The development of a multi-level system for preliminary design of aircraft structures is proposed as part of a joint research project between the National Aerospace Laboratory (NLR) and the Faculty of Aerospace Engineering of Delft University of Technology. Modern computing facilities allow sophisticated methods such as finite element analysis to be used much earlier in the design process. The present system is essentially and extension of the existing Aircraft Design and Analysis System (ADAS). The FE-model can be automatically modified as a function of general design parameters such as wing area, sweepback angle, aspect ratio. Further work is being carried out to incorporate structural optimization. The paper describes the general philosophy as basis for the development of the system as well as topics for further research. The modified ADAS-system is described including the mesh generation procedure. Some structural analysis results are presented for a typical transport aircraft subject to static loads. In conclusion the mathematical implementation of structural optimization in a multi-level environment is outlined.
Structural Optimization in Preliminary Aircraft Design: A Finite Element Approach
1992
26 pages
Report
Keine Angabe
Englisch
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