Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Aerospace Design"”.
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Effective Formulations of Optimization Under Uncertainty for Aerospace Design
… under uncertainty (OUU) commonly used in aerospace design—those based on treating statistical moments of the quantity of interest (QOI) as separate objectives—can result in stochastically dominated designs. A stochastically dominated design is undesirable, because it is less likely than …
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A structural design process for a next generation aerospace design environment
The current structural sizing process used to design military aircraft was developed when the emphasis was on the design of the most advanced products possible, with the customer bearing the associated risks of its development. However the marketplace has evolved into where the customer expects …
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Multistate analysis and design : case studies in aerospace design and long endurance systems
This research contributes to the field of aerospace engineering by proposing and demonstrating an integrated process for the early-stage, multistate design of aerospace systems. The process takes into early consideration the many partially degraded states that real-world systems experience …
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Global and Robust Optimization for Engineering Design
There is a need to adapt and improve conceptual design methods through better optimization, in order to address the challenge of designing future engineered systems. Aerospace design problems are tightly-coupled optimization problems, and require all-at-once solution methods for design consensus …
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Robust adaptive high-order RANS methods
… geometries proves critical in the advancement of aerospace design. However, quantitatively accurate results from modern Computational Fluid Dynamics (CFD) tools are often accompanied by intractably high computational expenses and are significantly hindered by the lack of automation. In particular, …
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Acceleration Techniques for Industrial Large Eddy Simulation with High-Order Methods on CPU-GPU Clusters
… key finding is that the use of CFD in the aerospace design process is severely limited by the inability to accurately and reliably predict turbulent flows with significant regions of separation. Scale-resolving simulations such as large eddy simulation (LES) are increasingly utilized with …
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Quantitative Mechanical Properties of Carbon-based Surfaces Examined through Analysis of Cantilever Dynamics in Atomic Force Microscopy
… they can be used in several industries such as aerospace, design and manufacturing, and microelectromechanical systems (MEMS), where the techniques can be utilized for the more efficient assessment of the functionality of nanomaterials in such applications. Furthermore, the results of this …
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Modeling and sensitivity analysis of aircraft geometry for multidisciplinary optimization problems
A new geometry management paradigm for aircraft design utilizes Computer Aided Design (CAD) systems as the source for consistent geometry models across design phases and analysis tools. Yet various challenges inhibit the widespread application of CAD models in aircraft conceptual design because …
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A multi-agent approach for design consistency checking
… of the globalization and future distribution of design and manufacturing facilities, the cooperation amongst partners is becoming more challenging due to the fact that the design process tends to be sequential and requires communication networks for planning design activities and/or a great deal …
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Multidisciplinary design of thermally radiating structures using a level set based topology optimization approach
… for efficient thermally radiating structures for aerospace applications is apparent in many system designs including satellites, launch vehicles and hypersonic aircraft. While multidisciplinary structural optimization methods have been employed to design these systems, few have incorporated …
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Exploring Engineering Applications of Visual Analytics in Virtual Reality
… are various branches of engineering, including aerospace design and in civil engineering. The range of potential applications is vast and growing as new stakeholders are adopting these immersive tools. However, the use of these technologies brings its own challenges. One such difficulty is the …
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An experimental rig to investigate crosswind effects on intake flow behaviour
Aerospace design engineers are being pushed to invent greener and more efficient technology. The next generation of turbofan engines aims to drastically reduce their carbon emissions by improving propulsive efficiency. To accomplish this low fan pressure ratio, large engine technology has been …
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Computational Modal Analysis of a Hydraulic Pump Support Structure for a Business Aircraft
… theory. It was found that the structural design changes were not significant enough to impactfully influence the modal response of the structure. The methodology presented in this work provides an outline for future modelling and analysis of this generic business aircraft design.
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Cultivating Creativity in Aerospace Systems Engineering to Manage Complexity
<p>In recent decades, complexity in aerospace programs has been increasing, leading to large budget and schedule overruns. Many of the risks of complex system development can be attributed to the inadequacy of linear methods when applied to nonlinear domains, i.e., oversimplification in a program …
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An Iteration on the Horizon Simulation Framework to Include .NET and Python Scripting
… and Simulation is a crucial element of the aerospace engineering design pro- cess because it allows designers to thoroughly test their solution before investing in the resources to create it. The Horizon Simulation Framework (HSF) v3.0 is an aerospace modeling and simulation tool that allows …
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The Impact of Simulation-Based Learning in Aircraft Design on Aerospace Student Preparedness for Engineering Practice: A Mixed Methods Approach
… for student preparation centering on engineering design called the Live Simulation Based Learning (LSBL) approach is proposed based upon the theories of situated learning, game-based learning, epistemic frames, and accidental competencies. This dissertation discusses the results of a study of the …