Skin-based camber morphing utilizing shape memory alloy composite actuators in a wind tunnel environment

Leal, Pedro B.; Stroud, Hannah; Sheahan, Emery; Cabral, Marcela

doi:10.2514/6.2018-0799

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…All results hitherto indicate that SMA components enable tailored structural properties in cyclic applications. Previous studies have aspired to develop various potential engineered systems mimicking biological counterparts and specifically have implemented SMA components in biomimetic jellyfish [ 34 , 35 ], birds [ 26 , 36 ], earthworms [ 37 ], human-like anatomical systems [ 38 ], and others. However, previous studies did not explore the multifunctional potential of SMA components as inspired by natural musculoskeletal systems.…”

Section: Resultsmentioning

confidence: 99%

Phase transformation-driven artificial muscle mimics the multifunctionality of avian wing muscle

Leal

Cabral-Seanez

Baliga

et al. 2021

J. R. Soc. Interface.

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Skeletal muscle provides a compact solution for performing multiple tasks under diverse operational conditions, a capability lacking in many current engineered systems. Here, we evaluate if shape memory alloy (SMA) components can serve as artificial muscles with tunable mechanical performance. We experimentally impose cyclic stimuli, electric and mechanical, to an SMA wire and demonstrate that this material can mimic the response of the avian humerotriceps, a skeletal muscle that acts in the dynamic control of wing shapes. We next numerically evaluate the feasibility of using SMA springs as artificial leg muscles for a bipedal walking robot. Altering the phase offset between mechanical and electrical stimuli was sufficient for both synthetic and natural muscle to shift between actuation, braking and spring-like behaviour.

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Section: Resultsmentioning

confidence: 99%

Phase transformation-driven artificial muscle mimics the multifunctionality of avian wing muscle

Leal

Cabral-Seanez

Baliga

et al. 2021

J. R. Soc. Interface.

Self Cite

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“…The damping coefficient, f.i., arrives at the 25% of its initial value after a few hundreds of cycles. However, the already mentioned compactness and high-energy density encourage the adoption of these materials for adaptive applications, ranging from morphing wings themselves, [61][62][63] to deployable antennas 64 and stowable systems 65 and landing gears. 67 Table 1.…”

Section: Stiffness Versus Flexibility: Skinmentioning

confidence: 99%

Morphing wings review: aims, challenges, and current open issues of a technology

Ameduri

Concilio

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The scope of this work is to provide a critical review on the expectations about the morphing wing technology against the current open issues and showstoppers. In synergy to other emerging and promising technologies, morphing is asked for bridging the evident gap between the current growth trend of the aerospace compartment and its impact onto the environment. The potential of morphing, in particular, its primary impact on the aerodynamic efficiency of the aircraft, primed the investigation of different technologies, achieving interesting results but often highlighting limitations and showstoppers against the airworthiness regulations. The authors focus their attention on some specific aspects that characterize the morphing wing attachments and that may represent weakness points for the maturation of the technology: the load transmission of the movable parts to the supporting wing box, the way the flexibility–rigidity paradox is addressed by specific critical components (the skin), the scalability dependence of the morphing architectures, and the specific aeroelastic behavior of the nonconventional architectures.

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“…They also performed wind tunnel tests, which showed a promising performance of SMA-based wing morphing to replace a conventional wing with hinged flaps. Leal et al studied SMA wires embedded into an elastomer matrix as an actuator for morphing wing (Leal et al, 2018). The SMA actuators were further integrated into the skin of an airfoil so as to provide a continuous outer mold line without hindering morphing capability.…”

Section: Element Technology 3: Morphing Actuationsmentioning

confidence: 99%

Recent researches on morphing aircraft technologies in Japan and other countries

Tsushima

Tamayama

2019

Mechanical Engineering Reviews

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Morphing aircraft technology has recently gained attention of many research groups by its potential for aircraft performance improvement and economic flight. Although the performance of conventional control surfaces is usually compromised in off-design flight conditions, the morphing technique may achieve optimal flight performance in various operations by to adaptively altering the wing shape during flight. This paper aims to provide a comprehensive review on morphing aircraft/wing technology, including morphing mechanisms or structures, skins, and actuation techniques as element technologies. Moreover, experimental and numerical studies on morphing technologies applying those elemental technologies are also introduced. Recent research on these technologies are particularly focused on in this paper with comparisons between developments in Japan and other countries. Although a number of experimental and numerical studies have been conducted by various research groups, there are still various challenges to overcome in individual elemental technologies for a whole morphing aircraft or wing systems. This review helps for researchers working in the field related to morphing aircraft technology to sort out current developments for morphing aircraft.

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Skin-based camber morphing utilizing shape memory alloy composite actuators in a wind tunnel environment

Cited by 8 publications

References 10 publications

Phase transformation-driven artificial muscle mimics the multifunctionality of avian wing muscle

Phase transformation-driven artificial muscle mimics the multifunctionality of avian wing muscle

Morphing wings review: aims, challenges, and current open issues of a technology

Recent researches on morphing aircraft technologies in Japan and other countries

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