Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft
After creating a new Finite Elements Model (FEM) of the aircraft IAR-99 HAWK using special elements, the team decided to validate the results by performing a free-free vibrations analysis on this model. In this presentation we have described the finite elements used and their peculiarities, the fini...
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National Institute for Aerospace Research “Elie Carafoli” - INCAS
2024-12-01
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| Series: | INCAS Bulletin |
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| Online Access: | https://bulletin.incas.ro/files/vladimirescu-t__fuiorea__vladimirescu-t-jr__vol_16.pdf |
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| _version_ | 1846136601919356928 |
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| author | Tudor VLADIMIRESCU Ion FUIOREA Tudor VLADIMIRESCU-jr |
| author_facet | Tudor VLADIMIRESCU Ion FUIOREA Tudor VLADIMIRESCU-jr |
| author_sort | Tudor VLADIMIRESCU |
| collection | DOAJ |
| description | After creating a new Finite Elements Model (FEM) of the aircraft IAR-99 HAWK using special elements, the team decided to validate the results by performing a free-free vibrations analysis on this model. In this presentation we have described the finite elements used and their peculiarities, the finite elements model obtained for the aircraft IAR-99 HAWK and the results of the free-free vibrations analysis obtained in the empty equipped configuration. The results of the theoretical free-free vibrations obtained for the IAR-99 HAWK in the empty equipped configuration are presented and compared to those obtained from ground tests, thus confirming the accuracy of the new Finite Element Model (FEM). The aerodynamic idealization of the IAR-99 aircraft was made using the DLM method for subsonic flow, also considering the load-bearing surface/fuselage interference and aims to determine the generalized aerodynamic forces that occur on one mode of vibration due to the influence of another mode of vibration. The flutter calculation for the IAR-99 HAWK empty equipped configuration aircraft was made using the p-K methodology presented in the MSC.Nastran program, using the vibration modes obtained on the basis of the new finite element model and the matrix of generalized aerodynamic forces in subsonic flow. |
| format | Article |
| id | doaj-art-4638d7babca743dda3c556f848a0dbc6 |
| institution | Kabale University |
| issn | 2066-8201 2247-4528 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | National Institute for Aerospace Research “Elie Carafoli” - INCAS |
| record_format | Article |
| series | INCAS Bulletin |
| spelling | doaj-art-4638d7babca743dda3c556f848a0dbc62024-12-08T20:59:32ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282024-12-0116411712910.13111/2066-8201.2024.16.4.11Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration AircraftTudor VLADIMIRESCU0Ion FUIOREA1Tudor VLADIMIRESCU-jr23BLACK BUSINESS SOLUTIONS SRL, B-dul Iancu de Hunedoara, nr. 2, Bl. H8, Et. 5, Ap. 18, Bucharest, Romania, tudor.vladimirescu@gmail.comNational University of Science and Technology Politehnica of Bucharest, Splaiul Independentei 313, 060042, Bucharest, Romania3BLACK BUSINESS SOLUTIONS SRL, B-dul Iancu de Hunedoara, nr. 2, Bl. H8, Et. 5, Ap. 18, Bucharest, Romania, tudor.vladimirescu@gmail.com*, tudor.vladimirescu@3black.roAfter creating a new Finite Elements Model (FEM) of the aircraft IAR-99 HAWK using special elements, the team decided to validate the results by performing a free-free vibrations analysis on this model. In this presentation we have described the finite elements used and their peculiarities, the finite elements model obtained for the aircraft IAR-99 HAWK and the results of the free-free vibrations analysis obtained in the empty equipped configuration. The results of the theoretical free-free vibrations obtained for the IAR-99 HAWK in the empty equipped configuration are presented and compared to those obtained from ground tests, thus confirming the accuracy of the new Finite Element Model (FEM). The aerodynamic idealization of the IAR-99 aircraft was made using the DLM method for subsonic flow, also considering the load-bearing surface/fuselage interference and aims to determine the generalized aerodynamic forces that occur on one mode of vibration due to the influence of another mode of vibration. The flutter calculation for the IAR-99 HAWK empty equipped configuration aircraft was made using the p-K methodology presented in the MSC.Nastran program, using the vibration modes obtained on the basis of the new finite element model and the matrix of generalized aerodynamic forces in subsonic flow.https://bulletin.incas.ro/files/vladimirescu-t__fuiorea__vladimirescu-t-jr__vol_16.pdfaero elasticityfinite element methodfinite element modelfree-free vibrationsempty equipped configurationground vibration testssubsonic flowgeneralized aerodynamic forcesfluttermsc. nastran |
| spellingShingle | Tudor VLADIMIRESCU Ion FUIOREA Tudor VLADIMIRESCU-jr Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft INCAS Bulletin aero elasticity finite element method finite element model free-free vibrations empty equipped configuration ground vibration tests subsonic flow generalized aerodynamic forces flutter msc. nastran |
| title | Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft |
| title_full | Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft |
| title_fullStr | Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft |
| title_full_unstemmed | Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft |
| title_short | Flutter Analysis Based on the New Numerical Model IAR-99 HAWK Empty Equipped Configuration Aircraft |
| title_sort | flutter analysis based on the new numerical model iar 99 hawk empty equipped configuration aircraft |
| topic | aero elasticity finite element method finite element model free-free vibrations empty equipped configuration ground vibration tests subsonic flow generalized aerodynamic forces flutter msc. nastran |
| url | https://bulletin.incas.ro/files/vladimirescu-t__fuiorea__vladimirescu-t-jr__vol_16.pdf |
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