Preliminary design of an actuation system for a morphing winglet

Dimino, Ignazio; Amendola, Gianluca; Giampaolo, Barbara Di; Iannaccone, Giuseppe; Lerro, Angelo

doi:10.1109/icmae.2017.8038683

Cited by 16 publications

(14 citation statements)

References 2 publications

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“…solve different problems and apply external loading to drive their model. However, the 260 work presented here shows the possibility of morphing model structures in 3D and that the 261 result may give an alternative wing structure, compared to the traditional one consisting of 262 ribs, as proposed by Dimino et al[31].…”

mentioning

confidence: 84%

Topology Optimization of Large-Scale 3D Morphing Wingstructures

Jensen¹,

Wang²,

Dimino³

et al. 2021

Preprint

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This work proposes a systematic topology optimization approach to simultaneously design the morphing functionality and actuation in three-dimensional wing structures. The actuation is assumed to be a linear strain-based expansion in the actuation material and a three-phase material model is employed to represent structural and actuating materials, and void. To ensure both structural stiffness with respect to aerodynamic loading and morphing capabilities, the optimization problem is formulated to minimize structural compliance while morphing functionality is enforced by constraining a morphing error between actual and target wing shape. Moreover, a feature mapping approach is utilized to constrain and simplify actuator geometries. A trailing edge wing section is designed to validate the proposed optimization approach. Numerical results demonstrate that three-dimensional optimized wing sections utilize a more advanced structural layout to enhance structural performance while keeping morphing functionality than two-dimensional wing ribs. The work presents the first step towards systematic design of three-dimensional morphing wing sections.

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confidence: 84%

Topology Optimization of Large-Scale 3D Morphing Wingstructures

Jensen¹,

Wang²,

Dimino³

et al. 2021

Preprint

Self Cite

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“…In the adaptive winglet conceptual design, it is assumed that: Morphing is ensured by a dedicated mechanism composed by movable surfaces (namely, upper and lower tabs), whose deflection is driven by dedicated actuators [15][16][17]. By rotating respectively and independently upper and lower tabs, two possible configurations of the adaptive winglet can be achieved, as shown in Figure 2.…”

Section: Scope and Reference Geometriesmentioning

confidence: 99%

“…Ref. [15][16][17] presents the enhanced (estimated about 3%) aerodynamic performance assured by the physical integration of morphing winglets on a next-generation regional aircraft. The winglet conceptual design is based on the "finger-like" mechanism that the same authors conceived and validated on full-scale aileron devices [10,11] and morphing wing trailing edge [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Aeroelastic Assessments and Functional Hazard Analysis of a Regional Aircraft Equipped with Morphing Winglets

et al. 2019

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The application of morphing wing devices can bring several benefits in terms of aircraft performance, as the current literature shows. Within the scope of Clean Sky 2 AirGreen 2 European project, the authors provided a safety-driven design of an adaptive winglet, through the examination of potential hazards resulting from operational faults, such as actuation chain jamming or links structural fails. The main goal of this study was to verify whether the morphing winglet systems could comply with the standard civil flight safety regulations and airworthiness requirements (EASA CS25). Systems functions were firstly performed from a quality point of view at both aircraft and subsystem levels to detect potential design, crew and maintenance faults, as well as risks due to the external environment. The severity of the hazard effects was thus identified and then sorted in specific classes, representative of the maximum acceptable probability of occurrence for a single event, in association with safety design objectives. Fault trees were finally developed to assess the compliance of the system structures to the quantitative safety requirements deriving from the Fault and Hazard Analyses (FHAs). The same failure scenarios studied through FHAs have been simulated in flutter analyses performed to verify the aeroelastic effects due to the loss of the actuators or structural links at aircraft level. Obtained results were used to suggest a design solution to be implemented in the next loop of design of the morphing winglet.

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“…The majority of the mechanisms presented in the above studies were driven by an external force or displacement, meaning that in practice, additional space is required for an actuator (or actuators) in the morphing structure, as investigated in [15]. Actuating, as part of the mechanism, could prove a better overall volume optimum for a morphing wing, as seen in [14].…”

Section: Introductionmentioning

confidence: 99%

Topology Optimization of Large-Scale 3D Morphing Wing Structures

et al. 2021

Self Cite

View full text Add to dashboard Cite

This work proposes a systematic topology optimization approach for simultaneously designing the morphing functionality and actuation in three-dimensional wing structures. The actuation was modeled by a linear-strain-based expansion in the actuation material. A three-phase material model was employed to represent structural and actuating materials and voids. To ensure both structural stiffness with respect to aerodynamic loading and morphing capabilities, the optimization problem was formulated to minimize structural compliance, while the morphing functionality was enforced by constraining a morphing error between the actual and target wing shape. Moreover, a feature-mapping approach was utilized to constrain and simplify the actuator geometries. A trailing edge wing section was designed to validate the proposed optimization approach. Numerical results demonstrated that three-dimensional optimized wing sections utilize a more advanced structural layout to enhance structural performance while keeping the morphing functionality better than two-dimensional wing ribs. The work presents the first step towards the systematic design of three-dimensional morphing wing sections.

show abstract

Preliminary design of an actuation system for a morphing winglet

Cited by 16 publications

References 2 publications

Topology Optimization of Large-Scale 3D Morphing Wingstructures

Topology Optimization of Large-Scale 3D Morphing Wingstructures

Aeroelastic Assessments and Functional Hazard Analysis of a Regional Aircraft Equipped with Morphing Winglets

Topology Optimization of Large-Scale 3D Morphing Wing Structures

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