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Showing 1 to 15 of 15 for “"Wing Box"”.
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Optimization of Supersonic Aircraft Wing-Box using Curvilinear SpaRibs
… termed SpaRibs, to design supersonic aircraft wing-box in comparison to the use of classic design concepts that employ straight spars and ribs. The intent is to achieve a more efficient load-bearing mechanism and to passively control aeorelastic behavior of the structure under the flight loads. …
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Design of an instrumented workpart for robotic aircraft wing-box assembly
… of an underactuated robotic arm used in aircraft wing assembly and production was created to improve the wing-box assembly process. In order to display the robots capabilities and areas of improvement, a suitable testing device would be most helpful. This project attempts to achieve an appropriate …
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Aeroelasticity of wings coupling Navier-Stokes aerodynamics with wing-box finite elements
… interactions between flow about an aircraft wing and the wing structure can result in aeroelastic phenomena which significantly impact aircraft performance. Time-accurate methods for solving the unsteady Navier-Stokes equations have matured to the point where reliable results can be obtained …
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Vibration Analysis of a Composite Wing Box with Arbitrarily Shaped Spars and Ribs
… the free vibration analysis of composite wing boxes with curvilinear spars and ribs is performed. Modern manufacturing technologies, such as Electron Beam Freeform Fabrication and Friction Stir Welding, have allowed the manufacturing of arbitrarily shaped stiffeners. Curvilinear stiffeners …
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Design Optimization of a Composite Wing Box for High-Altitude Long-Endurance Aircraft
… optimization process is developed to define the wing box structure for High-Altitude Long-Endurance Aircraft (HALE). The goal of this study is to determine the best tradeoff between mass and rigidity of a HALE aircraft wing structure. A preliminary composite laminate structural design procedure …
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Evaluation of control systems for automated aircraft wing manufacturing
… different control system approaches for aircraft wing box assembly. First, general classes of control systems are discussed and several criteria are proposed for evaluating their performance in an aircraft manufacturing environment. The current wing box assembly process is then examined in order …
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Optimization of composite structures by genetic algorithms
… designs, and the designer may benefit by knowing many of those designs. Genetic algorithms are well suited for laminate design because they can handle the combinatorial nature of the problem and they permit the designer to obtain many near-optimal designs. However, their computational cost is …
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Contribution to load alleviation in aircraft pre-design and its influence on structural mass and fatigue
… design stages is a promising concept to reduce wing bending moments, structural mass and extend the fatigue life. The reference aircraft considered are two mid-range configurations: one with a backward and another one with a forward swept wing, respectively. In the loads analysis, quasi-steady …
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A CFD/CSD Interaction Methodology for Aircraft Wings
… NASTRAN. In addition, the Aeroelastic Research Wing (ARW-2) is used for demonstration of the aeroelastic coupling procedure by using ENSAERO (NASA Ames Research Center CFD code) and a finite element wing-box code (developed as a part of this research). The results obtained from the present study …
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Optimal Design and Analysis of Bio-inspired, Curvilinearly Stiffened Composite Flexible Wings
Large-aspect-ratio wings and composite structures both have been considered for the next-generation civil transport aircraft to achieve improved aerodynamic efficiency and to save aircraft structural weight. The use of the large-aspect-ratio and the light-weight composite wing can lead to an …
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Design of multifunctional paired robots engaged across a thin plate for aircraft manufacturing and maintenance
… aircraft industry lacks an automated system for wing box manufacturing and maintenance. Currently workers assemble and inspect thousands of fasteners in the wing structure by hand. This manufacturing process consumes valuable time and resources. Mobile robots capable of navigating on the interior …
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Efficient single-level solution of hierarchical problems in structural optimization
… as global variables for panels in a hierarchical wing design formulation. The proposed decoupling technique was implemented to minimize the volume of a portal frame and a wing box. Computational savings of up to 50 percent have been obtained for medium sized problems. The savings increase as the …
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A multi-agent approach for design consistency checking
… Design application, namely the design of an A340 wing box. The ontology of knowledge for agent-based Intelligent Distributed Mismatch Control System is introduced, as well as the distributed collaborative environment for consortium based projects.
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Buckling, Flutter, and Postbuckling Optimization of Composite Structures
… local design problems. For example, the wing structure design problem is decomposed into several local panel design problem. The use of composite necessitates the inclusion of ply angles as design variables. These design variables are discrete in nature because of manufacturing …
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Structural Optimization and Design of a Strut-Braced Wing Aircraft
… Optimization (MDO) by implementing truss-braced wing concepts in combination with other advanced technologies and novel design innovations. A considerable reduction in drag can be obtained by using a high aspect ratio wing with thin airfoil sections and tip-mounted engines. However, such wing …