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 smoothing 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.

Description:
BACKGROUND OF THE INVENTION  
   The present invention is related to the following GE commonly assigned applications: 11/586,060, 11/586,049, 11/586050, 11/586,051, 11/586,052, 11/586,046, 11/586,053, 11/586,054, 11/586,085, 11/586,055, 11/586,088, 11/586,086, 11/586,045, 11/586,087, 11/586,059, 11/586,092, 11/586,090, 11/586,089 and 11/586,091 each filed on Oct. 25, 2006; and the following GE commonly assigned applications: 11/591,695, 11/591,694, 11/591,693 and 11/691,692 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 3 rd  stage airfoil variable stator 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 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 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 3 rd  stage airfoil variable stator blade. 
   
     
       
             
             
             
           
             
             
             
           
         
             
               TABLE I 
             
             
                 
             
             
               X-LOC 
               Y-LOC 
               Z-LOC 
             
             
                 
             
           
           
             
                 
             
           
        
         
             
               2.08 
               −2.026 
               0.005 
             
             
               2.079 
               −2.028 
               0.005 
             
             
               2.077 
               −2.032 
               0.005 
             
             
               2.071 
               −2.039 
               0.005 
             
             
               2.06 
               −2.046 
               0.005 
             
             
               2.036 
               −2.047 
               0.005 
             
             
               2.005 
               −2.038 
               0.005 
             
             
               1.964 
               −2.024 
               0.005 
             
             
               1.913 
               −2.007 
               0.005 
             
             
               1.846 
               −1.985 
               0.005 
             
             
               1.77 
               −1.958 
               0.005 
             
             
               1.688 
               −1.93 
               0.005 
             
             
               1.596 
               −1.897 
               0.005 
             
             
               1.495 
               −1.86 
               0.005 
             
             
               1.384 
               −1.819 
               0.005 
             
             
               1.268 
               −1.774 
               0.005 
             
             
               1.147 
               −1.726 
               0.005 
             
             
               1.023 
               −1.674 
               0.005 
             
             
               0.893 
               −1.62 
               0.005 
             
             
               0.76 
               −1.561 
               0.005 
             
             
               0.623 
               −1.498 
               0.005 
             
             
               0.482 
               −1.43 
               0.005 
             
             
               0.337 
               −1.357 
               0.005 
             
             
               0.194 
               −1.281 
               0.005 
             
             
               0.053 
               −1.203 
               0.005 
             
             
               −0.087 
               −1.121 
               0.005 
             
             
               −0.224 
               −1.037 
               0.005 
             
             
               −0.36 
               −0.948 
               0.005 
             
             
               −0.494 
               −0.856 
               0.005 
             
             
               −0.625 
               −0.761 
               0.005 
             
             
               −0.753 
               −0.662 
               0.005 
             
             
               −0.878 
               −0.559 
               0.005 
             
             
               −1 
               −0.452 
               0.005 
             
             
               −1.119 
               −0.342 
               0.005 
             
             
               −1.231 
               −0.232 
               0.005 
             
             
               −1.335 
               −0.123 
               0.005 
             
             
               −1.432 
               −0.015 
               0.005 
             
             
               −1.522 
               0.092 
               0.005 
             
             
               −1.605 
               0.197 
               0.005 
             
             
               −1.683 
               0.3 
               0.005 
             
             
               −1.754 
               0.4 
               0.005 
             
             
               −1.816 
               0.495 
               0.005 
             
             
               −1.87 
               0.582 
               0.005 
             
             
               −1.915 
               0.661 
               0.005 
             
             
               −1.954 
               0.733 
               0.005 
             
             
               −1.985 
               0.796 
               0.005 
             
             
               −2.009 
