0.083 
               0.045 
               1.236 
             
             
               0.215 
               0.032 
               1.236 
             
             
               0.346 
               0.021 
               1.236 
             
             
               0.478 
               0.01 
               1.236 
             
             
               0.61 
               0.001 
               1.236 
             
             
               0.741 
               −0.007 
               1.236 
             
             
               0.873 
               −0.014 
               1.236 
             
             
               1.005 
               −0.02 
               1.236 
             
             
               1.133 
               −0.024 
               1.236 
             
             
               1.256 
               −0.026 
               1.236 
             
             
               1.375 
               −0.028 
               1.236 
             
             
               1.489 
               −0.028 
               1.236 
             
             
               1.599 
               −0.027 
               1.236 
             
             
               1.705 
               −0.025 
               1.236 
             
             
               1.806 
               −0.022 
               1.236 
             
             
               1.898 
               −0.018 
               1.236 
             
             
               1.982 
               −0.014 
               1.236 
             
             
               2.057 
               −0.01 
               1.236 
             
             
               2.123 
               −0.006 
               1.236 
             
             
               2.18 
               −0.003 
               1.236 
             
             
               2.228 
               0.001 
               1.236 
             
             
               2.269 
               0.004 
               1.236 
             
             
               2.304 
               0.006 
               1.236 
             
             
               2.333 
               0.008 
               1.236 
             
             
               2.355 
               0.01 
               1.236 
             
             
               2.373 
               0.012 
               1.236 
             
             
               2.386 
               0.012 
               1.236 
             
             
               2.396 
               0.007 
               1.236 
             
             
               2.401 
               0 
               1.236 
             
             
               2.408 
               −0.084 
               2.438 
             
             
               2.407 
               −0.091 
               2.438 
             
             
               2.404 
               −0.099 
               2.438 
             
             
               2.396 
               −0.107 
               2.438 
             
             
               2.383 
               −0.11 
               2.438 
             
             
               2.365 
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               9.648 
             
             
               −0.603 
               −0.252 
               9.648 
             
             
               −0.709 
               −0.196 
               9.648 
             
             
               −0.811 
               −0.141 
               9.648 
             
             
               −0.908 
               −0.086 
               9.648 
             
             
               −1 
               −0.032 
               9.648 
             
             
               −1.087 
               0.022 
               9.648 
             
             
               −1.169 
               0.075 
               9.648 
             
             
               −1.243 
               0.125 
               9.648 
             
             
               −1.309 
               0.17 
               9.648 
             
             
               −1.367 
               0.212 
               9.648 
             
             
               −1.42 
               0.252 
               9.648 
             
             
               −1.466 
               0.288 
               9.648 
             
             
               −1.5 
               0.316 
               9.648 
             
             
               −1.527 
               0.34 
               9.648 
             
             
               −1.546 
               0.359 
               9.648 
             
             
               −1.559 
               0.374 
               9.648 
             
             
               −1.565 
               0.383 
               9.648 
             
             
               −1.567 
               0.39 
               9.648 
             
             
               −1.568 
               0.393 
               9.648 
             
             
               −1.567 
               0.395 
               9.648 
             
             
               −1.567 
               0.396 
               9.648 
             
             
               −1.566 
               0.397 
               9.648 
             
             
               −1.565 
               0.398 
               9.648 
             
             
               −1.561 
               0.399 
               9.648 
             
             
               −1.554 
               0.398 
               9.648 
             
             
               −1.543 
               0.395 
               9.648 
             
             
               −1.525 
               0.388 
               9.648 
             
             
               −1.501 
               0.377 
               9.648 
             
             
               −1.47 
               0.361 
               9.648 
             
             
               −1.432 
               0.339 
               9.648 
             
             
               −1.382 
               0.31 
               9.648 
             
             
               −1.325 
