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ORBi Open Repository and Bibliography (273.094 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Engineering, computing & technology => Aerospace & aeronautics engineering

Mostrando recursos 1 - 20 de 972

  1. Power Processing Unit Activities at Thales Alenia Space Belgium

    Bourguignon, Eric; Defise, Jean-Marc; Fraselle, Stéphane

  2. Power Processing Unit Activities at Thales Alenia Space Belgium

    Bourguignon, Eric; Defise, Jean-Marc; Fraselle, Stéphane; Scalais, Thierry

  3. Finite element model reduction for space thermal analysis

    Jacques, Lionel; Béchet, Eric; Kerschen, Gaëtan
    Peer reviewed

  4. The filter wheel and filters development for the X-IFU instruments onboard Athena

    Bozzo, E.; Barbera, M.; Genolet, L.; Paltani, S.; Sordet, M.; Branduardi-Raymont, G.; Rauw, Grégor; Sciortino, S.; Barret, D.; Den Herder, J. W.
    Athena is the large mission selected by ESA in 2013 to investigate the science theme "Hot and Energetic Universe" and presently scheduled for launch in 2028. One of the two instruments located at the focus of the 12 m-long Athena telescope is the X-ray Integral Field Unit (X-IFU). This is an array of TES microcalorimeters that will be operated at temperatures of 50 mK in order to perform high resolution spectroscopy with an energy resolution down to 2.5 eV at energies < 7 keV. In order to cope with the large dynamical range of X-ray fluxes spanned by the celestial...

  5. Experimental Assessment of The Influence of Interface Geometries on Structural Response

    Dossogne, Tilàn; Jerome, Trevor; Lancereau, Damien; Smith, Scott Alan; Brake, Matthew; Pacini, Ben; Reuss, Pascal; Schwinshackl, Christoph

  6. Space Thermal Analysis through Reduced Finite Element Modelling

    Jacques, Lionel
    The finite element method (FEM) is widely used in mechanical engineering, in particular for structure design. However, it is not often exploited for the thermal analysis of space structures for which the use of the lumped parameter method is still commonplace. To alleviate the computational burden of the FEM for thermal analyses involving conduction and radiation, an innovative global conductive-radiative reduction scheme based on the clustering of the finite element mesh is presented. The proposed method leads to a significant reduction of the number of radiative exchange factors (REFs) to compute and size of the corresponding matrix. It further keeps...

  7. Experimental modal identification of mistuning in an academic two-stage drum

    Nyssen, Florence; Epureanu, Bogdan; Golinval, Jean-Claude
    Peer reviewed

  8. Identification of non-stationary dynamical systems using multivariate ARMA models

    Bertha, Mathieu; Golinval, Jean-Claude
    Peer reviewed

  9. Two-domain and three-domain limit cycles in a typical aeroelastic system with freeplay in pitch

    Verstraelen, Edouard; Dimitriadis, Grigorios; Dal Ben Rossetto, Gustavo; Dowell, Earl H.
    Peer reviewed

  10. Analysis of the Nonlinear Dynamics of an F-16 Aircraft Using the NI2D Toolbox

    Detroux, Thibaut; Dossogne, Tilàn; Masset, Luc; Noël, Jean-Philippe; Kerschen, Gaëtan

  11. Study of the possibility to use a RADAR in a dedicated mission to explore the Pioneer anomaly

    Defrere, Denis
    Report of Denis Defrère’s training period performed in the Advanced Concepts Team (ESTEC-ESA).

  12. Preliminary assessment of the possibilities of the Particle Finite Element Method in the numerical simulation of bird impact on aeronautical structures

    Cerquaglia, Marco Lucio; Deliège, Geoffrey; Boman, Romain; Ponthot, Jean-Philippe
    Peer reviewed

  13. FLYCOAT - Programme d'excellence : Rapport scientifique et technique 1°phase 1er Mars 2015 au 29 Février 2016

    Dedry, Olivier; Mertens, Anne; Lecomte-Beckers, Jacqueline
    Le projet FLYCOAT innovera dans les domaines suivants : - Résistance à l’usure : améliorer les revêtements existants par des procédés de fabrication innovants, pour répondre à des propriétés spécifiques, comme la tenue à l’érosion et à l’impact (grêle, gravillonnage) - Protection anti-corrosion : obtenir des performances équivalentes aux systèmes actuels en l’absence de chromates - Propriétés électriques : conférer des propriétés antistatiques - Propriétés thermiques : améliorer la résistance à la thermo-oxidation et au cyclage thermique. - Résistance aux liquides aéronautiques.

  14. OUFTI-1 : comment les étudiants belges ont envoyé un satellite en orbite

    Verly, Jacques; Kerschen, Gaëtan; Werner, Xavier; De Dijcker, Sébastien; Broun, Valery

  15. Research on Fast Aeroelastic Modeling Methods in the Transonic Regime

    Güner, Hüseyin; Dimitriadis, Grigorios; Terrapon, Vincent

  16. Dynamic interactions of a supercritical aerofoil in the presence of transonic shock buffet

    Giannelis, N. F.; Vio, G. A.; Dimitriadis, Grigorios
    Within a narrow transonic flight region, shock-wave/boundary-layer interactions yield large amplitude, self sustained shock oscillations that are detrimental to both platform handling quality and structural integrity. In this study, the aeroelastic interactions between this transonic buffet instability and a spring-suspended supercritical aerofoil are investigated by means of Reynolds-Averaged Navier-Stokes simulations. Single degree-of-freedom pitching simulations are performed for a range of structural to aerodynamic frequency ratios, sectional mass ratios and levels of structural damping. The results show that for a range of pitch eigenfrequencies above the fundamental buffet frequency, sychronisation of the aerodynamic and structural modes occurs. This so called lock-in...

  17. Microstructural design using stress–based topology optimization

    Collet, Maxime; Bruggi, Matteo; Noël, Lise; Bauduin, Simon; Duysinx, Pierre
    New additive manufacturing techniques break the limitations encountered for years when producing components descending from topology optimization. Classical design procedures focus on macro-structural optimization to sustain given loads but today innovative manufacturing processes allow considering structures exhibiting tailored microstructures, i.e. the well known microstructural design. The practical applications of structures including material design is mainly motivated by the greater performances that can be achieved compared to classical solutions. Microstructural design has been shown a great interest as attested by recent works. However, stress–based topology optimization has not yet been extensively exploited when addressing microstructural design using numerical homogenization though stress...

  18. Design of microstructures using stress-based topology optimization

    Collet, Maxime; Bruggi, Matteo; Noël, Lise; Bauduin, Simon; Duysinx, Pierre
    This paper aims at designing microstructures using stress-based topology optimization. Most of the developments so far have been made for compliance design in various field of applications as reflected in the literature. The emergence of the new additive manufacturing techniques allows to consider porous material, such as lattice structures for instance, which ca be used for the design of structural components subject to various solicitations. Those components must account for the stress level to prevent failure everywhere in the microstructures and by extension the whole structure itself. This work proposes to design such microstructures using topology optimization with limitation on...

  19. Steady Aerodynamic Modeling for Preliminary Aircraft Design

    Crovato, Adrien; Dimitriadis, Grigorios; Terrapon, Vincent

  20. Aeroservoelastic Simulations for Horizontal Axis Wind Turbines

    Prasad, Chandra Shekhar; Chen, Qiong Zhong; Bruls, Olivier; D'Ambrosio, Flavio; Dimitriadis, Grigorios
    Peer reviewed

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