               0.851 
               0.005 
             
             
               −2.029 
               0.898 
               0.005 
             
             
               −2.044 
               0.938 
               0.005 
             
             
               −2.055 
               0.971 
               0.005 
             
             
               −2.061 
               0.999 
               0.005 
             
             
               −2.063 
               1.02 
               0.005 
             
             
               −2.063 
               1.037 
               0.005 
             
             
               −2.061 
               1.05 
               0.005 
             
             
               −2.057 
               1.06 
               0.005 
             
             
               −2.051 
               1.066 
               0.005 
             
             
               −2.044 
               1.07 
               0.005 
             
             
               −2.034 
               1.071 
               0.005 
             
             
               −2.021 
               1.07 
               0.005 
             
             
               −2.006 
               1.066 
               0.005 
             
             
               −1.987 
               1.057 
               0.005 
             
             
               −1.963 
               1.045 
               0.005 
             
             
               −1.934 
               1.026 
               0.005 
             
             
               −1.901 
               1.002 
               0.005 
             
             
               −1.863 
               0.972 
               0.005 
             
             
               −1.818 
               0.937 
               0.005 
             
             
               −1.766 
               0.894 
               0.005 
             
             
               −1.707 
               0.843 
               0.005 
             
             
               −1.64 
               0.785 
               0.005 
             
             
               −1.566 
               0.719 
               0.005 
             
             
               −1.485 
               0.646 
               0.005 
             
             
               −1.396 
               0.566 
               0.005 
             
             
               −1.303 
               0.483 
               0.005 
             
             
               −1.207 
               0.396 
               0.005 
             
             
               −1.106 
               0.306 
               0.005 
             
             
               −1.001 
               0.213 
               0.005 
             
             
               −0.892 
               0.117 
               0.005 
             
             
               −0.779 
               0.017 
               0.005 
             
             
               −0.661 
               −0.085 
               0.005 
             
             
               −0.542 
               −0.186 
               0.005 
             
             
               −0.422 
               −0.285 
               0.005 
             
             
               −0.301 
               −0.383 
               0.005 
             
             
               −0.179 
               −0.48 
               0.005 
             
             
               −0.056 
               −0.576 
               0.005 
             
             
               0.068 
               −0.671 
               0.005 
             
             
               0.192 
               −0.765 
               0.005 
             
             
               0.317 
               −0.858 
               0.005 
             
             
               0.443 
               −0.95 
               0.005 
             
             
               0.57 
               −1.041 
               0.005 
             
             
               0.697 
               −1.131 
               0.005 
             
             
               0.821 
               −1.216 
               0.005 
             
             
               0.942 
               −1.298 
               0.005 
             
             
               1.059 
               −1.376 
               0.005 
             
             
               1.172 
               −1.449 
               0.005 
             
             
               1.282 
               −1.519 
               0.005 
             
             
               1.388 
               −1.585 
               0.005 
             
             
               1.49 
               −1.647 
               0.005 
             
             
               1.588 
               −1.706 
               0.005 
             
             
               1.678 
               −1.759 
               0.005 
             
             
               1.759 
               −1.806 
               0.005 
             
             
               1.831 
               −1.847 
               0.005 
             
             
               1.899 
               −1.886 
               0.005 
             
             
               1.958 
               −1.918 
               0.005 
             
             
               2.003 
               −1.944 
               0.005 
             
             
               2.04 
               −1.964 
               0.005 
             
             
               2.067 
               −1.979 
               0.005 
             
             
               2.081 
               −1.997 
               0.005 
             
             
               2.083 
               −2.01 
