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Aero-acoustic performance comparison of core engine noise suppressors on nasa quiet engine c
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schaefer, J. W. Bloomer, H. E. |
| Copyright Year | 1977 |
| Description | The relative aero-acoustic effectiveness of two core engine suppressors, a contractor-designed suppressor delivered with the Quiet Engine, and a NASA-designed suppressor was evaluated. The NASA suppressor was tested with and without a splitter making a total of three configurations being reported in addition to the baseline hardwall case. The aerodynamic results are presented in terms of tailpipe pressure loss, corrected net thrust, and corrected specific fuel consumption as functions of engine power setting. The acoustic results are divided into duct and far-field acoustic data. The NASA-designed core suppressor did the better job of suppressing aft end noise, but the splitter associated with it caused a significant engine performance penality. The NASA core suppressor without the spltter suppressed most of the core noise without any engine performance penalty. |
| File Size | 2788575 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770021175 |
| Archival Resource Key | ark:/13960/t6sz1391c |
| Language | English |
| Publisher Date | 1977-07-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Performance Tests Engine Design Engine Noise Noise Reduction Quiet Engine Program Aerodynamic Characteristics Suppressors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
