Loading...
Please wait, while we are loading the content...
Similar Documents
Externally-blown-flap noise
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dorsch, R. G. Olsen, W. A. Kreim, W. J. |
| Copyright Year | 1972 |
| Description | Noise data were obtained with a large externally blown flap model. A fan-jet engine exhaust was simulated by a 1/2-scale bypass nozzle supplied by pressurized air. The nozzle was pylon mounted on a wing section having a double-slotted flap for lift augmentation. Noise radiation patterns and spectra were obtained for nozzle exhaust velocities between 400 and 1150 ft/sec. The blown flap noise data are in good agreement with previous small model results extrapolated to test conditions by Strouhal scaling. The results indicate that blown flap noise must be suppressed to meet STOL aircraft noise goals. |
| File Size | 1996360 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720008309 |
| Archival Resource Key | ark:/13960/t0cv98h1r |
| Language | English |
| Publisher Date | 1972-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Flaps Control Surfaces Short Takeoff Aircraft Acoustic Measurement Noise Reduction Scaling Laws Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
