Faculté des Sciences appliquées
Faculté des Sciences appliquées

Master thesis and internship[BR]- Master's thesis : Closed-loop active shape control actuator[BR]- Integration internship

Gillet, Simon ULiège
Promotor(s) : Collette, Christophe ULiège
Date of defense : 6-Sep-2021/7-Sep-2021 • Permalink :
Title : Master thesis and internship[BR]- Master's thesis : Closed-loop active shape control actuator[BR]- Integration internship
Translated title : [fr] Actionneur de forme à contrôle actif en boucle fermée
Author : Gillet, Simon ULiège
Date of defense  : 6-Sep-2021/7-Sep-2021
Advisor(s) : Collette, Christophe ULiège
Committee's member(s) : Loix, Nicolas 
Béchet, Eric ULiège
Bruls, Olivier ULiège
Language : English
Number of pages : 121
Keywords : [en] Actuator
[en] Sensor
[en] Bearings
Discipline(s) : Engineering, computing & technology > Civil engineering
Engineering, computing & technology > Aerospace & aeronautics engineering
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering"
Faculty: Master thesis of the Faculté des Sciences appliquées


[fr] Today, ecology and CO2 emissions are at the centre of many debates. Because the aviation sector is a large emitter of CO2, the main manufacturers of the industry are trying to reduce the fuel consumption of the aircraft and thus the CO2 emissions. One of the technologies studied is the Hybrid Laminar Flow Control system, a combination of Natural Laminar Flow and Laminar Flow Control. Sonaca, being one of these manufacturers, is developing a Natural Laminar Flow profile leading edge. To do so, Sonaca in collaboration with Micromega Dynamics has to correct the wrong shape of a leading edge using an active control mechanism during its manufacturing process.

A description and comparison of actuators, sensors, guiding mechanisms and architecture controls that can be used in an active shape control mechanism are performed. Based on this analysis, two active shape control mechanisms are studied. The first mechanism is composed of three actuators that activate (push or pull) a rigid body attached to the skin of the leading edge. The second mechanism acts directly on the skin by pushing or pulling perpendicularly to the desired skin shape.

Since the correction using the first mechanism requires large forces, two methodologies of optimization are developed. After some investigation, this mechanism did not allow to correct properly the local errors appearing on the skin. This mechanism is therefore abandoned. The characteristics required for the second mechanism favour the choice of an electromechanical actuator connected to a jackscrew and controlled with a LVDT sensor.



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  • Gillet, Simon ULiège Université de Liège > Master ingé. civ. aérospat., à fin.


Committee's member(s)

  • Loix, Nicolas Micromega Dynamics
  • Béchet, Eric ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur
    ORBi View his publications on ORBi
  • Bruls, Olivier ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques
    ORBi View his publications on ORBi
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  • Total number of downloads 7

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