               0.005 
             
             
               2.082 
               −2.018 
               0.005 
             
             
               2.081 
               −2.022 
               0.005 
             
             
               2.08 
               −2.024 
               0.005 
             
             
               2.08 
               −2.025 
               0.005 
             
             
               2.198 
               −1.391 
               1.544 
             
             
               2.197 
               −1.392 
               1.544 
             
             
               2.195 
               −1.396 
               1.544 
             
             
               2.19 
               −1.402 
               1.544 
             
             
               2.179 
               −1.409 
               1.544 
             
             
               2.156 
               −1.41 
               1.544 
             
             
               2.126 
               −1.402 
               1.544 
             
             
               2.087 
               −1.39 
               1.544 
             
             
               2.038 
               −1.375 
               1.544 
             
             
               1.974 
               −1.355 
               1.544 
             
             
               1.9 
               −1.332 
               1.544 
             
             
               1.822 
               −1.307 
               1.544 
             
             
               1.734 
               −1.279 
               1.544 
             
             
               1.636 
               −1.248 
               1.544 
             
             
               1.528 
               −1.212 
               1.544 
             
             
               1.416 
               −1.175 
               1.544 
             
             
               1.3 
               −1.134 
               1.544 
             
             
               1.178 
               −1.092 
               1.544 
             
             
               1.053 
               −1.047 
               1.544 
             
             
               0.922 
               −0.999 
               1.544 
             
             
               0.788 
               −0.948 
               1.544 
             
             
               0.649 
               −0.893 
               1.544 
             
             
               0.506 
               −0.835 
               1.544 
             
             
               0.364 
               −0.775 
               1.544 
             
             
               0.223 
               −0.713 
               1.544 
             
             
               0.083 
               −0.649 
               1.544 
             
             
               −0.056 
               −0.582 
               1.544 
             
             
               −0.194 
               −0.513 
               1.544 
             
             
               −0.33 
               −0.441 
               1.544 
             
             
               −0.465 
               −0.366 
               1.544 
             
             
               −0.597 
               −0.287 
               1.544 
             
             
               −0.728 
               −0.206 
               1.544 
             
             
               −0.857 
               −0.121 
               1.544 
             
             
               −0.983 
               −0.032 
               1.544 
             
             
               −1.103 
               0.056 
               1.544 
             
             
               −1.215 
               0.145 
               1.544 
             
             
               −1.32 
               0.234 
               1.544 
             
             
               −1.419 
               0.323 
               1.544 
             
             
               −1.512 
               0.411 
               1.544 
             
             
               −1.598 
               0.498 
               1.544 
             
             
               −1.678 
               0.584 
               1.544 
             
             
               −1.748 
               0.665 
               1.544 
             
             
               −1.81 
               0.74 
               1.544 
             
             
               −1.863 
               0.81 
               1.544 
             
             
               −1.908 
               0.873 
               1.544 
             
             
               −1.945 
               0.929 
               1.544 
             
             
               −1.975 
               0.977 
               1.544 
             
             
               −1.998 
               1.019 
               1.544 
             
             
               −2.017 
               1.055 
               1.544 
             
             
               −2.031 
               1.086 
               1.544 
             
             
               −2.04 
               1.111 
               1.544 
             
             
               −2.044 
               1.131 
               1.544 
             
             
               −2.046 
               1.147 
               1.544 
             
             
               −2.045 
               1.16 
               1.544 
             
             
               −2.042 
               1.17 
               1.544 
             
             
               −2.037 
               1.176 
               1.544 
             
             
               −2.031 
               1.18 
