This paper presents a new methodology for efficient multi body modeling and simulation of flap systems, which is used to determine dynamic effects that occur in operating cases and especially in several failure cases. This methodology can be used in aircraft development process of high lift systems for early estimation of dynamic loads and effects as well as for simplification of complex certification tests. The model that is presented consists of rigid bodies and of flexible bodies that result from a modal analysis of finite element models of arbitrary size. These finite element models are integrated into the multi body simulation in a runtime efficient way. For efficient, traceable and reusable model file creation for future aircraft projects a tool was developed that uses a structure of data files, model topology templates and general model element files. This approach permits a stepwise refinement in level of detail by usage of a persistent set of data. Furthermore the tool contains verified definitions for complex submodels that can be reused if required. Comparisons of test and simulation runs showed that this approach is suitable for accurate determination of the system dynamics. Further developments will focus on the extension of the model by effects that occur in flight. These effects are wing deformation and a distributed aerodynamic pressure load that is dependent on the deformation of the flaps themselves and thus the resulting gap and overlap of the slotted high lift devices.
Parametric modelling and experimental validation of multi body simulations of elastic flap systems in transport aircraft
2007
10 Seiten, 10 Bilder, 6 Quellen
Aufsatz (Konferenz)
Englisch
Flap Systems on Supersonic Transport Aircraft
British Library Online Contents | 1996
|Flap Systems on Supersonic Transport Aircraft
British Library Conference Proceedings | 1996
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