Study Program for Lift Fan Noise Reduction and Suppression |
Contents
LIST OF SYMBOLS | 7 |
NOISE PARAMETRIC DATA | 16 |
Noise Parametric Data for IGV Fans | 27 |
4 other sections not shown
Common terms and phrases
0.55 Rotor-Stator Tip 36 Vane/Blade Ratio Absolute Air Angle blade number Blade Passing Frequency blade rows Blades 66 Number Data for Run deg Rotor Exit deg Rotor Inlet Exit Absolute Air Exit Relative Air Fan Aero-Acoustic Data Fan Pressure Ratio Fan Tip Diameter Fan Tip Speed fan weight HUB PITCH TIP IGV Fans Inlet Absolute Air Inlet Relative Air noise reduction Number of Blades Number of Rotor Number of Stator OGV Fan Aero-Acoustic PNdB pure tone quiet IGV fan Ratio 0.55 Rotor-Stator Relative Air Angle Rotor Blade Chord Rotor Blades 66 Rotor Diffusion Factor Rotor Exit Absolute Rotor Exit Relative Rotor Exit Speed Rotor Inlet Absolute Rotor Inlet Radius Rotor Inlet Relative Rotor Inlet Speed Rotor-Stator Spacing Rotor-Stator Tip Spacing sound power levels Sound Pressure Level Speed and Pressure Stator Diffusion Factor Stator Solidity Stator Vane Chord Stator Vanes 36 U₁ Vane/Blade Ratio 0.55 Vanes 36 Vane/Blade