               0.277 
               9.648 
             
             
               −1.264 
               0.241 
               9.648 
             
             
               −1.195 
               0.202 
               9.648 
             
             
               −1.119 
               0.159 
               9.648 
             
             
               −1.033 
               0.112 
               9.648 
             
             
               −0.944 
               0.065 
               9.648 
             
             
               −0.85 
               0.017 
               9.648 
             
             
               −0.752 
               −0.032 
               9.648 
             
             
               −0.649 
               −0.081 
               9.648 
             
             
               −0.541 
               −0.131 
               9.648 
             
             
               −0.428 
               −0.182 
               9.648 
             
             
               −0.311 
               −0.232 
               9.648 
             
             
               −0.189 
               −0.282 
               9.648 
             
             
               −0.066 
               −0.331 
               9.648 
             
             
               0.057 
               −0.378 
               9.648 
             
             
               0.181 
               −0.423 
               9.648 
             
             
               0.306 
               −0.467 
               9.648 
             
             
               0.431 
               −0.51 
               9.648 
             
             
               0.556 
               −0.552 
               9.648 
             
             
               0.681 
               −0.594 
               9.648 
             
             
               0.806 
               −0.635 
               9.648 
             
             
               0.932 
               −0.676 
               9.648 
             
             
               1.058 
               −0.716 
               9.648 
             
             
               1.184 
               −0.755 
               9.648 
             
             
               1.306 
               −0.793 
               9.648 
             
             
               1.423 
               −0.829 
               9.648 
             
             
               1.537 
               −0.862 
               9.648 
             
             
               1.647 
               −0.894 
               9.648 
             
             
               1.753 
               −0.925 
               9.648 
             
             
               1.855 
               −0.953 
               9.648 
             
             
               1.952 
               −0.98 
               9.648 
             
             
               2.042 
               −1.004 
               9.648 
             
             
               2.123 
               −1.025 
               9.648 
             
             
               2.195 
               −1.044 
               9.648 
             
             
               2.259 
               −1.06 
               9.648 
             
             
               2.315 
               −1.073 
               9.648 
             
             
               2.362 
               −1.085 
               9.648 
             
             
               2.402 
               −1.095 
               9.648 
             
             
               2.436 
               −1.103 
               9.648 
             
             
               2.463 
               −1.11 
               9.648 
             
             
               2.486 
               −1.115 
               9.648 
             
             
               2.503 
               −1.119 
               9.648 
             
             
               2.516 
               −1.122 
               9.648 
             
             
               2.524 
               −1.129 
               9.648 
             
             
               2.527 
               −1.137 
               9.648 
             
             
               2.524 
               −1.195 
               10.85 
             
             
               2.522 
               −1.201 
               10.85 
             
             
               2.516 
               −1.207 
               10.85 
             
             
               2.505 
               −1.21 
               10.85 
             
             
               2.492 
               −1.208 
               10.85 
             
             
               2.474 
               −1.205 
               10.85 
             
             
               2.451 
               −1.201 
               10.85 
             
             
               2.423 
               −1.196 
               10.85 
             
             
               2.388 
               −1.189 
               10.85 
             
             
               2.347 
               −1.182 
               10.85 
             
             
               2.298 
               −1.173 
               10.85 
             
             
               2.241 
               −1.162 
               10.85 
             
             
               2.176 
               −1.149 
               10.85 
             
             
               2.102 
               −1.134 
               10.85 
             
             
               2.019 
               −1.116 
               10.85 
             
             
               1.927 
               −1.096 
               10.85 
             
             
               1.827 
               −1.073 
               10.85 
             
             
               1.723 
               −1.048 
               10.85 
             
             
               1.615 
               −1.021 
               10.85 
             
             
               1.503 
               −0.992 
               10.85 
             
             
               1.387 
               −0.961 
               10.85 
             
             
               1.267 
               −0.927 
