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NACA-TN-747
Propeller rotation noise due to torque and thrust
Year: 1940
Abstract: Sound pressure of the first four harmonics of rotation from a full-scale two-blade propeller were measured and are compared with values calculated from theory. The comparison is made (1) for the space distribution with constant tip speed and (2) for fixed space angles with variable tip speed. A relation for rotation noise from an element of radius developed by Gutin is given showing the effect of number of blades on the rotation noise.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:59:33Z | |
| date available | 2017-09-04T17:59:33Z | |
| date copyright | 01/01/1940 | |
| date issued | 1940 | |
| identifier other | FUONEEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/182682 | |
| description abstract | Sound pressure of the first four harmonics of rotation from a full-scale two-blade propeller were measured and are compared with values calculated from theory. The comparison is made (1) for the space distribution with constant tip speed and (2) for fixed space angles with variable tip speed. A relation for rotation noise from an element of radius developed by Gutin is given showing the effect of number of blades on the rotation noise. | |
| language | English | |
| title | NACA-TN-747 | num |
| title | Propeller rotation noise due to torque and thrust | en |
| type | standard | |
| page | 19 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1940 | |
| contenttype | fulltext |