2015
DOI: 10.2514/1.c033116
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Aerodynamic Shape Optimization of an Adaptive Morphing Trailing-Edge Wing

Abstract: Adaptive morphing trailing edge wings have the potential to reduce the fuel burn of transport aircraft. In this paper, we quantify the aerodynamic performance benefits of a morphing trailing using aerodynamic design optimization. The aerodynamic model solves the Reynolds-averaged Navier-Stokes equations with a Spalart-Allmaras turbulence model. A gradient-based optimization algorithm is used in conjunction with an adjoint method that computes the required derivatives. The baseline geometry is optimized using a… Show more

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Cited by 129 publications
(62 citation statements)
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“…2 A study with Navier-Stokes based aerodynamic optimization of a variable camber trailing edge flap on a 777 size aircraft showed drag reductions from 1% at on-design conditions to 5% at off-design conditions. 3 Reports of structural benefits from ACTE are less numerous. A paper on a concept for mechanizing camber variation indicated the ability to reduce wing root bending moments by up to 12%.…”
Section: Introductionmentioning
confidence: 97%
“…2 A study with Navier-Stokes based aerodynamic optimization of a variable camber trailing edge flap on a 777 size aircraft showed drag reductions from 1% at on-design conditions to 5% at off-design conditions. 3 Reports of structural benefits from ACTE are less numerous. A paper on a concept for mechanizing camber variation indicated the ability to reduce wing root bending moments by up to 12%.…”
Section: Introductionmentioning
confidence: 97%
“…All of the parameters required by the model were readily available except for the lift control derivative, C Lη , noted in Equation (6). As previously detailed by Pankonien et al 2014b 12 , analyzing the change in aerodynamic forces between different wings and configurations beyond basic trends can be difficult due to many different factors including: the interplay of spanwise actuation with the tip vortex, the inboard flap vortex, and positioning errors for the individual actuators.…”
Section: Control Derivatives For Equivalent Flapmentioning
confidence: 99%
“…Still, recent studies have shown relatively little impact on performance of a morphing wing near the on-design condition, i.e. cruise, compared to conventional actuators 6 . This is largely because conventional wings are optimized before construction for high efficiency at cruise conditions.…”
Section: Introduction 11 Motivationmentioning
confidence: 99%
“…With an efficient adjoint implementation, the cost of computing the gradient of a single function of interest with respect to hundreds or thousands of shape design variables is roughly of the same order of the cost of one flow solution [6]. Those methods have been successfully applied in recent aerodynamic shape optimizations [7,8,9,10,11,12].…”
Section: Introductionmentioning
confidence: 99%