Centrifugal Blower Fan Rotor

**Optimized Fan Geometry – Text-to-CAD Description** ```text Create a high-performance centrifugal blower fan rotor optimized for a compact gaming handheld. Fan Type: Centrifugal blower (backward-curved blades) Overall Diameter: 36 mm Hub Diameter: 14 mm Blade Height (axial thickness): 9 mm Number of Blades: 11 (odd number) Blade Geometry: - Blade type: Backward-curved - Blade tip angle: 30 degrees - Blade angle at root: approximately 40–45 degrees - Moderate camber - Chord length decreases from root to tip - Blade thickness: 1.1 mm at root, tapering to 0.7 mm at tip - Leading edge: Slightly rounded - Trailing edge: Serrated (small sawtooth pattern) for noise reduction - Small winglets at the blade tips (height 0.6–0.8 mm) - Slight backward sweep on the blades - Tip clearance target: 0.4 mm (design the blades accordingly) Hub: - Cylindrical hub with diameter 14 mm - Smooth transition from hub to blades - Include a central shaft hole of 2.5 mm diameter (or D-shaft if preferred) Additional Features: - Blades evenly spaced but with very slight intentional irregularity for noise spreading (optional) - All edges slightly filleted (0.15–0.25 mm) for strength and lower noise - Optimized for high static pressure and reduced turbulence Material appearance: Smooth technical plastic Style: Clean, precise, engineering-grade turbomachinery design ``` You can copy and paste the text above directly into a Text-to-CAD AI. Would you like a shorter version, a more aggressive high-pressure version, or one that also includes the fan housing/volute?

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