A study was conducted to demonstrate the use of the picosecond time-resolved laser-induced fluorescence (PITLIF) technique to measure hydroxyl (OH) time series and a dynamic pressure sensor to obtain pressure time series in a Schmidt tube combustor. The stationary portions of simultaneous hydroxyl and pressure time series were analyzed by employing singular spectrum analysis (SSA). The noise-reduction capabilities of SSA were discussed from the point of view of instability mitigation in propulsion systems. A fast Fourier transform (FFT) was applied to the original and reconstructed time series to demonstrate the noise-reduction capability of SSA. Successful reconstruction and noise reduction were also demonstrated for extremely noisy and nonstationary time series.
|Number of pages||4|
|Journal||Journal of Propulsion and Power|
|State||Published - 2009|
Bibliographical noteFunding Information:
This project was supported by the U.S. Air Force Office of Scientific Research under grant FA9550-06-1-0064, with Julian Tishkoff serving as technical monitor. We thank Matthew Gluesenkamp for his work in obtaining the experimental data for this investigation.
ASJC Scopus subject areas
- Aerospace Engineering
- Fuel Technology
- Mechanical Engineering
- Space and Planetary Science