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International Journal of Aerospace Engineering
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International Journal of Aerospace Engineering
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2019
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Article
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Tab 4
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Research Article
A Novel Aerodynamic Noise Reduction Method Based on Improving Spanwise Blade Shape for Electric Propeller Aircraft
Table 4
The sound pressure value of the propeller at corresponding speed.
(rpm)
Experimental value (dB)
Original blade (dB)
New blade (dB)
1000
66.0
68.2
56.8
1500
77.8
76.1
66.9
2000
86.9
86.1
77.8