Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method
Abstract In this study, the aeroelastic response of a wing-pylon-nacelle system in subsonic and low supersonic flow regimes is analyzed using the continuation method in conjunction with an adaptive step size control algorithm. Idealizing the pylon and nacelle as a point mass, the computed effects of...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-07-01
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| Series: | Advances in Aerodynamics |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42774-023-00152-2 |
| _version_ | 1797773904454877184 |
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| author | Qijing Yu M. Damodaran B. C. Khoo |
| author_facet | Qijing Yu M. Damodaran B. C. Khoo |
| author_sort | Qijing Yu |
| collection | DOAJ |
| description | Abstract In this study, the aeroelastic response of a wing-pylon-nacelle system in subsonic and low supersonic flow regimes is analyzed using the continuation method in conjunction with an adaptive step size control algorithm. Idealizing the pylon and nacelle as a point mass, the computed effects of a standard structural analysis of the wing together with the pylon and nacelle are compared with those of a clean wing to build a reduced-order model for analysis. The aerodynamic forces relating to different reduced frequencies are assessed using the Doublet Lattice Method (DLM) in the subsonic flow regime and supersonic lifting surface theory relying on the unsteady linearized small-disturbance potential flow model in the low supersonic flow regime. The Rational Function Approximation (RFA) method is then utilized for the state-space formulation of the system equations, appended with the continuation method for flutter prediction. Thereafter, the linearized aeroelastic equations are resolved using the continuation method with adaptive step size, the results of which are matched with those obtained from the traditional p-k method to emphasize that the continuation method exhibits a distinct advantage in achieving better accuracy in estimating the flutter speed and identifying the “mode switching” phenomenon. |
| first_indexed | 2024-03-12T22:13:14Z |
| format | Article |
| id | doaj.art-b62f3256a6d74bf2a990fef04eb8ea46 |
| institution | Directory Open Access Journal |
| issn | 2524-6992 |
| language | English |
| last_indexed | 2024-03-12T22:13:14Z |
| publishDate | 2023-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Advances in Aerodynamics |
| spelling | doaj.art-b62f3256a6d74bf2a990fef04eb8ea462023-07-23T11:27:39ZengSpringerOpenAdvances in Aerodynamics2524-69922023-07-015112410.1186/s42774-023-00152-2Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation methodQijing Yu0M. Damodaran1B. C. Khoo2Department of Mechanical Engineering, The Open University of ChinaTemasek Laboratories, National University of SingaporeTemasek Laboratories, National University of SingaporeAbstract In this study, the aeroelastic response of a wing-pylon-nacelle system in subsonic and low supersonic flow regimes is analyzed using the continuation method in conjunction with an adaptive step size control algorithm. Idealizing the pylon and nacelle as a point mass, the computed effects of a standard structural analysis of the wing together with the pylon and nacelle are compared with those of a clean wing to build a reduced-order model for analysis. The aerodynamic forces relating to different reduced frequencies are assessed using the Doublet Lattice Method (DLM) in the subsonic flow regime and supersonic lifting surface theory relying on the unsteady linearized small-disturbance potential flow model in the low supersonic flow regime. The Rational Function Approximation (RFA) method is then utilized for the state-space formulation of the system equations, appended with the continuation method for flutter prediction. Thereafter, the linearized aeroelastic equations are resolved using the continuation method with adaptive step size, the results of which are matched with those obtained from the traditional p-k method to emphasize that the continuation method exhibits a distinct advantage in achieving better accuracy in estimating the flutter speed and identifying the “mode switching” phenomenon.https://doi.org/10.1186/s42774-023-00152-2AeroelasticityContinuation method with adaptive step-sizeFlutter |
| spellingShingle | Qijing Yu M. Damodaran B. C. Khoo Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method Advances in Aerodynamics Aeroelasticity Continuation method with adaptive step-size Flutter |
| title | Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method |
| title_full | Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method |
| title_fullStr | Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method |
| title_full_unstemmed | Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method |
| title_short | Predicting wing-pylon-nacelle configuration flutter characteristics using adaptive continuation method |
| title_sort | predicting wing pylon nacelle configuration flutter characteristics using adaptive continuation method |
| topic | Aeroelasticity Continuation method with adaptive step-size Flutter |
| url | https://doi.org/10.1186/s42774-023-00152-2 |
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