This paper presents an efficient algorithm for the nonlinear aeroelastic trim analysis of very flexible aircraft described by detailed models. The algorithm is based on a novel inertia relief technique for large displacements and is applicable to fluid-structure iteration frameworks coupling generic structural and aerodynamic solvers, including high-fidelity commercial solvers. The methodology is tested on a low-order model of the University of Michigan's X-HALE in order to compare with reference results for a typical steady rectilinear flight condition. Nonlinear aeroelastic trim analyses conducted at different flight speeds show that the proposed approach gives a smooth and fast convergence to the trim solution, which makes it suitable for high-fidelity aeroelastic design of very flexible aircraft.

Nonlinear aeroelastic trim of very flexible aircraft described by detailed models / Riso, C.; Di Vincenzo, F. J.; Ritter, M.; Cesnik, C. E. S.; Mastroddi, F.. - In: JOURNAL OF AIRCRAFT. - ISSN 0021-8669. - ELETTRONICO. - 55:6(2018), pp. 2338-2346. [10.2514/1.C034787]

Nonlinear aeroelastic trim of very flexible aircraft described by detailed models

Riso C.;Mastroddi F.
2018

Abstract

This paper presents an efficient algorithm for the nonlinear aeroelastic trim analysis of very flexible aircraft described by detailed models. The algorithm is based on a novel inertia relief technique for large displacements and is applicable to fluid-structure iteration frameworks coupling generic structural and aerodynamic solvers, including high-fidelity commercial solvers. The methodology is tested on a low-order model of the University of Michigan's X-HALE in order to compare with reference results for a typical steady rectilinear flight condition. Nonlinear aeroelastic trim analyses conducted at different flight speeds show that the proposed approach gives a smooth and fast convergence to the trim solution, which makes it suitable for high-fidelity aeroelastic design of very flexible aircraft.
2018
nonlinear aeroelasticity; trimmed solution; very flexible aircraft
01 Pubblicazione su rivista::01a Articolo in rivista
Nonlinear aeroelastic trim of very flexible aircraft described by detailed models / Riso, C.; Di Vincenzo, F. J.; Ritter, M.; Cesnik, C. E. S.; Mastroddi, F.. - In: JOURNAL OF AIRCRAFT. - ISSN 0021-8669. - ELETTRONICO. - 55:6(2018), pp. 2338-2346. [10.2514/1.C034787]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1109831
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