An optimized doublet-lattice method correction approach for a large civil aircraft

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This paper presents an efficient correction technique for doublet-lattice method,
where linearized frequency domain analysis have been used to compute the aerodynamic data
for the corrections. This substantially reduces the computational cost necessary to define the
corrected Aerodynamic Interference Coefficients matrices. The results obtained from the corrected
doublet-lattice method are compared to the fully coupled CFD/FEM solution performed
using the Alpes Fluid Structure Interaction Interface. The application of this method to two test
cases, representative of civil jet airliner in cruise condition, in transonic regime, is presented.
The first test case is an Euler simulation for the FFAST right wing model, while the second
presents preliminary results obtained using a viscous simulation for the NASA common research
model. The aeroelastic loads analysis for three different gust lengths, as prescribed by
the CS-25, are presented and discussed.
Original languageEnglish
Title of host publicationInternational Forum on Aeroelasticity and Structural Dynamics (IFASD)
Place of PublicationComo - Italy
Publication statusPublished - 28 Jun 2017

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