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Sound propagation from a supersonic jet flowing through a rigid-walled duct with a j-deflector
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Margasahayam, Ravi Kandula, Max Vu, Bruce |
| Copyright Year | 2003 |
| Description | An experimental study is performed on the acoustical characteristics of a scale-model, perfectly expanded, cold supersonic jet of gaseous nitrogen (Mach 2.5, nozzle exit diameter of 1 inch) flowing through a rigid-walled duct having an upstream J-deflector. The nozzle is mounted vertically, with the nozzle exit plane at a height of 73 jet diameters above ground level. Relative to the nozzle exit plane, the location of the duct inlet is varied at 10, 5, and -1 jet diameters. Far-field sound pressure levels were obtained at 2 levels (54 jet diameters and 10 jet diameters above ground) with the aid of 9 acoustic sensors equally spaced around a circular arc of radius equal to 80 jet diameters. Comparisons of the acoustic field were made with and without the duct. |
| File Size | 2062562 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030032190 |
| Archival Resource Key | ark:/13960/t8vb33k06 |
| Language | English |
| Publisher Date | 2003-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Gas Jets Cold Gas Sound Propagation Scale Models Ducts Supersonic Nozzles Supersonic Jet Flow Convergent-divergent Nozzles Nitrogen Aeroacoustics 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 |
