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EV-55 aircraft modification for water level landing
Šponer, Jan ; Vaněk, František (oponent) ; Chybík, Ladislav (vedoucí práce)
Modification of the contemporary terrestrial version of EV-55 aeroplane for the possibility of water level landing is considered in this Masters Thesis. The aim is to find a design solution which does not lead to significant structural modifications in the airframe and meet Certification Specification 23 (CS 23). Weight analysis of the modified aeroplane is made and the water loads determined in accordance with CS 23. The connecting frame is designed in accordance with water loads and stress analysis for each element and fastener is performed. These values are compared with ground loads. Finally, flight performance, such as maximal horizontal speed, rate of climb, range and endurance are determined.
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Comparison of analytical and numerical FEM solutions for buckling of laminated composite cylindrical shells
Konečný, Michael ; Obdržálek, Vít (oponent) ; Vrbka, Jan (vedoucí práce)
This thesis studies the possibilities of determination of the critical buckling force of laminated composite cylindrical shells through analytical as well as through FEM approcah. The analytical solution is presented in detail and a Matlab program is made to allow its calculation. FEM solutions are done using two different solvers of the MSC.Nastran software, the effects of different settings of the solvers are explored as well as the general behaviour of the solvers. All of the approaches are in the end compared and a several conclusions are proposed.
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EV-55 aircraft modification for water level landing
Šponer, Jan ; Vaněk, František (oponent) ; Chybík, Ladislav (vedoucí práce)
Modification of the contemporary terrestrial version of EV-55 aeroplane for the possibility of water level landing is considered in this Masters Thesis. The aim is to find a design solution which does not lead to significant structural modifications in the airframe and meet Certification Specification 23 (CS 23). Weight analysis of the modified aeroplane is made and the water loads determined in accordance with CS 23. The connecting frame is designed in accordance with water loads and stress analysis for each element and fastener is performed. These values are compared with ground loads. Finally, flight performance, such as maximal horizontal speed, rate of climb, range and endurance are determined.
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Comparison of analytical and numerical FEM solutions for buckling of laminated composite cylindrical shells
Konečný, Michael ; Obdržálek, Vít (oponent) ; Vrbka, Jan (vedoucí práce)
This thesis studies the possibilities of determination of the critical buckling force of laminated composite cylindrical shells through analytical as well as through FEM approcah. The analytical solution is presented in detail and a Matlab program is made to allow its calculation. FEM solutions are done using two different solvers of the MSC.Nastran software, the effects of different settings of the solvers are explored as well as the general behaviour of the solvers. All of the approaches are in the end compared and a several conclusions are proposed.
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