Aeroelastic Calculations for the Hawk Aircraft Using the Euler Equations
This paper demonstrates coupled time domain computational fluid dynamics (CFD) and computational structural dynamics simulations for flutter analysis of a real aircraft in the transonic regime. It is shown that a major consideration for a certain class of structural models is the transformation meth...
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| Veröffentlicht in: | Journal of aircraft 2005-07, Vol.42 (4), p.1005-1012 |
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| container_end_page | 1012 |
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| container_issue | 4 |
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| container_title | Journal of aircraft |
| container_volume | 42 |
| creator | Woodgate, M. A Badcock, K. J Rampurawala, A. M Richards, B. E Nardini, D Henshaw, M. J. deC |
| description | This paper demonstrates coupled time domain computational fluid dynamics (CFD) and computational structural dynamics simulations for flutter analysis of a real aircraft in the transonic regime. It is shown that a major consideration for a certain class of structural models is the transformation method, which is used to pass information between the fluid and structural grids. The aircraft used for the calculations is the BAE Systems Hawk. A structural model, which has been developed by BAE Systems for simplified linear flutter calculations, only has a requirement for (unknown symbol)(10) degrees of freedom. There is a significant mismatch between this and the surface grid on which loads and deflections are defined in the CFD calculation. This paper extends the constant volume tetrahedron tranformation, previously demonstrated for wing only aeroelastic calculations, to multicomponent, or full aircraft, cases and demonstrates this for the Hawk. A comparison is made with the predictions of a linear flutter code. [PUBLICATION ABSTRACT] |
| doi_str_mv | 10.2514/1.5608 |
| format | Article |
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A ; Badcock, K. J ; Rampurawala, A. M ; Richards, B. E ; Nardini, D ; Henshaw, M. J. deC</creator><creatorcontrib>Woodgate, M. A ; Badcock, K. J ; Rampurawala, A. M ; Richards, B. E ; Nardini, D ; Henshaw, M. J. deC</creatorcontrib><description>This paper demonstrates coupled time domain computational fluid dynamics (CFD) and computational structural dynamics simulations for flutter analysis of a real aircraft in the transonic regime. It is shown that a major consideration for a certain class of structural models is the transformation method, which is used to pass information between the fluid and structural grids. The aircraft used for the calculations is the BAE Systems Hawk. A structural model, which has been developed by BAE Systems for simplified linear flutter calculations, only has a requirement for (unknown symbol)(10) degrees of freedom. There is a significant mismatch between this and the surface grid on which loads and deflections are defined in the CFD calculation. This paper extends the constant volume tetrahedron tranformation, previously demonstrated for wing only aeroelastic calculations, to multicomponent, or full aircraft, cases and demonstrates this for the Hawk. A comparison is made with the predictions of a linear flutter code. 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A structural model, which has been developed by BAE Systems for simplified linear flutter calculations, only has a requirement for (unknown symbol)(10) degrees of freedom. There is a significant mismatch between this and the surface grid on which loads and deflections are defined in the CFD calculation. This paper extends the constant volume tetrahedron tranformation, previously demonstrated for wing only aeroelastic calculations, to multicomponent, or full aircraft, cases and demonstrates this for the Hawk. A comparison is made with the predictions of a linear flutter code. 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| ispartof | Journal of aircraft, 2005-07, Vol.42 (4), p.1005-1012 |
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| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Aerodynamics Eulers equations Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) General theory Military aircraft Physics Solid mechanics Structural and continuum mechanics Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...) |
| title | Aeroelastic Calculations for the Hawk Aircraft Using the Euler Equations |
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