Conceptual design and comparative study of strut-braced wing and twin-fuselage aircraft configurations with ultra-high aspect ratio wings

Ma, Yiyuan; Karpuk, Stanislav; Elham, Ali

doi:10.1016/j.ast.2022.107395

Cited by 22 publications

(16 citation statements)

References 28 publications

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“…The research on the methodology presented in this section is divided into two aspects: Conceptual Design and Optimization and Coupled Adjoint Aerostructural Optimization. The conceptual design and optimization are performed by using the in-house tool PyInit [41] and the open-source tool SUAVE [42],…”

Section: Methodsmentioning

confidence: 99%

“…The aircraft conceptual design and analysis framework consisting of PyInit and modified SUAVE, developed by the authors [41], is employed in this paper. This framework includes the design and analysis modules for SBW aircraft.…”

Section: A Conceptual Design and Optimization Methodologymentioning

confidence: 99%

“…The relatively high error in the aerodynamic data is mainly due to the difference in the drag bookkeeping methods and the supercritical airfoils employed in the SUGAR project and this framework, as described in Ref. [41]. Therefore, a relative difference of around 8% in some aerodynamic data is considered acceptable at the conceptual design stage.…”

Section: B Validation Of the Conceptual Design Modulementioning

confidence: 99%

“…An MR-SBW aircraft with a similar mission to the A320 was initially designed by the authors, as presented in Ref. [41]. This MR-SBW aircraft was designed to operate at Mach 0.78 with 150 passengers (2 class).…”

Section: A Sbw Aircraft Conceptual Design and Optimizationmentioning

confidence: 99%

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Geometrically Nonlinear Coupled Adjoint Aerostructural Optimization of Natural-Laminar-Flow Strut-Braced Wing

Abouhamzeh

Elham

2023

Journal of Aircraft

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Novel aircraft concepts employing ultrahigh-aspect-ratio wings, such as the strut-braced wing (SBW) configuration, are promising ways to achieve the next-generation sustainable and fuel-efficient aviation goals. However, as the wing aspect ratio increases, the wing increasingly exhibits more flexibility, higher deformation, and geometrically nonlinear behavior that cannot be accurately simulated by conventional sizing methods and typical linear structural analysis models. This paper establishes a framework for SBW aircraft conceptual design, conceptual optimization, and aerostructural optimization. The presented aerostructural optimization method has medium-fidelity and physics-based features. A geometrically nonlinear structural analysis solver and a quasi-three-dimensional aerodynamic solver are coupled for the aerostructural optimization of composite natural-laminar-flow SBW aircraft. A medium-range (MR)-SBW aircraft is initially designed and optimized in the conceptual design stage. A gradient-based aerostructural optimization is performed using the proposed tool for minimizing the fuel mass of the initially sized and optimized MR-SBW aircraft. The optimization results in a more than 10% reduction in fuel mass, a more than 8% reduction in aircraft maximum takeoff mass, and a more than 30% reduction in wing and strut structural weight by optimizing the wing box structure, the wing planform, and the airfoil shape while satisfying the constraints on structural failure, wing loading, and aileron effectiveness.

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Section: Methodsmentioning

confidence: 99%

Section: A Conceptual Design and Optimization Methodologymentioning

confidence: 99%

Section: B Validation Of the Conceptual Design Modulementioning

confidence: 99%

Section: A Sbw Aircraft Conceptual Design and Optimizationmentioning

confidence: 99%

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Geometrically Nonlinear Coupled Adjoint Aerostructural Optimization of Natural-Laminar-Flow Strut-Braced Wing

Abouhamzeh

Elham

2023

Journal of Aircraft

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“…The design drivers for future aircrafts are non-conventional propulsion (hybrid, electric, hydrogen) to reduce emissions and non-conventional configurations to increase global efficiency [8]. Global efficiency can be improved by maximizing the aerodynamic efficiency or minimizing the structural weight.…”

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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Nonlinear Model Order Reduction of a Strut-Braced Ultra-High Aspect Ratio Wing for Gust Load Analysis

Clifford,

Da Ronch,

Elham

2024

Lecture Notes in Mechanical Engineering

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Conceptual design and comparative study of strut-braced wing and twin-fuselage aircraft configurations with ultra-high aspect ratio wings

Cited by 22 publications

References 28 publications

Geometrically Nonlinear Coupled Adjoint Aerostructural Optimization of Natural-Laminar-Flow Strut-Braced Wing

Geometrically Nonlinear Coupled Adjoint Aerostructural Optimization of Natural-Laminar-Flow Strut-Braced Wing

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

Nonlinear Model Order Reduction of a Strut-Braced Ultra-High Aspect Ratio Wing for Gust Load Analysis

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