Passive energy balancing design for a linear actuated morphing wingtip structure

Zhang, Jiaying; Wang, Chen; Shaw, Alexander D.; Amoozgar, Mohammadreza; Friswell, Michael I.

doi:10.1016/j.ast.2020.106279

Cited by 13 publications

(4 citation statements)

References 27 publications

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“…wing will of course also affect the mechanism and distribution of motion that will be produced. The type of material used in the design of the morphing wing on this light aircraft prototype, considering the changing chamber positions and reducing the energy required to drive the morphing requires flexible materials and structures [32]. Motor servo MG996R 11.…”

Section: Methodsmentioning

confidence: 99%

Design and implementation of electrical system morphing wing flight control on prototype light aircraft

Léonard

Prasetiyo

Putra

2023

IJPEDS

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This journal discusses the implementation and testing of the electrical morphing wing system on light aircraft prototypes, namely technology on the wing to increase the value of aerodynamic efficiency on the wing surface with experimental methods based on knowledge obtained from various literature sources. Using a configuration of eight servo actuators arranged in parallel for the aileron and flap functions as well as setting and control with a six-channel Flysky-FSi6 remote to control the movement of the master and slave aileron actuators as well as the flap function on the morphing wing. The design includes the layout of the actuator, setting commands on the remote and wiring system electrical components. Other aspects such as rib design, mechanism and material selection affect the overall distribution of motion produced by the servo actuator. Through the design of the electrical system morphing wing design on the prototype aircraft, it is proven to be able to support the needs of the morphing wing motion mechanism with the concept of an arrangement of eight actuators in parallel on the rib morphing wing. It is hoped that the concept of the morphing wing can be implemented and further developed so that it can be used on full-scale aircraft.

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Section: Methodsmentioning

confidence: 99%

Design and implementation of electrical system morphing wing flight control on prototype light aircraft

Léonard

Prasetiyo

Putra

2023

IJPEDS

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“…Many wingtip devices have been developed to mitigate gust loads, operating either actively or passively to reduce the lifting force generated on the outboard section of the wing [12][13][14]. Compliant based approaches have also been proposed for wingtip designs, such as chiral structures or corrugated panels which allows wingtip morphing throughout the flight envelope to maximise the overall efficiency [15][16][17]. Similar amounts of load alleviation can be realised through aeroelastic tailoring concepts, which are often achieved by optimising the stacking sequence of the composite laminate and elastic coupling to attain the minimum strain energy at the wing root during gust loading [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Sizing of High Aspect Ratio Wings with Folding Wing Tips

Healy

Rezgui

et al. 2022

AIAA SCITECH 2022 Forum

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“…Wang et al [22] applied a new passive energy balance mechanism using a spiral pulley to reduce the required actuation force in a morphing structure. Zhang et al [23] introduced a negative stiffness mechanism for a passive energy balancing concept applied to a morphing wingtip with a linear actuator. Their target was to optimize the passive energy balancing design and minimize the energy consumption and the required actuation force .…”

Section: Introductionmentioning

confidence: 99%

Resonant Passive Energy Balancing of Morphing Helicopter Blades with Bend-Twist Coupling

Taghipour

Zhang

Shaw

et al. 2021

Preprint

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With increasing demand for rotor blades in applications such as wind turbines, helicopters, and unmanned aircrafts , improving the performance of such structures using morphing blades has received considerable attention. Resonant passive energy balancing is a relatively new concept introduced to minimize the required actuation energy. This study investigates resonant passive energy balancing ( RPEB ) in morphing helicopter blades with lag-twist coupling. The structure of a rotating blade with a moving mass at the tip is considered under aerodynamic loading. The aeroelastic behaviour of this structure includes potentially significant nonlinearities arising from the nonlinear elements of the structure and nonlinear aerodynamic loading. These nonlinearities make the design process complicated, and hence it is important to fully understand this system’s nonlinear dynamic behaviour. A reduced order model of the structure with three degrees of freedom ( 3DOF ), including the pitch angle and lagging of the blade, along with the motion of the moving mass, is used to analyse the dynamics of the structure. First, a single-degree-of-freedom ( SDOF ) model for the pitch angle dynamics of the blade is studied to examine the effect of important parameters on the pitch response. In this SDOF model, the harmonic excitation due to moving mass and the aerodynamic forces are considered. The results demonstrate that the coefficient of lag-twist coupling and the direction of aerodynamic moment on the blade are two parameters that play important roles in controlling the pitch angle, particularly the phase. Then, neglecting the aerodynamic forces, the 3DOF system is studied to investigate the sensitivity of the dynamics of the structure to changes in the parameters of the system. The results of the structural analysis can be used to tune the parameters of the blade in order to use the resonant energy of the structure and to reduce the required actuation force. A sensitivity analysis is then performed on the dynamics of the 3DOF model of the blade in the presence of aerodynamic forces to investigate the controllability of the amplitude and phase of the pitch angle using control parameters. The results show that the bend-twist coupling and the distance between the aerodynamic centre and the rotation centre (representing the direction and magnitude of aerodynamic moments) play significant roles in determining the pitch dynamics.

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Passive energy balancing design for a linear actuated morphing wingtip structure

Cited by 13 publications

References 27 publications

Design and implementation of electrical system morphing wing flight control on prototype light aircraft

Design and implementation of electrical system morphing wing flight control on prototype light aircraft

Sizing of High Aspect Ratio Wings with Folding Wing Tips

Resonant Passive Energy Balancing of Morphing Helicopter Blades with Bend-Twist Coupling

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