Numerical Investigation into Flutter and Flutter-Buffet Phenomena for a Swept Wing and a Curved Planform Wing
| Autor: | Salvatore Bonomo, Mario Rosario Chiarelli |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Article Subject
lcsh:Motor vehicles. Aeronautics. Astronautics Aerospace Engineering swept wing 02 engineering and technology Computational fluid dynamics swept wing curved planform wing flutter transonic buffet LCO 01 natural sciences Instability 010305 fluids & plasmas 0203 mechanical engineering 0103 physical sciences Swept wing Wing transonic buffet business.industry Structural engineering Aerodynamics LCO curved planform wing 020303 mechanical engineering & transports flutter Drag Flutter lcsh:TL1-4050 business Transonic Geology |
| Zdroj: | International Journal of Aerospace Engineering, Vol 2019 (2019) |
| ISSN: | 1687-5974 1687-5966 |
| Popis: | The results of numerical studies carried out on high-aspect-ratio wings with different planforms are discussed: the transonic regime is analysed for a swept wing and a curved planform wing. The wings have similar aspect ratios and similar aerodynamic profiles. The analyses were carried out by CFD and FE techniques, and the reliability of the numerical aerodynamic results was proven by a sensitivity study. Analysing the performances of the two wings demonstrated that in transonic flight conditions, a noticeable drag reduction can be obtained by adopting a curved planform wing. In addition, for such a wing, the aeroelastic instability condition, consisting in a classical flutter, is postponed compared to a conventional swept wing, for which a flutter-buffet instability occurs. In a preliminary manner, the study shows that, for a curved planform wing, the high speed buffet is not an issue and at the same time notable fuel saving can be achieved. |
| Databáze: | OpenAIRE |
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