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Noise of the sr-3 propeller model at 2 deg and 4 deg angle of attack
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dittmar, J. H. Jeracki, R. J. |
| Copyright Year | 1981 |
| Description | The noise effect of operating supersonic tip speed propellers at angle of attack with respect to the incoming flow was determined. Increases in the maximum blade passage noise were observed for the propeller operating at angle of attack. The noise increase was not symmetrical with one wall of the wind tunnel having significantly more noise increase than the other wall. This was apparently the result of the rotational direction of the propeller. The lack of symmetry of the noise at angle of attack to the use of oppositely rotating propellers on opposite sides of an airplane fuselage as a way of minimizing the noise due to operation at angle of attack. |
| File Size | 10537234 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820008934 |
| Archival Resource Key | ark:/13960/t9j43km4s |
| Language | English |
| Publisher Date | 1981-12-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Propellers Supersonic Speed Wind Tunnel Tests Aircraft Design Angle of Attack Noise Measurement Aircraft Configurations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
