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 20 of 32 for “"Aerodynamic analysis"”.
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Aerodynamic analysis and optimisation of a servo-controlled aileron
… investigated. This dissertation involves the aerodynamic analysis component of the collaboration project.
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Three-dimensional Integral Boundary Layer Method for Viscous Aerodynamic Analysis
Viscous aerodynamic analysis is crucial for aircraft design in terms of understanding key performance metrics such as drag. However, despite advances in computational fluid dynamics (CFD) in the past few decades, a physics-based three-dimensional (3D) viscous analysis suitable for aircraft …
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Design and Aerodynamic Analysis of Continuous Mold-line link flap
… discussed the effects of mold-line shape on its aerodynamic characteristics. Therefore, the objective of this research is to investigate the effect of shape and geometry on the aerodynamics of CML wings. First, the shape of the continuous mold-line is parametrized using a hyperbolic tangent …
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Aerodynamic analysis of groove based vortex trap configuration on the retreating helicopter blade
… using Prouty‟s dataset. The code aids in the analysis of the aerodynamic characteristics of the helicopter main rotor blade. To validate the code, the angle of attack distribution along the main rotor blade in forward flight condition is compared to published data of Prouty‟s. Another approach …
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Verification and Validation of Open-Source Simulation Tools for Supersonic Aircraft Aerodynamic Analysis
A verification and validation analysis of two widely-used open-source compressible-flow solvers, rhoCentralFoam and SU2, is performed for several flow problems relevant to the supersonic aerodynamics of small-scale, autonomous aircraft concepts. Vehicle concepts used as research platforms to test …
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Aerodynamic Analysis of Variable Geometry Raked Wingtips for Mid-Range Transonic Transport Aircraft
… (VGRWT/NCE) was studied to determine the aerodynamic performance benefits over an untreated wingtip. The Boeing SUGAR design employing a truss-braced wing was selected as the baseline. Vortex lattice method (VLM) and computational fluid dynamics (CFD) software was implemented to analyze …
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The development of dedicated CFD solver for aerodynamic analysis on internal and external flow
There are various engineering applications which required one has to solve an internal or an external flow problem. The design of flying vehicles such as aircraft, helicopter, missiles are examples which the ability to solve an external flow problem will determine the success in designing such …
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A Comparative Study of Two Solution Methods for Blade Momentum Equations Used in the Aerodynamic Analysis and Design of Wind Turbines
… are widely used for analyzing the wind turbine aerodynamics and for turbine blade design. Compared to the classical approach to the solution of BEM equations which is relatively complex and can sometime lead to non-convergent solution, recently Andrew Ning has described a simpler solution method …
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Design and aerodynamic analysis of an airfoil with a bioinspired leading edge device for stall mitigation at low Reynolds number operation
Robust and predictable aerodynamic performance of unmanned aerial vehicles at the limits of their design envelope is critical for safety and mission adaptability. Deployable aerodynamic surfaces, such as flaps or slats, from the wing leading or trailing edges are often used to extend the …
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Evaluation and Flight Assessment of a Scale Glider
… and stability characteristics. The flight test analysis, plus a computational fluid dynamics analysis, and an industry-like component build-up aerodynamic analysis were done to provide comparable estimates for the aircraft glide slope. A stability and control derivative analysis was also …
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Wing Optimization Technique Based on Vortex Lattice Theory
<p>An integrated aerodynamic optimization technique based on vortex lattice theory is being proposed. The technique in this work will aim at optimizing the geometric parameters of a general wing with NACA 65-210 airfoil sections under a low speed aerodynamic regime. This will be completed by …
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Conceptual Design and Optimization of a Tilt-Arm Hybrid Unmanned Aerial Vehicle
… conceptual design comprises mass, inertia, and aerodynamic analysis and mission-performance optimization. Preliminary dynamics-controls and structural analysis was performed (by other researchers) in a parallel effort to complement this design framework. Here, Vortex Lattice Method is used to …
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Geometrically Nonlinear Aeroelastic Scaling
… development of custom tools for structural analysis and sensitivities, aerodynamic analysis, and nonlinear aeroelastic trim.
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Aerodynamics and Impact Simulation of an Air-Dropped Ice Penetrator
… enough to avoid damaging internal components. Aerodynamic analysis is used to select a penetrator geometry, and to suggest a drop altitude of at least 5000 ft (1524 m). Detailed simulations of the impact reveal shock loads up to 566 G from a drop velocity of 42.5 m/s. Finally, the effects of …
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An unsteady, accelerated, high order panel method with vortex particle wakes
Potential flow solvers for three dimensional aerodynamic analysis are commonly used in industrial applications. The limitation on the number of discretization elements and the user expertise and effort required to specify the wake location are two significant drawbacks preventing the even more …
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Numerical study of linearized unsteady stagnation flow
… long been recognized as an important problem in aerodynamic analysis. Boundary layer disturbances located near the stagnation line can have a significant effect on the overall properties of an airfoil. One example of current interest is the analysis of unsteady multi-phase stagnation flows for …
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Coupled dynamics and economic analysis of floating wind turbine systems
… a coupled structural, hydrodynamic, and aerodynamic analysis of floating wind turbine systems in the frequency domain was developed and is presented. This analysis tool includes the effects of the gyroscopic loads of the wind turbine rotor on the tower and floater, the aerodynamic damping …
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The effects of temperature distortion on aerodynamics and low engine order forced response in axial turbines
… inlet temperature conditions to simplify the aerodynamic analysis. However, hot streaks may have significant impact on the turbine aerodynamics with the redistribution of the hot fluid affecting the development of secondary flows with consequent effects on enhanced local heat transfer and …
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Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing
… inertia properties and using software tools for aerodynamic analysis to get preliminary values for the static and dynamic stability derivatives. The next step was to design flight experiments for the purpose of system identification. The system identification focused on obtaining the longitudinal …
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Integrated Multidisciplinary Design Optimization Using Discrete Sensitivity Analysis for Geometrically Complex Aeroelastic Configurations
… three-dimensional unstructured grid approach to aerodynamic shape sensitivity analysis and design optimization has been developed. The advantage of unstructured grids, when compared with a structured-grid approach, is their inherent ability to discretize irregularly shaped domains with greater …
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