               10.85 
             
             
               1.143 
               −0.89 
               10.85 
             
             
               1.015 
               −0.851 
               10.85 
             
             
               0.887 
               −0.811 
               10.85 
             
             
               0.76 
               −0.768 
               10.85 
             
             
               0.634 
               −0.724 
               10.85 
             
             
               0.509 
               −0.678 
               10.85 
             
             
               0.384 
               −0.63 
               10.85 
             
             
               0.26 
               −0.581 
               10.85 
             
             
               0.136 
               −0.529 
               10.85 
             
             
               0.013 
               −0.476 
               10.85 
             
             
               −0.109 
               −0.421 
               10.85 
             
             
               −0.23 
               −0.364 
               10.85 
             
             
               −0.349 
               −0.305 
               10.85 
             
             
               −0.464 
               −0.245 
               10.85 
             
             
               −0.574 
               −0.186 
               10.85 
             
             
               −0.679 
               −0.127 
               10.85 
             
             
               −0.779 
               −0.068 
               10.85 
             
             
               −0.874 
               −0.009 
               10.85 
             
             
               −0.964 
               0.048 
               10.85 
             
             
               −1.05 
               0.105 
               10.85 
             
             
               −1.131 
               0.161 
               10.85 
             
             
               −1.203 
               0.213 
               10.85 
             
             
               −1.268 
               0.26 
               10.85 
             
             
               −1.325 
               0.304 
               10.85 
             
             
               −1.377 
               0.345 
               10.85 
             
             
               −1.422 
               0.382 
               10.85 
             
             
               −1.456 
               0.411 
               10.85 
             
             
               −1.482 
               0.436 
               10.85 
             
             
               −1.5 
               0.455 
               10.85 
             
             
               −1.513 
               0.471 
               10.85 
             
             
               −1.519 
               0.48 
               10.85 
             
             
               −1.521 
               0.487 
               10.85 
             
             
               −1.522 
               0.49 
               10.85 
             
             
               −1.521 
               0.492 
               10.85 
             
             
               −1.521 
               0.493 
               10.85 
             
             
               −1.52 
               0.493 
               10.85 
             
             
               −1.519 
               0.494 
               10.85 
             
             
               −1.515 
               0.495 
               10.85 
             
             
               −1.508 
               0.494 
               10.85 
             
             
               −1.497 
               0.491 
               10.85 
             
             
               −1.479 
               0.484 
               10.85 
             
             
               −1.455 
               0.472 
               10.85 
             
             
               −1.425 
               0.454 
               10.85 
             
             
               −1.387 
               0.431 
               10.85 
             
             
               −1.338 
               0.401 
               10.85 
             
             
               −1.282 
               0.366 
               10.85 
             
             
               −1.222 
               0.329 
               10.85 
             
             
               −1.154 
               0.287 
               10.85 
             
             
               −1.079 
               0.242 
               10.85 
             
             
               −0.995 
               0.193 
               10.85 
             
             
               −0.907 
               0.142 
               10.85 
             
             
               −0.815 
               0.091 
               10.85 
             
             
               −0.718 
               0.038 
               10.85 
             
             
               −0.616 
               −0.015 
               10.85 
             
             
               −0.51 
               −0.069 
               10.85 
             
             
               −0.399 
               −0.124 
               10.85 
             
             
               −0.284 
               −0.179 
               10.85 
             
             
               −0.164 
               −0.234 
               10.85 
             
             
               −0.043 
               −0.287 
               10.85 
             
             
               0.079 
               −0.34 
               10.85 
             
             
               0.201 
               −0.391 
               10.85 
             
             
               0.323 
               −0.44 
               10.85 
             
             
               0.446 
               −0.489 
               10.85 
             
             
               0.569 
               −0.537 
               10.85 
             
             
               0.693 
               −0.585 
               10.85 
             
             
               0.816 
               −0.632 