               1.544 
             
             
               −2.022 
               1.183 
               1.544 
             
             
               −2.009 
               1.184 
               1.544 
             
             
               −1.994 
               1.182 
               1.544 
             
             
               −1.975 
               1.178 
               1.544 
             
             
               −1.95 
               1.17 
               1.544 
             
             
               −1.921 
               1.157 
               1.544 
             
             
               −1.886 
               1.139 
               1.544 
             
             
               −1.844 
               1.117 
               1.544 
             
             
               −1.796 
               1.09 
               1.544 
             
             
               −1.74 
               1.058 
               1.544 
             
             
               −1.677 
               1.019 
               1.544 
             
             
               −1.605 
               0.973 
               1.544 
             
             
               −1.525 
               0.922 
               1.544 
             
             
               −1.438 
               0.865 
               1.544 
             
             
               −1.342 
               0.802 
               1.544 
             
             
               −1.242 
               0.736 
               1.544 
             
             
               −1.138 
               0.668 
               1.544 
             
             
               −1.03 
               0.596 
               1.544 
             
             
               −0.918 
               0.522 
               1.544 
             
             
               −0.801 
               0.445 
               1.544 
             
             
               −0.681 
               0.365 
               1.544 
             
             
               −0.556 
               0.283 
               1.544 
             
             
               −0.431 
               0.201 
               1.544 
             
             
               −0.305 
               0.12 
               1.544 
             
             
               −0.179 
               0.04 
               1.544 
             
             
               −0.053 
               −0.04 
               1.544 
             
             
               0.074 
               −0.12 
               1.544 
             
             
               0.2 
               −0.199 
               1.544 
             
             
               0.327 
               −0.279 
               1.544 
             
             
               0.454 
               −0.358 
               1.544 
             
             
               0.581 
               −0.436 
               1.544 
             
             
               0.708 
               −0.514 
               1.544 
             
             
               0.836 
               −0.591 
               1.544 
             
             
               0.961 
               −0.665 
               1.544 
             
             
               1.081 
               −0.736 
               1.544 
             
             
               1.197 
               −0.804 
               1.544 
             
             
               1.309 
               −0.869 
               1.544 
             
             
               1.418 
               −0.93 
               1.544 
             
             
               1.522 
               −0.988 
               1.544 
             
             
               1.622 
               −1.044 
               1.544 
             
             
               1.718 
               −1.097 
               1.544 
             
             
               1.806 
               −1.145 
               1.544 
             
             
               1.885 
               −1.187 
               1.544 
             
             
               1.955 
               −1.225 
               1.544 
             
             
               2.021 
               −1.26 
               1.544 
             
             
               2.078 
               −1.29 
               1.544 
             
             
               2.122 
               −1.313 
               1.544 
             
             
               2.158 
               −1.332 
               1.544 
             
             
               2.184 
               −1.346 
               1.544 
             
             
               2.198 
               −1.363 
               1.544 
             
             
               2.201 
               −1.375 
               1.544 
             
             
               2.2 
               −1.383 
               1.544 
             
             
               2.199 
               −1.387 
               1.544 
             
             
               2.199 
               −1.389 
               1.544 
             
             
               2.198 
               −1.39 
               1.544 
             
             
               2.118 
               −0.761 
               3.082 
             
             
               2.117 
               −0.763 
               3.082 
             
             
               2.116 
               −0.767 
               3.082 
             
             
               2.111 
               −0.773 
               3.082 
             
             
               2.1 
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               −0.951 
               −0.134 
               12.314 
             
