Compressor Rotor Blade Airfoil Coordinate Optimization
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Solution Overview
Problem
Conventional airfoil designs in compressor rotor blades of gas turbines suffer from aerodynamic inefficiencies, leading to performance losses and reduced system efficiency in power generation.
Innovation Solution
The airfoil shape is defined by Cartesian coordinate values in Tables I-IX, which when connected by smooth arcs, form a nominal profile that enhances aerodynamic efficiency by optimizing the suction-side and pressure-side surfaces, thereby improving the rotor blade's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional airfoil designs are used in compressor rotor blades, then manufacturing and design simplicity is maintained, but aerodynamic efficiency deteriorates leading to performance losses
Solution Approach 1:
The patent applies parameter changes by precisely modifying the geometric parameters of the airfoil shape through defined Cartesian coordinate values. The airfoil profile is characterized by specific coordinate points (X, Y, Z) that define the suction side, pressure side, and overall geometry. By optimizing these coordinate parameters, the invention achieves improved aerodynamic efficiency while maintaining a manufacturable design through systematic parameter adjustment rather than fundamental design overhaul.
2Productivity
If optimized airfoil shapes with precise coordinate definitions are implemented, then aerodynamic performance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the airfoil geometry into discrete coordinate segments defined by multiple Cartesian coordinate points along the airfoil span. The airfoil is characterized by a series of (X, Y, Z) coordinate values at different positions, allowing the complex three-dimensional shape to be broken down into manageable measurement and manufacturing segments. This segmentation enables precise control of aerodynamic features while providing clear manufacturing targets for each coordinate point.
Solution Approach 2:
The invention uses parameter changes by defining specific numerical coordinate values (X, Y, Z) that characterize the airfoil geometry. These parameters include chordwise position, spanwise position, and radial position coordinates that can be precisely controlled during manufacturing. The optimized coordinate parameters enable improved aerodynamic performance while providing explicit manufacturing targets that guide precision fabrication processes.
Data Source
AI summary
A rotor blade includes an airfoil having an airfoil shape. The airfoil shape has a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in one of Table I, Table II, Table III, Table IV, Table V, Table VI, Table VII, Table VIII, or Table IX. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each Z value. The airfoil profile sections at Z values are joined smoothly with one another to form a complete airfoil shape.