Conception d’une ailette adaptative pour l’optimisation des performances aérodynamiques de l’avion CRJ-700

Abstract

Today's aeronautics is governed by the ecological transition and the development of greener planes. Morphing wing technology joins this new vision and has the potential to increase aircraft performance and reduce CO2 emissions. The morphing winglet concept belongs to this technology and represents a promising solution due to its contribution to improve the aerodynamic performance in flight. This thesis presents the design of a morphing winglet for the Bombardier CRJ-700 regional aircraft. A requirements analysis was developed to identify the needs and expectations of such a concept. This analysis notably highlighted the orientations of the morphing winglet generating the best lift-to-drag ratio in cruising condition. These results, carried out from simulations taken from a Level D certified simulator from CAE, demonstrated the advantages of equipping the CRJ-700 with such technology. A dimensioning phase was performed to design the morphing winglet. This phase was oriented both around the structural dimensioning of the latter, but also the dimensioning of its mechanism allowing its orientation as well as the dimensioning of its skin. Through this phase, the maximum stresses applied to the dimensioned structure were established. From then on, the 3D design of the morphing winglet on Catia V5 software was undertaken. A mechanism involving an electric linear actuator has been designed to allow the orientation of the morphing winglet. The development of a finite element optimization phase of the morphing winglet structure made it possible to validate that it perfectly withstands the maximum load conditions that could be applied to it. In addition, the geometry of the internal structure has been optimized to provide this research with a final concept of morphing winglet. The control of the orientation of the morphing winglet was finally performed.

Date	18 Aug 2021
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Ruxandra Botez (Supervisor) & Jeremy Laliberté (Co-supervisor)