High-Efficiency Centrifugal Compressor Impeller (6+6 Blades) | 120,000 RPM | CFD Optimized

This is a professionally designed and gas-dynamically optimized centrifugal compressor impeller, engineered for high-RPM turbomachinery applications (microturbines, RC jet engines, high-pressure blowers, or custom electric superchargers).

Designed using advanced gas-dynamic principles, this model features a 6 main + 6 splitter blade geometry to maximize mass flow, minimize blade blockage, and provide high total pressure ratios without aerodynamic choking.Key Specifications and Main Dimensions

• Outer Diameter (d2): 66.0 mm (R33 mm)
• Total Axial Height (dz): 23.5 mm
• Inlet / Suction Diameter (dS): 39.5 mm-Shaft Bore: Diameter 5.0 mm (R2.5 mm) with integrated D-Flat (D-Bore, 2.0 mm offset) for positive, non-slip torque transmission without high-RPM set screws.-Blade Configuration: 12 total blades (6 Main + 6 Splitter)
• Rotation Direction: Right (Clockwise)
• Blade Profile: Elliptical Leading Edges for clean flow intake; Tapered Trailing Edges.
• Structural Durability: Integrated hub-to-blade root fillets to handle severe centrifugal stresses at high rotational speeds.

Aerodynamic and Performance Data (Design Point)

• Design Speed (n): 120,000 RPM
• Mass Flow Rate (m_dot): approx. 0.15 kg/s
• Total-to-Total Pressure Ratio (pi_tt): 2.5 : 1
• Total-to-Total Efficiency (eta_tt): approx. 88.9%
• Tip Speed (u2): 414.7 m/s (Supersonic tip speed)
• Relative Mach Number: Maintained under critical thresholds (Ma_W <= 0.84) along shroud to eliminate shock-wave losses.

Geometry Integrity and Mesh Quality

Watertight and Clean Topology: High-density, optimized polygonal mesh without self-intersections or open boundaries.

CAD Ready: Flawless NURBS / Solid conversion with smooth surface continuity, ready for immediate CAM path generation and CFD meshing.

Technical Drawings and Wireframe Included: Full blueprint dimensions and wireframe mesh previews are available in the preview gallery.

Manufacturing and Material Recommendations Operational Use (120,000 RPM): Due to extreme centrifugal forces (> 500,000 G) and aerodynamic heating (130-150 degrees C), operational units MUST be manufactured via 5-axis CNC machining (e.g., Al 7075-T6, Titanium Ti-6Al-4V) or DMLS/SLM Metal 3D Printing.

SLA / FDM Printing: Resin or Filament 3D printing is recommended ONLY for fitment testing, mockups, or low-RPM demonstration models (< 15,000 RPM). Standard 3D printing resins will fail mechanically under full dynamic load.

Included File Formats

.STEP / .STP -- Universal solid CAD geometry for SolidWorks, Fusion 360, CATIA, Inventor, Rhino, CAM setups, etc.

.STL -- High-density 3D mesh optimized for rapid prototyping / fitment tests.

.IGES -- Surface data for advanced multi-axis CAM pathing.