An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations
The nonlinear limit-cycle oscillations induced by aileron rotational freeplay are investigated by numerical simulation and flutter wind tunnel tests. An integrated nonlinear aeroelastic analysis method and procedure based on the nonlinear system identification technology is proposed. Based on the ch...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/5195030 |
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| _version_ | 1832549018729709568 |
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| author | Yukai Sun Zhigang Wu Chao Yang Xiangyu Wang Chuansheng Wang |
| author_facet | Yukai Sun Zhigang Wu Chao Yang Xiangyu Wang Chuansheng Wang |
| author_sort | Yukai Sun |
| collection | DOAJ |
| description | The nonlinear limit-cycle oscillations induced by aileron rotational freeplay are investigated by numerical simulation and flutter wind tunnel tests. An integrated nonlinear aeroelastic analysis method and procedure based on the nonlinear system identification technology is proposed. Based on the characteristics of the structure, a low-speed nonlinear flutter wing-aileron model that considers both the linear flutter test and the nonlinear limit-cycle oscillation test with aileron rotational freeplay is designed. The wind tunnel tests are conducted with the model, and the stable limit-cycle oscillation is observed by accelerometers under the linear flutter boundary with a 0° angle of attack. Higher-order harmonic vibration is also observed with a low proportion compared to the fundamental oscillation, and the limit-cycle oscillation grows gradually with the increase of airspeed until flutter occurs. The comparison of numerical and experimental investigation shows high consistency. |
| format | Article |
| id | doaj-art-3948c02d95404303bac81dbb1c96cabb |
| institution | Kabale University |
| issn | 1687-5974 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-3948c02d95404303bac81dbb1c96cabb2025-02-03T06:12:26ZengWileyInternational Journal of Aerospace Engineering1687-59742022-01-01202210.1155/2022/5195030An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle OscillationsYukai Sun0Zhigang Wu1Chao Yang2Xiangyu Wang3Chuansheng Wang4Aviation Industry Development Research Center of ChinaSchool of Aeronautic Science and EngineeringSchool of Aeronautic Science and EngineeringSchool of Aeronautic Science and EngineeringAviation Industry Development Research Center of ChinaThe nonlinear limit-cycle oscillations induced by aileron rotational freeplay are investigated by numerical simulation and flutter wind tunnel tests. An integrated nonlinear aeroelastic analysis method and procedure based on the nonlinear system identification technology is proposed. Based on the characteristics of the structure, a low-speed nonlinear flutter wing-aileron model that considers both the linear flutter test and the nonlinear limit-cycle oscillation test with aileron rotational freeplay is designed. The wind tunnel tests are conducted with the model, and the stable limit-cycle oscillation is observed by accelerometers under the linear flutter boundary with a 0° angle of attack. Higher-order harmonic vibration is also observed with a low proportion compared to the fundamental oscillation, and the limit-cycle oscillation grows gradually with the increase of airspeed until flutter occurs. The comparison of numerical and experimental investigation shows high consistency.http://dx.doi.org/10.1155/2022/5195030 |
| spellingShingle | Yukai Sun Zhigang Wu Chao Yang Xiangyu Wang Chuansheng Wang An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations International Journal of Aerospace Engineering |
| title | An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations |
| title_full | An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations |
| title_fullStr | An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations |
| title_full_unstemmed | An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations |
| title_short | An Integrated Test-Based Nonlinear Aeroelastic Analysis Method to Freeplay-Induced Limit-Cycle Oscillations |
| title_sort | integrated test based nonlinear aeroelastic analysis method to freeplay induced limit cycle oscillations |
| url | http://dx.doi.org/10.1155/2022/5195030 |
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