Affiliation:
1. Gas Turbine Laboratory, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139
2. Pratt & Whitney, East Hartford, CT 06108
Abstract
This paper presents an experimental and analytical investigation of compressor stability assessment during engine transient operation. A two-dimensional, linear, compressible, state-space analysis of stall-inception (Feulner et al., 1996, ASME J. Turbomach., 118, pp. 1–10) was modified to account for engine transients and deterioration, with the latter modeled as increased tip-clearance and flow blockage. Experiments were performed on large commercial aircraft engines in both undeteriorated and deteriorated states. Unsteady measurements of pressure in these test engines during rapid accelerations revealed the growth of pre-stall disturbances, which rotate at rotor speed and at approximately half rotor speed. These disturbances are stronger in deteriorated engines. The model showed that the signal at shaft speed was the first compressible system mode, whose frequency is near shaft speed, excited by geometric nonuniformities. The computed behavior of this mode during throttle transients closely matched engine data. The signal increased in strength as stall was approached and as the engine deteriorated. This work firmly establishes the connection between observed signals in the these engines and first principles stability models. [S0889-504X(00)01603-2]
Reference10 articles.
1. Emmons, H., Pearson, C., and Grant, H., 1955, “Compressor Surge and Stall Propagation,” Trans. ASME, 79, pp. 455–469.
2. Moore, F.
, 1984, “A Theory of Rotating Stall of Multistage Axial Compressors: Part I—Small Disturbances,” ASME J. Eng. Gas Turbines Power, 106, pp. 313–320.
3. Moore, F., and Greitzer, E., 1986, “A Theory of Post-Stall Transients in Axial Compressors: Part I—Development of the Equations,” ASME J. Eng. Gas Turbines Power, 108, pp. 68–76.
4. Bonnaure, L., 1991, “Modelling High Speed Multistage Compressor Stability,” Master’s thesis, Department of Aeronautics and Astronautics, MIT.
5. Feulner, M., Hendricks, G., and Paduano, J., 1996, “Modeling for Control of Rotating Stall in High Speed Multi-Stage Axial Compressors,” ASME J. Turbomach., 118, pp. 1–10.
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献