               10.85 
             
             
               0.94 
               −0.678 
               10.85 
             
             
               1.064 
               −0.724 
               10.85 
             
             
               1.189 
               −0.769 
               10.85 
             
             
               1.309 
               −0.812 
               10.85 
             
             
               1.426 
               −0.852 
               10.85 
             
             
               1.539 
               −0.891 
               10.85 
             
             
               1.647 
               −0.927 
               10.85 
             
             
               1.752 
               −0.961 
               10.85 
             
             
               1.853 
               −0.992 
               10.85 
             
             
               1.95 
               −1.022 
               10.85 
             
             
               2.039 
               −1.048 
               10.85 
             
             
               2.12 
               −1.071 
               10.85 
             
             
               2.192 
               −1.091 
               10.85 
             
             
               2.256 
               −1.108 
               10.85 
             
             
               2.311 
               −1.123 
               10.85 
             
             
               2.358 
               −1.135 
               10.85 
             
             
               2.399 
               −1.145 
               10.85 
             
             
               2.432 
               −1.153 
               10.85 
             
             
               2.46 
               −1.16 
               10.85 
             
             
               2.482 
               −1.166 
               10.85 
             
             
               2.5 
               −1.17 
               10.85 
             
             
               2.512 
               −1.173 
               10.85 
             
             
               2.521 
               −1.18 
               10.85 
             
             
               2.525 
               −1.188 
               10.85 
             
             
               2.46 
               −1.255 
               12.052 
             
             
               2.458 
               −1.261 
               12.052 
             
             
               2.451 
               −1.267 
               12.052 
             
             
               2.44 
               −1.27 
               12.052 
             
             
               2.427 
               −1.267 
               12.052 
             
             
               2.409 
               −1.264 
               12.052 
             
             
               2.386 
               −1.26 
               12.052 
             
             
               2.358 
               −1.255 
               12.052 
             
             
               2.323 
               −1.248 
               12.052 
             
             
               2.281 
               −1.24 
               12.052 
             
             
               2.232 
               −1.23 
               12.052 
             
             
               2.175 
               −1.218 
               12.052 
             
             
               2.109 
               −1.204 
               12.052 
             
             
               2.034 
               −1.187 
               12.052 
             
             
               1.951 
               −1.166 
               12.052 
             
             
               1.86 
               −1.143 
               12.052 
             
             
               1.76 
               −1.116 
               12.052 
             
             
               1.656 
               −1.087 
               12.052 
             
             
               1.549 
               −1.055 
               12.052 
             
             
               1.437 
               −1.02 
               12.052 
             
             
               1.322 
               −0.981 
               12.052 
             
             
               1.204 
               −0.94 
               12.052 
             
             
               1.081 
               −0.894 
               12.052 
             
             
               0.956 
               −0.845 
               12.052 
             
             
               0.831 
               −0.793 
               12.052 
             
             
               0.707 
               −0.739 
               12.052 
             
             
               0.585 
               −0.683 
               12.052 
             
             
               0.463 
               −0.624 
               12.052 
             
             
               0.343 
               −0.563 
               12.052 
             
             
               0.223 
               −0.501 
               12.052 
             
             
               0.104 
               −0.437 
               12.052 
             
             
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               −0.371 
               12.052 
             
             
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               −0.303 
               12.052 
             
             
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               12.052 
             
             
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               12.052 
             
             
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               12.052 
             
             
               −0.576 
               −0.021 
               12.052 
             
             
               −0.676 
               0.048 
               12.052 
             
             
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               0.117 
               12.052 
             
             
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               0.184 
               12.052 
             
