Print Email Facebook Twitter Preliminary aeroelastic design framework for composite wings subjected to gust loads Title Preliminary aeroelastic design framework for composite wings subjected to gust loads Author Rajpal, D. (TU Delft Aerospace Structures & Computational Mechanics) De Breuker, R. (TU Delft Aerospace Structures & Computational Mechanics) Date 2017 Abstract Including a gust analysis in an optimization framework is computationally inefficient as the critical load cases are not known a priori and hence a large number of points within the flight envelope have to be analyzed. Model order reduction techniques can provide significant improvement in computational efficiency of an aeroelastic analysis. In this paper a reduced order aeroelastic model is formulated by reducing the aerodynamic system with a balancedproper orthogonal decomposition and coupling it to a structural solver. It is demonstrated that the dominant modes of the aerodynamic model can be assumed to be constant for varying equivalent airspeed and Mach number, enabling the use of a single reduced model for the entire flight envelope. Comparison of the results from the full and reduced order aeroelastic model shows a high accuracy of the latter and a large saving in computational cost. A dynamic aeroelastic optimization framework is then formulated using the reduced order aeroelastic model. Results show that both dynamic and static loads play a role in optimization of the wing structure. Furthermore, the worst case gust loads change during the optimization process and henceit is important to identify the critical loads at every iteration in the optimization. To reference this document use: http://resolver.tudelft.nl/uuid:adf1a7f9-c16e-4a7e-97e1-e0b2e9262cbf Source International Forum on Aeroelasticity and Structural Dynamics: IFASD 2017, 25-28 June 2017 Como, Italy Event 17th International Forum on Aeroelasticity and Structural Dynamics, 2017-06-25 → 2017-06-28, Como, Italy Part of collection Institutional Repository Document type conference paper Rights © 2017 D. Rajpal, R. De Breuker Files PDF IFASD_2017_160.pdf 5.52 MB Close viewer /islandora/object/uuid:adf1a7f9-c16e-4a7e-97e1-e0b2e9262cbf/datastream/OBJ/view