             
               −1.056 
               −0.058 
               12.314 
             
             
               −1.156 
               0.017 
               12.314 
             
             
               −1.249 
               0.093 
               12.314 
             
             
               −1.336 
               0.168 
               12.314 
             
             
               −1.419 
               0.242 
               12.314 
             
             
               −1.496 
               0.316 
               12.314 
             
             
               −1.564 
               0.385 
               12.314 
             
             
               −1.625 
               0.449 
               12.314 
             
             
               −1.677 
               0.507 
               12.314 
             
             
               −1.722 
               0.56 
               12.314 
             
             
               −1.76 
               0.606 
               12.314 
             
             
               −1.792 
               0.646 
               12.314 
             
             
               −1.818 
               0.681 
               12.314 
             
             
               −1.839 
               0.711 
               12.314 
             
             
               −1.856 
               0.736 
               12.314 
             
             
               −1.868 
               0.757 
               12.314 
             
             
               −1.877 
               0.773 
               12.314 
             
             
               −1.882 
               0.786 
               12.314 
             
             
               −1.886 
               0.797 
               12.314 
             
             
               −1.886 
               0.807 
               12.314 
             
             
               −1.883 
               0.813 
               12.314 
             
             
               −1.877 
               0.816 
               12.314 
             
             
               −1.868 
               0.815 
               12.314 
             
             
               −1.857 
               0.811 
               12.314 
             
             
               −1.845 
               0.806 
               12.314 
             
             
               −1.829 
               0.797 
               12.314 
             
             
               −1.809 
               0.785 
               12.314 
             
             
               −1.785 
               0.768 
               12.314 
             
             
               −1.756 
               0.747 
               12.314 
             
             
               −1.722 
               0.722 
               12.314 
             
             
               −1.682 
               0.692 
               12.314 
             
             
               −1.635 
               0.657 
               12.314 
             
             
               −1.581 
               0.616 
               12.314 
             
             
               −1.52 
               0.57 
               12.314 
             
             
               −1.451 
               0.519 
               12.314 
             
             
               −1.374 
               0.463 
               12.314 
             
             
               −1.29 
               0.403 
               12.314 
             
             
               −1.201 
               0.341 
               12.314 
             
             
               −1.108 
               0.277 
               12.314 
             
             
               −1.01 
               0.212 
               12.314 
             
             
               −0.907 
               0.147 
               12.314 
             
             
               −0.8 
               0.08 
               12.314 
             
             
               −0.688 
               0.013 
               12.314 
             
             
               −0.571 
               −0.055 
               12.314 
             
             
               −0.452 
               −0.121 
               12.314 
             
             
               −0.333 
               −0.185 
               12.314 
             
             
               −0.213 
               −0.248 
               12.314 
             
             
               −0.093 
               −0.309 
               12.314 
             
             
               0.028 
               −0.369 
               12.314 
             
             
               0.15 
               −0.428 
               12.314 
             
             
               0.272 
               −0.485 
               12.314 
             
             
               0.395 
               −0.542 
               12.314 
             
             
               0.518 
               −0.597 
               12.314 
             
             
               0.642 
               −0.651 
               12.314 
             
             
               0.766 
               −0.704 
               12.314 
             
             
               0.887 
               −0.755 
               12.314 
             
             
               1.003 
               −0.803 
               12.314 
             
             
               1.116 
               −0.848 
               12.314 
             
             
               1.225 
               −0.891 
               12.314 
             
             
               1.33 
               −0.931 
               12.314 
             
             
               1.432 
               −0.97 
               12.314 
             
             
               1.529 
               −1.005 
               12.314 
             
             
               1.622 
               −1.039 
               12.314 
             
             
               1.708 
               −1.069 
               12.314 
             
             
               1.784 
               −1.096 
               12.314 
             
             
               1.852 
               −1.119 
               12.314 
             
             
               1.916 
               −1.141 
               12.314 
             
             
               1.972 
               −1.16 
               12.314 
             
             
               2.015 
               −1.174 
               12.314 
             
             
               2.049 
               −1.186 
               12.314 
             
             
               2.075 
               −1.194 
               12.314 
             
             
               2.093 
               −1.203 
               12.314 
             
             
               2.099 
               −1.213 
               12.314 
             
             
               2.1 
               −1.22 
               12.314 
             
             
               2.1 
               −1.223 
               12.314 
             
             
               2.1 
               −1.225 
