Design, numerical simulation and experimental testing of a controlled electrical actuation system in a real aircraft morphing wing model

Botez, Ruxandra Mihaela; Kammegne, Michel Joël Tchatchueng; Grigorie, Teodor Lucian

doi:10.1017/s0001924000011131

Cited by 20 publications

(3 citation statements)

References 36 publications

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“…Studies for optimal placement of the actuators with a focus on activities aimed at practical implementation were presented in a review [22]. The design, simulation, and control of the miniature linear actuator used in the actuation mechanism of the morphing wing was presented in [23]. The same authors studied in addition two control methods for obtaining optimized airfoil configurations for fixed wind flow conditions.…”

Section: Main Objectivesmentioning

confidence: 99%

Numerical and experimental validation of a full scale servo-actuated morphing aileron model

Arena

Amoroso

Pecora

et al. 2018

Smart Mater. Struct.

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Aircraft industry is by now deeply involved in technological breakthroughs bringing innovative frameworks, in which the morphing systems constitute the most promising scenario. These systems are taking a remarkable role among the unconventional solutions for the improvement of performance in the operating conditions. The application of morphing devices involves a combination among structural and aerodynamic analyses, actuation requirements, weight assessment and flight control performance. The research project CRIAQ-MDO505, Canadian–European cooperation project on smart technologies, has investigated morphing structures potential through the design and the manufacturing of a variable camber aileron tailored to CS-25 category aircraft applications. This paper is especially focused on the most considerable results able to validate the conceptual design: functionality, ground vibration and wind tunnel tests outcomes have been discussed. The ailerons typically constitute crucial elements for the aerodynamic forces equilibrium of the wing. Therefore, compared to the traditional architectures, the need of studying the dynamic performance and the following aeroelastic impact is, in the specific case of servo-actuated variable-shaped systems, higher. Relying upon the experimental evidence within the present research, the issue appeared concerns the critical importance of considering the dynamic modelling of the actuators in the design phase of a smart device. The higher number of actuators and mechanisms involved makes de facto the morphing structure much more complex. In this context, the action of the actuators has been modelled within the numerical model of the aileron: the comparison between the modal characteristics of numerical predictions and testing activities has shown a high level of correlation. Moreover, the compliance of the device with the design morphing shapes has been proved by wind tunnel test. The outcomes are expected to be key insights for future designers to better comprehend the dynamic response of a morphing aileron, primary knowledge for flutter and failure analyses.

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Section: Main Objectivesmentioning

confidence: 99%

Numerical and experimental validation of a full scale servo-actuated morphing aileron model

Arena

Amoroso

Pecora

et al. 2018

Smart Mater. Struct.

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“…However, the aerodynamic aspect is only one side of the story and it is not enough to evaluate the benefits of morphing. The integration of the actuation system plays an important role in the development of a wing with morphing capabilities [16], as well as the structure, which can be optimized to lead to weight savings [17].…”

Section: Introductionmentioning

confidence: 99%

Study on the Actuation Aspects for a Morphing Aileron Using an Energy–Based Design Approach

Gaspari

2022

Actuators

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Evaluating the impact of morphing devices in terms of actuation energy is a promising approach to quantify, from the earliest stages of wing design, the convenience of active camber morphing compared to the use of conventional control surfaces. A morphing wing device consists of an adaptive structure coupled with an actuation system. The starting point for the design of the adaptive structure is a three-dimensional parametric-geometry-representation technique working on the definition of the external morphing shape. The morphing shape is defined to be feasible from the structural point of view and able to meet the aerodynamic design requirements. The new method presented here enables the computation of the actuation energy as a combination of strain energy and external aerodynamic work. The former is the energy required to deform the skin and can be computed in an analytical way, based on the same quantities used by the parameterization technique. The latter is used to compute the energy needed to counteract the external aerodynamic loads during the deformation. This method is applied to the design optimization of a morphing aileron which is installed on a 24 m span wing, starts at 65% of both the chord and the semi-span and extends for one third of the span. A parametric study shows the superiority of the morphing aileron, compared with an equivalent hinged aileron, in terms of energy saving, weight penalty reduction and ease of on-board installation. The morphing aileron is more compact and requires a lower actuation energy combined with a lower deflection, while providing the same roll moment.

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“…However, although such a mechanism showed high accuracy and compactness, the potential failure ratio increased because of the larger number of requested motors to withstand external aerodynamic loads. Design, simulation, and control of a miniature linear actuator for morphing wing actuation was proposed in [21]. In that case, the actuator consisted of a miniature brushless direct current (BLDC) motor, a gearing system, and a trapezoidal screw, and was verified as of to managing the high force field appearing under the morphing skin during wind tunnel tests.…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Performance of a Morphing Trailing Edge Concept with High-Damping Elastomeric Skin

et al. 2019

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Nature has many striking examples of adaptive structures: the emulation of birds’ flight is the true challenge of a morphing wing. The integration of increasingly innovative technologies, such as reliable kinematic mechanisms, embedded servo-actuation and smart materials systems, enables us to realize new structural systems fully compatible with the more and more stringent airworthiness requirements. In this paper, the authors describe the characterization of an adaptive structure, representative of a wing trailing edge, consisting of a finger-like rib mechanism with a highly deformable skin, which comprises both soft and stiff parts. The morphing skin is able to follow the trailing edge movement under repeated cycles, while being stiff enough to preserve its shape under aerodynamic loads and adequately pliable to minimize the actuation power required for morphing. In order to properly characterize the system, a mock-up was manufactured whose structural properties, in particular the ability to carry out loads, were also guaranteed by the elastic skin. A numerical sensitivity analysis with respect to the mechanical properties of the multi-segment skin was performed to investigate their influence on the modal response of the whole system. Experimental dynamic tests were then carried out and the obtained results were critically analysed to prove the adequacy of the adopted design approaches as well as to quantify the dissipative (high-damping) effects induced by the rubber foam on the dynamic response of the morphing architecture.

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Design, numerical simulation and experimental testing of a controlled electrical actuation system in a real aircraft morphing wing model

Cited by 20 publications

References 36 publications

Numerical and experimental validation of a full scale servo-actuated morphing aileron model

Numerical and experimental validation of a full scale servo-actuated morphing aileron model

Study on the Actuation Aspects for a Morphing Aileron Using an Energy–Based Design Approach

Static and Dynamic Performance of a Morphing Trailing Edge Concept with High-Damping Elastomeric Skin

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