All Outputs (21)

The effect of a nonlinear energy sink on the gust response of a wing (2024)
Journal Article

In this paper, the potential effectiveness of a nonlinear energy sink (NES) to absorb the energy from a wing that is vibrating as a result of flying in a gusty environment is investigated. The structural dynamics of the wing is simulated using a rigi... Read More about The effect of a nonlinear energy sink on the gust response of a wing.

A review of control strategies used for morphing aircraft applications (2024)
Journal Article

This paper reviews the various control algorithms and strategies used for fixed-wing morphing aircraft applications. It is evident from the literature that the development of control algorithms for morphing aircraft technologies focused on three main... Read More about A review of control strategies used for morphing aircraft applications.

Dynamic behaviors of composite leaf springs with viscoelastic cores (2023)
Journal Article

A leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. Due to their high strength to weight ratio, high stiffness, and high impact energy absorption, fiber-reinforced composite leaf springs gain considerable in... Read More about Dynamic behaviors of composite leaf springs with viscoelastic cores.

On the Aeroelasticity of a Cantilever Wing Equipped with the Spanwise Morphing Trailing Edge Concept (2023)
Journal Article

This paper studies the aeroelastic behavior of a rectangular, cantilever wing equipped with the spanwise morphing trailing edge (SMTE) concept. The SMTE consists of multiple trailing edge flaps that allow controlling the spanwise camber distribution... Read More about On the Aeroelasticity of a Cantilever Wing Equipped with the Spanwise Morphing Trailing Edge Concept.

Engine Placement Effects on the Flutter of a Medium-Range Box-Wing Aircraft (2023)
Journal Article

This study investigated the effects of powered engines on the stability boundaries of a box-wing configuration. The governing equations were obtained using Hamilton's principle. The equivalent effects of engine's mass and thrust were simulated using... Read More about Engine Placement Effects on the Flutter of a Medium-Range Box-Wing Aircraft.

Tailored twist morphing achieved using graded bend–twist metamaterials (2022)
Journal Article

This work develops a morphing concept that utilises a metamaterial as the passive morphing device for helicopter blades. The metamaterials are created with bend–twist coupling, which enable the blade twist under prescribed bending loads. Finite eleme... Read More about Tailored twist morphing achieved using graded bend–twist metamaterials.

Free vibration analysis of curved lattice sandwich beams (2022)
Journal Article

In this paper, the effects of initial curvature and lattice core shape on the bending vibration of sandwich beams are investigated. The three-dimensional (3D) sandwich beam is simulated by combining a two-dimensional (2D) cross-sectional analysis wit... Read More about Free vibration analysis of curved lattice sandwich beams.

Resonant passive energy balancing for a morphing helicopter blade (2022)
Journal Article

The idea of morphing a helicopter blade by using compliant structures promises augmented capabilities in terms of manoeuvrability and fuel efficiency. To achieve morphing, compliant structures work by elastically deforming to achieve the desired resp... Read More about Resonant passive energy balancing for a morphing helicopter blade.

Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch (2022)
Journal Article

There is an emerging trend in the morphing aircraft research where two or more morphing degrees of freedom are used on a wing which leads to the concept of polymorphing. The skin of the morphing wing must be flexible in the morphing direction but sti... Read More about Elastomer-based skins for morphing aircraft applications: Effect of biaxial strain rates and prestretch.

A Polymorphing Wing Capable of Span Extension and Variable Pitch (2022)
Journal Article

This paper presents the development of a novel polymorphing wing capable of Active Span morphing And Passive Pitching (ASAPP) for small UAVs. The span of an ASAPP wing can be actively extended by up to 25% to enhance aerodynamic efficiency, whilst it... Read More about A Polymorphing Wing Capable of Span Extension and Variable Pitch.