               12.314 
             
             
               2.099 
               −1.226 
               12.314 
             
             
               2.213 
               −1.677 
               13.853 
             
             
               2.212 
               −1.679 
               13.853 
             
             
               2.211 
               −1.682 
               13.853 
             
             
               2.205 
               −1.688 
               13.853 
             
             
               2.194 
               −1.692 
               13.853 
             
             
               2.173 
               −1.689 
               13.853 
             
             
               2.145 
               −1.682 
               13.853 
             
             
               2.108 
               −1.672 
               13.853 
             
             
               2.061 
               −1.66 
               13.853 
             
             
               2.001 
               −1.644 
               13.853 
             
             
               1.931 
               −1.626 
               13.853 
             
             
               1.857 
               −1.606 
               13.853 
             
             
               1.773 
               −1.582 
               13.853 
             
             
               1.681 
               −1.556 
               13.853 
             
             
               1.579 
               −1.527 
               13.853 
             
             
               1.473 
               −1.495 
               13.853 
             
             
               1.362 
               −1.462 
               13.853 
             
             
               1.247 
               −1.426 
               13.853 
             
             
               1.128 
               −1.387 
               13.853 
             
             
               1.005 
               −1.346 
               13.853 
             
             
               0.878 
               −1.302 
               13.853 
             
             
               0.747 
               −1.254 
               13.853 
             
             
               0.612 
               −1.203 
               13.853 
             
             
               0.477 
               −1.15 
               13.853 
             
             
               0.344 
               −1.094 
               13.853 
             
             
               0.212 
               −1.036 
               13.853 
             
             
               0.081 
               −0.976 
               13.853 
             
             
               −0.049 
               −0.913 
               13.853 
             
             
               −0.177 
               −0.846 
               13.853 
             
             
               −0.304 
               −0.777 
               13.853 
             
             
               −0.429 
               −0.705 
               13.853 
             
             
               −0.552 
               −0.63 
               13.853 
             
             
               −0.672 
               −0.552 
               13.853 
             
             
               −0.791 
               −0.471 
               13.853 
             
             
               −0.903 
               −0.39 
               13.853 
             
             
               −1.009 
               −0.309 
               13.853 
             
             
               −1.109 
               −0.228 
               13.853 
             
             
               −1.203 
               −0.148 
               13.853 
             
             
               −1.292 
               −0.068 
               13.853 
             
             
               −1.376 
               0.011 
               13.853 
             
             
               −1.454 
               0.088 
               13.853 
             
             
               −1.524 
               0.161 
               13.853 
             
             
               −1.586 
               0.229 
               13.853 
             
             
               −1.64 
               0.291 
               13.853 
             
             
               −1.686 
               0.346 
               13.853 
             
             
               −1.725 
               0.395 
               13.853 
             
             
               −1.758 
               0.437 
               13.853 
             
             
               −1.785 
               0.474 
               13.853 
             
             
               −1.807 
               0.505 
               13.853 
             
             
               −1.825 
               0.531 
               13.853 
             
             
               −1.838 
               0.552 
               13.853 
             
             
               −1.847 
               0.569 
               13.853 
             
             
               −1.853 
               0.582 
               13.853 
             
             
               −1.857 
               0.594 
               13.853 
             
             
               −1.858 
               0.603 
               13.853 
             
             
               −1.856 
               0.61 
               13.853 
             
             
               −1.849 
               0.612 
               13.853 
             
             
               −1.84 
               0.61 
               13.853 
             
             
               −1.83 
               0.605 
               13.853 
             
             
               −1.817 
               0.598 
               13.853 
             
             
               −1.802 
               0.587 
               13.853 
             
             
               −1.782 
               0.573 
               13.853 
             
             
               −1.758 
               0.554 
               13.853 
             
             
               −1.729 
               0.531 
               13.853 
             
             
               −1.695 
               0.502 
               13.853 
             
             
               −1.655 
               0.469 
               13.853 
             
             
               −1.608 
               0.43 
               13.853 
             
             
               −1.554 
               0.384 
               13.853 
             
             
               −1.493 
               0.333 
               13.853 
             
             
               −1.423 
               0.276 
               13.853 
             
             
               −1.346 
               0.214 
               13.853 
             
             
               −1.261 
               0.147 
               13.853 
             
             
               −1.171 
               0.079 
               13.853 
             
             
               −1.077 
               0.009 
               13.853 
             
             
