Computational Analysis of 3D Lattice Structures for Skin in Real-Scale Camber Morphing Aircraft

Alsaidi, Bashir; Joe, Woong Yeol; Akbar, Muhammad

doi:10.3390/aerospace6070079

Cited by 11 publications

(6 citation statements)

References 41 publications

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“…The homogenization method for a structural optimization procedure has been shown to dramatically increase stiffness [44], structural compliance [45], structural vibration [43], and energy absorption [46]. One of most common applications of using homogenization methods is design and analysis of morphing or adaptive structures for aircraft design [47][48][49][50]. In particular, lattice structure for flexible as well as stiff skin structure for morphing wing is one of major applications [51][52][53].…”

Section: Discussionmentioning

confidence: 99%

Homogenization Methods of Lattice Materials

Somnic

Joe

2022

Encyclopedia

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The existing methods for analyzing the behaviors of lattice materials require high computational power. The homogenization method is the alternative way to overcome this issue. Homogenization is an analysis to understand the behavior of an area of lattice material from a small portion for rapid analysis and precise approximation. This paper provides a summary of some representative methodologies in homogenization.

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Section: Discussionmentioning

confidence: 99%

Homogenization Methods of Lattice Materials

Somnic

Joe

2022

Encyclopedia

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“…The effect of lattice orientation on the mechanical properties of lattice-infilled morphing skin is reported. Analyzing five different types of lattices, the honeycomb lattice recorded better performance in the camber direction, while the square lattices presented better in-plane sheer performance [52].…”

Section: Introductionmentioning

confidence: 98%

Non-Conventional Wing Structure Design with Lattice Infilled through Design for Additive Manufacturing

Khan,

Acanfora,

Riccio

2024

Materials

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Lightweight structures with a high stiffness-to-weight ratio always play a significant role in weight reduction in the aerospace sector. The exploration of non-conventional structures for aerospace applications has been a point of interest over the past few decades. The adaptation of lattice structure and additive manufacturing in the design can lead to improvement in mechanical properties and significant weight reduction. The practicality of the non-conventional wing structure with lattices infilled as a replacement for the conventional spar–ribs wing is determined through finite element analysis. The optimal lattice-infilled wing structures are obtained via an automated iterative method using the commercial implicit modeling tool nTop and an ANSYS workbench. Among five different types of optimized lattice-infilled structures, the Kelvin lattice structure is considered the best choice for current applications, with comparatively minimal wing-tip deflection, weight, and stress. Furthermore, the stress distribution dependency on the lattice-unit cell type and arrangement is also established. Conclusively, the lattice-infilled structures have shown an alternative innovative design approach for lightweight wing structures.

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“…In the sense of the technology readiness level (TRL) of morphing aircraft, various levels of analysis and validation have been performed that range from analytical and numerical works to large-scale wind tunnel and flight tests [ 43 , 71 , 84 ]. Emphasizing manufacturability and feasibility according to implementation aspects, skin structure design and analysis of morphing wings is probably one of the most popular studied subjects [ 85 , 86 , 87 , 88 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Range and Endurance Evaluation of a Camber Morphing Wing Aircraft

Joe

Majid

2023

Biomimetics

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Flight range, endurance, maneuverability, and agility are the key elements that determine an aircraft’s performance. Both conventional and morphing wing aircraft have been well studied and estimated in all aspects of performance. When considering the performance of morphing aircraft, most works address aspects of the aerodynamical performance such as L and D as well as flight envelopes for flight dynamics and control perspectives. However, the actual benefits of adopting morphing technologies in practical aspects such as aircraft operation, mission planning, and sustainability have not been addressed so far. Thus, this paper addresses the practical aspect of the benefits when adopting a camber morphing wing aircraft. Identical geometrical and computational conditions were applied to an already-existing aircraft: the RQ-7a Shadow. The wing structure was switched between a fixed wing and a camber morphing wing to generate conventional and morphing wing geometries. The fixed-wing cases had varying flap deflection angles, and the camber morphing wing cases had varying camber rates from 4% to 8%. Once the CL values of the fixed and morphing wing cases were matched up to two significant figures, the CD and CL/CD were analyzed for these matching cases to calculate the flight endurance, range, and improvement. When NACA 6410 is adopted, a 17% improvement in flight range and endurance average was expected. In the case of NACA 8410, an average 60% improvement was expected.

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Computational Analysis of 3D Lattice Structures for Skin in Real-Scale Camber Morphing Aircraft

Cited by 11 publications

References 41 publications

Homogenization Methods of Lattice Materials

Homogenization Methods of Lattice Materials

Non-Conventional Wing Structure Design with Lattice Infilled through Design for Additive Manufacturing

Enhanced Range and Endurance Evaluation of a Camber Morphing Wing Aircraft

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