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ORBi Open Repository and Bibliography (287.666 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 1.096

  1. OUFTI-2: status report on the design and construction of the second educational nanosatellite featuring D-STAR amateur-radio communications

    De Dijcker, Sébastien; Broun, Valery; Werner, Xavier; Verly, Jacques
    Peer reviewed

  2. OUFTI-2 educational CubeSat project of University of Liège, Belgium

    Guillaume, Thibaut; Rikir, Adrien; De Dijcker, Sébastien; Werner, Xavier; Broun, Valery; Verly, Jacques

  3. Uncertainty Quantification of Aerothermal Flow Simulation Through Low-Density Ablative Thermal Protection Materials

    Coheur, Joffrey; Arnst, Maarten; Chatelain, Philippe; Magin, Thierry

  4. Vortex Lattice simulations of attached and separated flows around flapping wings

    Lambert, Thomas; Abdul Razak, Norizham; Dimitriadis, Grigorios
    Peer reviewed

  5. Application of a 3D unsteady surface panel method with flow separation model to horizontal axis wind turbines

    Prasad, Chandra Shekhar; Dimitriadis, Grigorios
    Peer reviewed

  6. Numerical simulations of a non-charring ablator in high enthalpy flows by means of a unified flow-material solver

    Schrooyen, Pierre; Coheur, Joffrey; Turchi, Alessandro; Magin, Thierry

  7. PIV-based estimation of unsteady loads on a flat plate at high angle of attack using momentum equation approaches

    Guissart, Amandine; Bernal, Luis; Dimitriadis, Grigorios; Terrapon, Vincent
    Peer reviewed

  8. Introduction to Nonlinear Aeroelasticity

    Dimitriadis, Grigorios
    Nonlinear aeroelasticity has become an increasingly popular research area over the last 20-30 years. There have been many driving forces behind this development, including faster computers, increasingly flexible structures, automatic control systems for aircraft and other engineering products, new materials with nonlinear characteristics etc. Introduction to Nonlinear Aeroelasticity covers the theoretical basics in nonlinear aeroelasticity and applies the theory to practical problems. As nonlinear aeroelasticity is a combined topic, necessitating expertise from different areas, this book also covers areas such as nonlinear dynamics, bifurcation analysis, numerical methods and others. The emphasis throughout is on the practical application of the theories...

  9. Flutter and limit cycle oscillation suppression using linear and nonlinear tuned vibration absorbers

    Verstraelen, Edouard; Kerschen, Gaëtan; Dimitriadis, Grigorios
    Aircraft are more than ever pushed to their limits for performance reasons. Consequently, they become increasingly nonlinear and they are more prone to undergo aeroelastic limit cycle oscillations. Structural nonlinearities affect aircraft such as the F-16, which can undergo store-induced limit cycle oscillations (LCOs). Furthermore, transonic buzz can lead to LCOs because of moving shock waves in transonic flight conditions on many aircraft. This study presents a numerical investigation of passive LCO suppression on a typical aeroelastic system with pitch and plunge degrees of freedom and a hardening stiffness nonlinearity. The absorber used is made of a piezoelectric patch glued to...

  10. Energy harvesting from galloping of prisms: A wind tunnel experiment

    Hémon, Pascal; Amandolèse, Xavier; Andrianne, Thomas
    Peer reviewed

  11. Heat conduction

    Fraeijs de Veubeke, Baudouin; Hogge, Michel

  12. Natural strains and stresses for trapezoidal structures analysis

    Fraeijs de Veubeke, Baudouin; Nguyen-Dang, Hung

  13. Structural dynamics : heat conduction

    Fraeijs de Veubeke, Baudouin; Géradin, Michel; Huck, A.; Hogge, Michel

  14. Structural dynamics

    Fraeijs de Veubeke, Baudouin; Géradin, Michel; Huck, A.

  15. B. M. Fraeijs de Veubeke memorial volume of selected papers

    Géradin, Michel; Fraeijs de Veubeke, Baudouin

  16. Robust mission design using invariant manifolds

    Dell'Elce, Lamberto; Baresi, Nicola; Kerschen, Gaëtan; Scheeres, Daniel J.
    Uncertainties in the dynamical system affect all real-life applications in astrodynamics. This is particularly true for satellites orbiting about small bodies owing to their irregular shapes and to the difficulties in characterizing their physical properties at the early stages of a dedicated spacecraft mission. Hence, accommodating uncertainty in the orbital design process may be extremely beneficial for the success of the mission. Here, in a Lyapunov stability perspective, the properties of the invariant manifolds are exploited to generate regions of the phase space where the motion is guaranteed to evolve despite the uncertainties in the system parameters and navigation errors....

  17. Application of Analytic Solution in Relative Motion to Spacecraft Formation Flying in Elliptic Orbit

    Cho, Hancheol; Park, Sang-Young; Choi, Kyu-Hong
    Peer reviewed

  18. How the lessons learned from the flight of the Belgian OUFTI-1 CubeSat are leading to an improved successor OUFTI-2 still featuring amateur-radio D-STAR communications

    Broun, Valery; De Dijcker, Sébastien; Werner, Xavier; Verly, Jacques
    Peer reviewed


    Prasad, Chandra Shekhar
    Wind energy is one of the most reliable renewable energy sources and constitutes a viable alternative to fossil and nuclear fuels for the generation of electricity. Over the last couple of decades the increasing demand for wind energy has resulted in increasingly large and sophisticated wind turbines. Accurate but efficient aerodynamic and aeroelastic modelling at the design stage has become a key issue. The surface panel and vortex lattice methods are efficient aerodynamic modelling tools that are routinely employed in design calculations by the aerospace industry. They constitute a good compromise between fidelity and computational cost in the preliminary design and optimization phase. However, these approaches have not been...

  20. Identification of complex nonlinearities using cubic splines with automatic discretization

    Dossogne, Tilàn; Noël, Jean-Philippe; Kerschen, Gaëtan
    One of the major challenges in nonlinear system identification is the selection of appropriate mathematical functions to model the observed nonlinearities. In this context, piecewise polynomials, or splines, offer a simple and flexible representation basis requiring limited prior knowledge. The generally-adopted discretization for splines consists in an even distribution of their control points, termed knots. While this may prove successful for simple nonlinearities, a more advanced strategy is needed for nonlinear restoring forces with strong local variations. The present paper specifically introduces a two-step methodology to select automatically the location of the knots. It proposes to derive an initial model,...

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