Wing Morphing to Improve Control Performance of an Aircraft - An Overview and a Case Study

Hattalli, Vinod Laxman; Srivatsa, Shivashankar R.

doi:10.1016/j.matpr.2018.06.553

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…An interesting overview and a case study of morphing wing for the improvement of the control performance of airplanes have been illustrated by Hattalli and Srivatsa [31]. The case study focused on the camber change of the horizontal tail of an aircraft employing SMAs.…”

Section: Sma Applications On Wingsmentioning

confidence: 99%

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Shape Memory Alloys for Aerospace, Recent Developments, and New Applications: A Short Review

2020

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Shape memory alloys (SMAs) show a particular behavior that is the ability to recuperate the original shape while heating above specific critical temperatures (shape memory effect) or to withstand high deformations recoverable while unloading (pseudoelasticity). In many cases the SMAs play the actuator's role. Starting from the origin of the shape memory effect, the mechanical properties of these alloys are illustrated. This paper presents a review of SMAs applications in the aerospace field with particular emphasis on morphing wings (experimental and modeling), tailoring of the orientation and inlet geometry of many propulsion system, variable geometry chevron for thrust and noise optimization, and more in general reduction of power consumption. Space applications are described too: to isolate the micro-vibrations, for low-shock release devices and self-deployable solar sails. Novel configurations and devices are highlighted too.Materials 2020, 13, 1856 2 of 16 and novelty of the proposals. Ni-Ti alloys are the most employed ones, but the subject is not limited to them. Origin of the Shape Memory EffectFor the comprehension of the basic principles regarding the shape memory effect and pseudoelasticity, many contributions are useful. The crystallography of martensite, the transformation temperatures, and rate of martensite formation are discussed in details by Nishiyama [6].Materials 2020, 13, x FOR PEER REVIEW 2 of 16 relevance, number of articles, and novelty of the proposals. Ni-Ti alloys are the most employed ones, but the subject is not limited to them. Origin of the Shape Memory EffectFor the comprehension of the basic principles regarding the shape memory effect and pseudoelasticity, many contributions are useful. The crystallography of martensite, the transformation temperatures, and rate of martensite formation are discussed in details by Nishiyama [6]. Figure 1. Binary phase diagram of Ti-Ni alloy [7]. Figure 1

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Section: Sma Applications On Wingsmentioning

confidence: 99%

“…Camber change of activated and deactivated airfoil profile[31].Figure 7Reprinted from Materials Today Proceedings, Vol. 5, Hattalli, V.L.…”

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confidence: 99%

Shape Memory Alloys for Aerospace, Recent Developments, and New Applications: A Short Review

2020

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The role of laser in manufacturing of shape memory alloy (sma)

Karpagaraj

Ramesh²,

Kumar³

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Shape Memory Alloys are widely used smart materials in recent times for various applications from aerospace to biomedical field. Shape Memory Alloy (SMA) is made of mixture of different metal powders (Ni-Ti with 50 – 50 Wt% (approximate) can give Nitinol) and/or by using filler metals. However, fusing the selected powder mixture and making as SMA is a challenging task. Researchers used various techniques for making SMA which can be classifed into two major categories likely casting method and powder metallurgy method. Laser power to make SMA is widely used by most of the researchers. These processes are further classified by conventional and non-conventional methods. Under this method various classification like Direct Laser Melting, Selective Laser Melting, Laser Sintering and Laser Cladding are available. In this article, the above-mentioned production methods using laser as major source are studied carefully. The advantages and limitations are also discussed on justifying the suitability of processing SMA by lasers. Along with their limitations the influence of each parameter is focused. Finally, a conclusion is made based on this detailed study.

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Aerodynamic Analysis and Simulation for a Z-Shaped Folding Wing UAV

Wang,

Guo

2024

Aerospace

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The potential of folding wing unmanned aerial vehicles (UAVs) in enhancing the adaptability of complex missions is substantial. Analyzing the aerodynamic characteristics of these UAVs is vital for optimizing the design of their folding wing configuration and airfoil shape. In this study, a model of a Z-shaped folding wing UAV was established with the objective of enhancing UAV maneuverability. An integrated vortex lattice method (VLM) was employed to analyze the aerodynamic characteristics of the Z-shaped folding wing and numerical simulations were utilized to validate the obtained results, which prove the effectiveness of the integrated VLM in studying aerodynamic characteristics at a high angle of attack of the Z-shaped folding wing UAV. This is a new way to reduce computation time while maintaining accuracy to calculate such complex folding structures in high fidelity. Furthermore, the Z-shaped folding wing configuration demonstrates enhanced maneuverability at high angles of attack, and a Simulink flight simulation model based on the aerodynamic coefficients of the Z-shaped folding wing verifies this property. This analysis can properly predict the post-stall characteristics for the Z-shaped folding wing UAV to ensure the safety of the vehicle during flight.

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Wing Morphing to Improve Control Performance of an Aircraft - An Overview and a Case Study

Cited by 4 publications

References 10 publications

Shape Memory Alloys for Aerospace, Recent Developments, and New Applications: A Short Review

Shape Memory Alloys for Aerospace, Recent Developments, and New Applications: A Short Review

The role of laser in manufacturing of shape memory alloy (sma)

Aerodynamic Analysis and Simulation for a Z-Shaped Folding Wing UAV

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