Aero-structural optimization and analysis of a camber-morphing flying wing: Structural and wind tunnel testing

Keidel, Dominic; Molinari, Giulio; Ermanni, Paolo

doi:10.1177/1045389x19828501

Cited by 31 publications

(17 citation statements)

References 28 publications

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“…They observed that at higher speeds the sources of aeroelastic instability was a typical ternary mechanism characterized by the combination of the aileron harmonic mode and aileron tab mode and sustained by the bending mode. Keidel et al [130] introduced a novel structure-actuation camber morphing concept for a flying wing. The concept used an internal structure actuated by electromechanical actuators.…”

Section: Aeroelastic Stabilitymentioning

confidence: 99%

Recent developments in the aeroelasticity of morphing aircraft

Ajaj

Parancheerivilakkathil

Amoozgar

et al. 2021

Progress in Aerospace Sciences

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Section: Aeroelastic Stabilitymentioning

confidence: 99%

Recent developments in the aeroelasticity of morphing aircraft

Ajaj

Parancheerivilakkathil

Amoozgar

et al. 2021

Progress in Aerospace Sciences

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“…A prototype of the CHIRP smart airfoil was also flight tested on a UAV demonstrating sufficient controllability and maneuverability of the plane being produced exclusively through morphing. This design was also extended to a span-wise varying camber morphing wing [40] with electromechanical actuators.…”

Section: Material-based Camber Morphing Mechanisms a Material-based Camber Morphing Mechanism Features Materials Anisotropy And Tools Likmentioning

confidence: 99%

Status and Challenges on Design and Implementation of Camber Morphing Mechanisms

Majid

Joe

2021

International Journal of Aerospace Engineering

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This paper presents state-of-the-art technologies of camber morphing mechanisms from the perspectives of design and implementation. Wing morphing technologies are aimed at making the aircraft more energy or aerodynamically efficient during flight by actively adjusting the wing shape, but their mechanism designs and implementation aspects are often overlooked from practical sense in many technical articles. Thus, it is of our interest that we thoroughly investigate morphing mechanisms and their nature of design principles and methodologies from the implementation and test flight aspects, navigate the trends, and evaluate progress for researchers’ methodology selection that possibly turns to design and build stages. This paper categorizes the camber morphing mechanisms from a wide collection of literature on morphing wings and their mechanisms, and the defined classifications are based on mechanism’s design features and synthesis methodology, i.e., by the tools and methods used to solve the design problem. The categories are (1) structure-based, (2) material-based, and (3) hybrid. Most of the structure-based camber morphing mechanisms have distinctive structural features; however, the material-based camber morphing mechanisms make use of material properties and tools to enhance the elastic nature of its structures. Lastly, the hybrid morphing mechanisms are a combination of both the aforementioned categories. In summary, this review provides researchers in the field of morphing mechanisms and wings with choices of materials, actuators, internal and external structure design for wings, and overarching process and design methodologies for implementation with futuristic and practical aspects of flight performance and applications. Moreover, through this critical review of morphing mechanism, selective design criteria for appropriate morphing mechanisms are discussed.

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“…Concretely, we use a quasi-steady, weakly coupled aeroelastic tool iteratively calculating the deflection on the morphing flap and subsequently updating the aerodynamic loads until convergence per each flow condition is reached. This approach has been extensively used and experimentally validated to study the aeroelastic response of morphing structures for aircraft wings 39,41,51,52 and wind turbine blades alike. 10,53 This code is based on three different Python scripts linking the finite element analysis of the structure with the aerodynamic response obtained from XFOIL, as schematically illustrated in Figure 9 Figure 10A,B.…”

Section: Aeroelastic Modelling and Analysis: Passive Load Alleviationmentioning

confidence: 99%

Passive load alleviation on wind turbine blades from aeroelastically driven selectively compliant morphing

Cavens¹,

Chopra

Arrieta

2020

Wind Energy

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Load alleviation control is highly desirable to reduce penalties associated with the added structural mass required to withstand rare load scenarios. This is particularly true for wind turbine designs incorporating long-span blades. Implementation of compliance-based morphing structures to modify the lift distribution passively has the potential to mitigate the impact of rare, but integrally threatening, loads on wind turbine blades while limiting the addition of actuation and sensing systems. We present a novel passive load alleviation concept based on a morphing flap exhibiting selective compliance from an embedded bistable element. A multifidelity, aeroelastic tool is used to study the shape adaptability of a morphing flap indicating that passive changes from high lift generation to load alleviation configurations can be achieved by exploiting the energy of the flow. This mechanism offers a method to reduce catastrophic peak loads potentially, thus offering the possibility to lower the overall structural weight of wind turbine blades.

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Aero-structural optimization and analysis of a camber-morphing flying wing: Structural and wind tunnel testing

Cited by 31 publications

References 28 publications

Recent developments in the aeroelasticity of morphing aircraft

Recent developments in the aeroelasticity of morphing aircraft

Status and Challenges on Design and Implementation of Camber Morphing Mechanisms

Passive load alleviation on wind turbine blades from aeroelastically driven selectively compliant morphing

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