A strategy for computing aeroelastic solutions is proposed. An implicit LU fac-torisation scheme for solving the time dependent Euler equations on unstructured triangular meshes is presented and coupled with a typical section aeroelastic wing model. EEciency is improved by coupling the LU factorisation scheme with a GM-RES algorithm. In this case the LU scheme plays the role of a preconditioner...

This work is focused on the implementation of a general multibody analysis framework for the real-time simulation of complex systems. It is applied to the modeling of the Semi-Articulated Soft-InPlane (SASIP) rotor recently installed and tested on the Wing and Rotor Aeroelastic Testing System (WRATS) at NASA Langley. The aim is to obtain a detailed, yet efficient virtual experiment, based on st...

Despite the benefits of composite structures, it is only recently that the main load bearing structures in large aircraft such as the Boeing 787 and Airbus A350 have started to be manufactured using carbon fibre composites. Even then, the unique directionality properties of composite laminates and design possibilities have yet to be exploited to improve the aircraft performance. In this study a...

Imagine yourself looking out the window on a commercial flight at the aircraft engine outside. For four years, I worked at Honeywell Aerospace as product design engineer in a research team investigating flutter and forced response issues in turbomachinery for aircraft engines. Flutter is an aeroelastic issue that can cause near-instantaneous and catastrophic part failure. It results from the un...

This paper presents a novel application of multiparameter spectral theory to the study of structural stability, with particular emphasis on aeroelastic flutter. Methods of multiparameter analysis allow the development of new solution algorithms for aeroelastic flutter problems; most significantly, a direct solver for polynomial problems of arbitrary order and size, something which has not befor...

Background: Left ventricular torsion is one of the most important biomechanical parameters of heart that routinely is measured in short axis view.  A review of the literature has indicated that assessment of left ventricular torsion in short axis view has some limitations. In the present study, we evaluated whether torsion angle assessment in long axis view can be used as a diagnostic biomechan...

ABSTRACT: An approximate approach for the frequencyand time-domain aeroelastic analysis of bridge decks is presented. The aerodynamic transfer functions are approximated as a linear function with the coefficients determined through minimization of the weighted error between the exact and approximated transfer function. The weighting function in optimization is introduced for the improved approx...

This paper considers the control of coupled aeroelastic aircraft model with Variable Camber Continuous Trailing Edge Flap (VCCTEF) system. The relative motion between two adjacent flaps is constrained and this actuation constraint problem is converted into an output covariance constraint problem, and therefore can be formulated using linear matrix inequalities (LMIs). A set of LMI conditions is...

This paper presents multi-objective topology and sizing optimization of a morphing wing structure. The purpose this is to design new aircraft structure with tapered shape for ribs, spars, skins including torsion beam external actuating torques, which anticipated modify the aeroelastic characteristic using optimization. Two problems are proposed employing ground element structures high- low-grid...

This article presents the application of aeroelastic tailoring in design wings for a flying demonstrator, as well validation methodology with flight test results. The investigations were performed FLEXOP project (Flutter Free Flight Envelope Expansion Economical Performance Improvement), funded under Horizon 2020 framework. aimed at methods and tools active flutter control, demonstration potent...