Aerostructural model for morphing laminar wing optimization in a wind tunnel

  1. Get@NRC: Aerostructural model for morphing laminar wing optimization in a wind tunnel (Opens in a new window)
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Journal titleJournal of Aircraft
Pages6676; # of pages: 11
SubjectActive structures; Angles of attack; Drag forces; Finite element software; Flight conditions; Flow condition; Infrared thermography; Local search; Morphing; Numerical models; Numerical results; Optimization algorithms; Tunnel measurements; Wind-tunnel testing; Wing chord; Wing surface; Aerodynamics; Computer software; Drag; Laminar flow; Mach number; Optimization; Wind tunnels
AbstractAn aerostructural numerical model of a two-dimensional morphing laminar wing prototype is built and validated for different flight conditions: Mach numbers ranging from 0.2 to 0.3 and angles of attack ranging from-1 to 2°. The active structure of the wing is modeled using the ANSYS commercial finite element software. The aerostructural interaction is achieved by coupling the XFoil free-license aerodynamic solver to ANSYS. This model is used to minimize the drag force under constant-lift conditions during wind-tunnel testing using a two-step optimization algorithm (global and local search). The wake pressure wind-tunnel measurements show that extrados morphing results in an average 18.5% drag reduction for eight flow cases covering the flow condition range of interest. Simultaneously, the infrared thermography measurements record an average laminar flow extension of 25% of the wing chord over the upper wing surface. The experimental and numerical results are in good agreement, thus validating the use of an aerostructural model to efficiently manage the shape of a morphing laminar wing. Copyright © 2010 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
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AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21271386
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Record identifiercfc1752d-f96a-411c-a0e4-3df040b58bc9
Record created2014-03-24
Record modified2016-05-09
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