Nonlinear aeroelastic stability analysis of a two-stage axially moving telescopic wing by using fully intrinsic equations (2022)
Journal Article

During the process of span extension for an aircraft wing equipped with a telescopic morphing mechanism, the wing aspect ratio increases, and hence, the geometrical nonlinearities might become more significant. In this regard, this paper aims to inve... Read More about Nonlinear aeroelastic stability analysis of a two-stage axially moving telescopic wing by using fully intrinsic equations.

Parametric study on the dynamic aeroelastic analysis of a two-stage axially deploying telescopic wing (2022)
Journal Article

In this paper, the flutter instability of a conventional two-stage axially moving telescopic UAV wing is investigated. To this aim, and to be as close as possible to the reality, the effects of temporal variation of mass and length, due to the moveme... Read More about Parametric study on the dynamic aeroelastic analysis of a two-stage axially deploying telescopic wing.

Experimental validation of inertial twist concept for rotor blade application (2022)
Journal Article

The present study performs a set of static tests to demonstrate a novel passive morphing concept. The concept introduces a bend–twist coupled composite spar to rotor blades, allowing for twist morphing to be achieved by imposing a lagwise bending mom... Read More about Experimental validation of inertial twist concept for rotor blade application.

The effect of folding wingtips on the worst-case gust loads of a simplified aircraft model (2022)
Journal Article

In recent years, the development of lighter and more efficient transport aircraft has led to an increased focus on gust load alleviation. A recent strategy is based on the use of folding wingtip devices that increase the aspect ratio and therefore im... Read More about The effect of folding wingtips on the worst-case gust loads of a simplified aircraft model.

Blade thickness effects on viscous flutter in a radial turbocharger turbine (2022)
Journal Article

Transient blade loading limits the lifetime of turbocharger turbine blades. This study investigates the flutter instability of a radial turbocharger turbine blade under pulsating inlet conditions. The viscous Navier-Stokes equations with the SST-kω t... Read More about Blade thickness effects on viscous flutter in a radial turbocharger turbine.

The effect of elastic couplings and material uncertainties on the flutter of composite high aspect ratio wings (2021)
Journal Article

In this paper, the stochastic aeroelastic stability analysis of a composite high aspect ratio wing with various elastic couplings is investigated. The wing consists of a rectangular spar-box made from composite materials. Due to its high aspect ratio... Read More about The effect of elastic couplings and material uncertainties on the flutter of composite high aspect ratio wings.

A Parametric Study on the Aeroelasticity of Flared Hinge Folding Wingtips (2021)
Journal Article

This paper presents a parametric study on the aeroelasticity of cantilever wings equipped with Flared Hinge Folding Wingtips (FHFWTs). The finite element method is utilized to develop a computational, low-fidelity aeroelastic model. The wing structur... Read More about A Parametric Study on the Aeroelasticity of Flared Hinge Folding Wingtips.

Experimental study of lag-twist coupling concept for rotor blade application (2021)
Journal Article

A novel passive twist morphing concept is examined for helicopter blades. The concept is demonstrated using a thin-walled rectangular composite beam created with symmetric layup to obtain bend-twist property. The twist of a rotor blade is proposed to... Read More about Experimental study of lag-twist coupling concept for rotor blade application.

Vibration analysis of rotating porous functionally graded material beams using exact formulation (2021)
Journal Article

In this article, the exact free vibration of porous functionally graded rotating blades is investigated. The nonlinear 3D dynamics of the blade is simulated using the geometrically exact fully intrinsic beam equations, and the corresponding cross-sec... Read More about Vibration analysis of rotating porous functionally graded material beams using exact formulation.

Aeroelastic Stability Analysis of Electric Aircraft Wings with Distributed Electric Propulsors (2021)
Journal Article

In this paper, the effect of distributed electric propulsion on the aeroelastic stability of an electric aircraft wing was investigated. All the electric propulsors, which are of different properties, are attached to the wing of the aircraft in diffe... Read More about Aeroelastic Stability Analysis of Electric Aircraft Wings with Distributed Electric Propulsors.