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Effects of mistuning on bending-torsion flutter and response of a cascade in incompressible flow. [turbofan engines
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kielb, R. E. Kaza, K. R. V. |
| Copyright Year | 1981 |
| Description | The effect of small differences between the individual blades (mistuning) on the aeroelastic stability and response of a cascade were studied. The aerodynamic, inertial, and structural coupling between the bending and torsional motions of each blade and the aerodynamic coupling between the blades was considered. A digital computer program was developed to conduct parametric studies. Results indicate that the mistuning has a beneficial effect on the coupled bending torsion and uncoupled torsion flutter. On forced response, however, the effect may be either beneficial or adverse, depending on the engine order of the forcing function. The results also illustrate that it may be feasible to utilize mistuning as a passive control to increase flutter speed while maintaining forced response at an acceptable level. |
| File Size | 1792188 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810007977 |
| Archival Resource Key | ark:/13960/t9x10x95m |
| Language | English |
| Publisher Date | 1981-01-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Turbomachine Blades Incompressible Flow Cascade Flow Forced Vibration Turbofan Engines Flutter Mathematical Models Torsional Vibration Aeroelasticity Bending Vibration Tuning Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