               −0.978 
               −0.063 
               13.853 
             
             
               −0.873 
               −0.136 
               13.853 
             
             
               −0.764 
               −0.209 
               13.853 
             
             
               −0.65 
               −0.284 
               13.853 
             
             
               −0.53 
               −0.359 
               13.853 
             
             
               −0.409 
               −0.432 
               13.853 
             
             
               −0.288 
               −0.503 
               13.853 
             
             
               −0.165 
               −0.573 
               13.853 
             
             
               −0.042 
               −0.642 
               13.853 
             
             
               0.082 
               −0.709 
               13.853 
             
             
               0.207 
               −0.775 
               13.853 
             
             
               0.332 
               −0.84 
               13.853 
             
             
               0.458 
               −0.904 
               13.853 
             
             
               0.584 
               −0.967 
               13.853 
             
             
               0.711 
               −1.028 
               13.853 
             
             
               0.839 
               −1.089 
               13.853 
             
             
               0.962 
               −1.146 
               13.853 
             
             
               1.082 
               −1.201 
               13.853 
             
             
               1.198 
               −1.252 
               13.853 
             
             
               1.31 
               −1.301 
               13.853 
             
             
               1.418 
               −1.347 
               13.853 
             
             
               1.522 
               −1.391 
               13.853 
             
             
               1.623 
               −1.432 
               13.853 
             
             
               1.719 
               −1.47 
               13.853 
             
             
               1.807 
               −1.504 
               13.853 
             
             
               1.886 
               −1.534 
               13.853 
             
             
               1.956 
               −1.561 
               13.853 
             
             
               2.023 
               −1.585 
               13.853 
             
             
               2.08 
               −1.606 
               13.853 
             
             
               2.125 
               −1.622 
               13.853 
             
             
               2.16 
               −1.635 
               13.853 
             
             
               2.187 
               −1.644 
               13.853 
             
             
               2.206 
               −1.653 
               13.853 
             
             
               2.213 
               −1.662 
               13.853 
             
             
               2.214 
               −1.67 
               13.853 
             
             
               2.214 
               −1.673 
               13.853 
             
             
               2.214 
               −1.675 
               13.853 
             
             
               2.213 
               −1.676 
               13.853 
             
             
               2.238 
               −2.038 
               15.392 
             
             
               2.238 
               −2.04 
               15.392 
             
             
               2.236 
               −2.043 
               15.392 
             
             
               2.23 
               −2.049 
               15.392 
             
             
               2.218 
               −2.052 
               15.392 
             
             
               2.196 
               −2.047 
               15.392 
             
             
               2.167 
               −2.038 
               15.392 
             
             
               2.128 
               −2.027 
               15.392 
             
             
               2.08 
               −2.014 
               15.392 
             
             
               2.018 
               −1.995 
               15.392 
             
             
               1.946 
               −1.973 
               15.392 
             
             
               1.869 
               −1.949 
               15.392 
             
             
               1.783 
               −1.921 
               15.392 
             
             
               1.688 
               −1.889 
               15.392 
             
             
               1.584 
               −1.853 
               15.392 
             
             
               1.475 
               −1.814 
               15.392 
             
             
               1.362 
               −1.772 
               15.392 
             
             
               1.245 
               −1.727 
               15.392 
             
             
               1.124 
               −1.678 
               15.392 
             
             
               0.999 
               −1.626 
               15.392 
             
             
               0.871 
               −1.57 
               15.392 
             
             
               0.738 
               −1.51 
               15.392 
             
             
               0.602 
               −1.445 
               15.392 
             
             
               0.468 
               −1.378 
               15.392 
             
             
               0.334 
               −1.309 
               15.392 
             
             
               0.202 
               −1.237 
               15.392 
             
             
               0.071 
               −1.163 
               15.392 
             
             
               −0.059 
               −1.087 
               15.392 
             
             
               −0.187 
               −1.007 
               15.392 
             
             
               −0.313 
               −0.926 
               15.392 
             
             
               −0.437 
               −0.841 
               15.392 
             
             
               −0.56 
               −0.753 
               15.392 
             
             
               −0.68 
               −0.663 
               15.392 
             
             
               −0.797 
               −0.569 
               15.392 
             
             
               −0.908 
               −0.475 
               15.392 
             
             
               −1.013 
               −0.381 
               15.392 
             
             
               −1.111 
               −0.289 
               15.392 
             
             
               −1.204 
               −0.197 
