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Systems characterization of combustor instabilities with controls design emphasis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kopasakis, George |
| Copyright Year | 2004 |
| Description | This effort performed test data analysis in order to characterize the general behavior of combustor instabilities with emphasis on controls design. The analysis is performed on data obtained from two configurations of a laboratory combustor rig and from a developmental aero-engine combustor. The study has characterized several dynamic behaviors associated with combustor instabilities. These are: frequency and phase randomness, amplitude modulations, net random phase walks, random noise, exponential growth and intra-harmonic couplings. Finally, the very cause of combustor instabilities was explored and it could be attributed to a more general source-load type impedance interaction that includes the thermo-acoustic coupling. Performing these characterizations on different combustors allows for more accurate identification of the cause of these phenomena and their effect on instability. |
| File Size | 397807 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040035611 |
| Archival Resource Key | ark:/13960/t3810264w |
| Language | English |
| Publisher Date | 2004-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Thermoacoustic Effects Random Noise Control Systems Design Acoustic Coupling Amplitude Modulation Data Processing Computerized Simulation Frequencies Aircraft Engines Probability Density Functions Pressure Dependence Acoustic Instability Combustion Chambers Exhaust Emission Loads Forces 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 |
