Coupled Blade-Disk-Shroud Flutter Instabilities in Turbojet Engine RotorsSource: Journal of Engineering for Gas Turbines and Power:;1967:;volume( 089 ):;issue: 003::page 419Author:F. O. Carta
DOI: 10.1115/1.3616708Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An energy method is used to investigate a flutter instability of turbojet engine rotors which is caused by the interactions between unsteady air loading and the coupled vibration modes of the rotating blade-disk-shroud system. It is shown, analytically, in this parametric study that under certain circumstances the coupling between blade modes permits the transfer of energy from the air to the blade-disk-shroud system, giving rise to a self-excited instability. Both unsteady potential flow theory and empirical data for oscillating airfoils at high incidence are used.
keyword(s): Engines , Flutter (Aerodynamics) , Rotors , Disks , Blades , Turbojets , Airfoils , Vibration , Flow (Dynamics) AND Energy transformation ,
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| contributor author | F. O. Carta | |
| date accessioned | 2017-05-08T23:53:02Z | |
| date available | 2017-05-08T23:53:02Z | |
| date copyright | July, 1967 | |
| date issued | 1967 | |
| identifier issn | 1528-8919 | |
| identifier other | JETPEZ-26661#419_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/118456 | |
| description abstract | An energy method is used to investigate a flutter instability of turbojet engine rotors which is caused by the interactions between unsteady air loading and the coupled vibration modes of the rotating blade-disk-shroud system. It is shown, analytically, in this parametric study that under certain circumstances the coupling between blade modes permits the transfer of energy from the air to the blade-disk-shroud system, giving rise to a self-excited instability. Both unsteady potential flow theory and empirical data for oscillating airfoils at high incidence are used. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Coupled Blade-Disk-Shroud Flutter Instabilities in Turbojet Engine Rotors | |
| type | Journal Paper | |
| journal volume | 89 | |
| journal issue | 3 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.3616708 | |
| journal fristpage | 419 | |
| journal lastpage | 426 | |
| identifier eissn | 0742-4795 | |
| keywords | Engines | |
| keywords | Flutter (Aerodynamics) | |
| keywords | Rotors | |
| keywords | Disks | |
| keywords | Blades | |
| keywords | Turbojets | |
| keywords | Airfoils | |
| keywords | Vibration | |
| keywords | Flow (Dynamics) AND Energy transformation | |
| tree | Journal of Engineering for Gas Turbines and Power:;1967:;volume( 089 ):;issue: 003 | |
| contenttype | Fulltext |