               15.392 
             
             
               −1.29 
               −0.107 
               15.392 
             
             
               −1.371 
               −0.019 
               15.392 
             
             
               −1.446 
               0.067 
               15.392 
             
             
               −1.513 
               0.148 
               15.392 
             
             
               −1.573 
               0.223 
               15.392 
             
             
               −1.624 
               0.291 
               15.392 
             
             
               −1.668 
               0.352 
               15.392 
             
             
               −1.706 
               0.405 
               15.392 
             
             
               −1.737 
               0.451 
               15.392 
             
             
               −1.762 
               0.491 
               15.392 
             
             
               −1.783 
               0.525 
               15.392 
             
             
               −1.8 
               0.553 
               15.392 
             
             
               −1.812 
               0.576 
               15.392 
             
             
               −1.82 
               0.594 
               15.392 
             
             
               −1.826 
               0.608 
               15.392 
             
             
               −1.829 
               0.62 
               15.392 
             
             
               −1.831 
               0.63 
               15.392 
             
             
               −1.828 
               0.637 
               15.392 
             
             
               −1.821 
               0.638 
               15.392 
             
             
               −1.812 
               0.634 
               15.392 
             
             
               −1.802 
               0.628 
               15.392 
             
             
               −1.789 
               0.62 
               15.392 
             
             
               −1.774 
               0.608 
               15.392 
             
             
               −1.755 
               0.591 
               15.392 
             
             
               −1.731 
               0.569 
               15.392 
             
             
               −1.703 
               0.542 
               15.392 
             
             
               −1.67 
               0.51 
               15.392 
             
             
               −1.632 
               0.472 
               15.392 
             
             
               −1.586 
               0.427 
               15.392 
             
             
               −1.534 
               0.376 
               15.392 
             
             
               −1.474 
               0.317 
               15.392 
             
             
               −1.407 
               0.253 
               15.392 
             
             
               −1.331 
               0.182 
               15.392 
             
             
               −1.248 
               0.106 
               15.392 
             
             
               −1.16 
               0.027 
               15.392 
             
             
               −1.067 
               −0.053 
               15.392 
             
             
               −0.97 
               −0.135 
               15.392 
             
             
               −0.867 
               −0.219 
               15.392 
             
             
               −0.759 
               −0.304 
               15.392 
             
             
               −0.646 
               −0.39 
               15.392 
             
             
               −0.527 
               −0.477 
               15.392 
             
             
               −0.407 
               −0.562 
               15.392 
             
             
               −0.285 
               −0.645 
               15.392 
             
             
               −0.163 
               −0.726 
               15.392 
             
             
               −0.039 
               −0.806 
               15.392 
             
             
               0.085 
               −0.885 
               15.392 
             
             
               0.21 
               −0.964 
               15.392 
             
             
               0.335 
               −1.041 
               15.392 
             
             
               0.46 
               −1.118 
               15.392 
             
             
               0.586 
               −1.194 
               15.392 
             
             
               0.713 
               −1.268 
               15.392 
             
             
               0.841 
               −1.342 
               15.392 
             
             
               0.964 
               −1.412 
               15.392 
             
             
               1.085 
               −1.478 
               15.392 
             
             
               1.202 
               −1.54 
               15.392 
             
             
               1.315 
               −1.599 
               15.392 
             
             
               1.424 
               −1.654 
               15.392 
             
             
               1.53 
               −1.706 
               15.392 
             
             
               1.632 
               −1.755 
               15.392 
             
             
               1.73 
               −1.801 
               15.392 
             
             
               1.82 
               −1.841 
               15.392 
             
             
               1.901 
               −1.877 
               15.392 
             
             
               1.973 
               −1.908 
               15.392 
             
             
               2.041 
               −1.936 
               15.392 
             
             
               2.1 
               −1.96 
               15.392 
             
             
               2.146 
               −1.979 
               15.392 
             
             
               2.183 
               −1.993 
               15.392 
             
             
               2.21 
               −2.004 
               15.392 
             
             
               2.23 
               −2.013 
               15.392 
             
             
               2.238 
               −2.022 
               15.392 
             
             
               2.239 
               −2.03 
               15.392 
             
             
               2.239 
               −2.034 
               15.392 
             
             
               2.239 
               −2.036 
               15.392 
             
             
               2.239 
               −2.037 
               15.392 
             
             
                 
             
           
        
       
     
   
   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.