             
               −0.946 
               0.251 
               12.052 
             
             
               −1.027 
               0.316 
               12.052 
             
             
               −1.102 
               0.38 
               12.052 
             
             
               −1.17 
               0.44 
               12.052 
             
             
               −1.23 
               0.495 
               12.052 
             
             
               −1.282 
               0.544 
               12.052 
             
             
               −1.33 
               0.592 
               12.052 
             
             
               −1.37 
               0.635 
               12.052 
             
             
               −1.401 
               0.668 
               12.052 
             
             
               −1.424 
               0.695 
               12.052 
             
             
               −1.44 
               0.717 
               12.052 
             
             
               −1.451 
               0.734 
               12.052 
             
             
               −1.456 
               0.744 
               12.052 
             
             
               −1.458 
               0.751 
               12.052 
             
             
               −1.458 
               0.755 
               12.052 
             
             
               −1.457 
               0.756 
               12.052 
             
             
               −1.457 
               0.757 
               12.052 
             
             
               −1.456 
               0.758 
               12.052 
             
             
               −1.454 
               0.758 
               12.052 
             
             
               −1.451 
               0.758 
               12.052 
             
             
               −1.444 
               0.757 
               12.052 
             
             
               −1.434 
               0.752 
               12.052 
             
             
               −1.416 
               0.742 
               12.052 
             
             
               −1.395 
               0.727 
               12.052 
             
             
               −1.367 
               0.705 
               12.052 
             
             
               −1.332 
               0.677 
               12.052 
             
             
               −1.287 
               0.64 
               12.052 
             
             
               −1.235 
               0.599 
               12.052 
             
             
               −1.18 
               0.554 
               12.052 
             
             
               −1.116 
               0.505 
               12.052 
             
             
               −1.046 
               0.452 
               12.052 
             
             
               −0.967 
               0.394 
               12.052 
             
             
               −0.884 
               0.335 
               12.052 
             
             
               −0.796 
               0.275 
               12.052 
             
             
               −0.704 
               0.213 
               12.052 
             
             
               −0.607 
               0.151 
               12.052 
             
             
               −0.505 
               0.087 
               12.052 
             
             
               −0.399 
               0.022 
               12.052 
             
             
               −0.289 
               −0.044 
               12.052 
             
             
               −0.174 
               −0.111 
               12.052 
             
             
               −0.058 
               −0.177 
               12.052 
             
             
               0.059 
               −0.241 
               12.052 
             
             
               0.176 
               −0.304 
               12.052 
             
             
               0.294 
               −0.366 
               12.052 
             
             
               0.413 
               −0.426 
               12.052 
             
             
               0.532 
               −0.486 
               12.052 
             
             
               0.652 
               −0.544 
               12.052 
             
             
               0.772 
               −0.602 
               12.052 
             
             
               0.892 
               −0.659 
               12.052 
             
             
               1.013 
               −0.714 
               12.052 
             
             
               1.135 
               −0.769 
               12.052 
             
             
               1.253 
               −0.82 
               12.052 
             
             
               1.368 
               −0.868 
               12.052 
             
             
               1.479 
               −0.913 
               12.052 
             
             
               1.586 
               −0.956 
               12.052 
             
             
               1.69 
               −0.995 
               12.052 
             
             
               1.79 
               −1.031 
               12.052 
             
             
               1.886 
               −1.065 
               12.052 
             
             
               1.975 
               −1.095 
               12.052 
             
             
               2.055 
               −1.12 
               12.052 
             
             
               2.127 
               −1.143 
               12.052 
             
             
               2.191 
               −1.162 
               12.052 
             
             
               2.247 
               −1.178 
               12.052 
             
             
               2.294 
               −1.192 
               12.052 
             
             
               2.334 
               −1.203 
               12.052 
             
             
               2.368 
               −1.212 
               12.052 
             
             
               2.396 
               −1.219 
               12.052 
             
             
               2.418 
               −1.225 
               12.052 
             
             
               2.435 
               −1.23 
               12.052 
             
             
               2.448 
               −1.233 
               12.052 
             
             
               2.457 
               −1.24 
               12.052 
             
             
               2.461 
               −1.248 
               12.052 
             
             
                 
             
           
        
       
     
   
   It will also be appreciated that the exemplary airfoil(s) disclosed in the above Table 1 may be scaled up or down geometrically for use in other similar compressor designs. Consequently, the coordinate values set forth in the Table 1 may be scaled upwardly or downwardly such that the airfoil profile shape remains unchanged. A scaled version of the coordinates in Table 1 would be represented by X, Y and Z coordinate values of Table 1 multiplied or divided by a constant. 
   While various embodiments are described herein, it will be appreciated from the specification that various combinations of elements, variations or improvements therein may be made by those skilled in the art, and are within the scope of the invention.