Research Article
Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates
Table 1
Specifications of AC90/6 fan family of fans.
| | AC90/6 fans | Blade geometry | Hub | Tip |
| l/t | 1.32 | 0.31 | Pitch angle (deg) | 36 | 28 | Camber angle (deg) | 46 | 41 | solidity | 1.24 | 0.3 |
| Fan rotor | | |
| Blade number | 6 | Blade tip pitch angle (deg) | 16/28 | Blade tip stagger angle (deg) | 74/62 | Hub-to-casing diameter ratio | 0.22 | Tip diameter (mm) | 900.0 | Rotor tip clearance (% span) | 1.0 | Rated rotational frequency (rpm) | 935/950 |
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