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Browsing Aeronautics and astronautics by Title
Now showing items 69-88 of 314
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Design and Construction of a Wind Tunnel Model with Active Variable Camber Continuous Trailing Edge Flap for Aeroelastic “In-Flight” Shape Optimization Tests
An aeroelastically scaled wing wind tunnel model was designed and fabricated for low-speed wind tunnel tests of real-time optimization-based continuous camber and twist shaping concepts for the SSCI-DIRECT project. The ... -
Design and Experimental Investigation of a Hydroxyl Ammonium Nitrate Based Workhorse Microthruster
Hydroxylammonium nitrate-based (HAN-based) monopropellant is being investigated as an alternative to hydrazine due to its lower inherit hazard of handling and higher energy density. It is hypothesized the light-off temperature ... -
Design of a Rail Gun System for Mitigating Disruptions in Fusion Reactors
Magnetic fusion devices, such as the tokamak, that carry a large amount of current to generate the plasma confining magnetic fields have the potential to lose magnetic stability control. This can lead to a major plasma ... -
Design of the DSSL Testbench Hardware Architecture for Rapid Development and Execution of Hardware-in-the-Loop Control
(2013-02-25)This thesis discusses the development of the MATLAB-based Distributed Space Systems Lab (DSSL) Hardware Architecture (or DHA), a software stack and design methodology to allow for rapid hardware and software development ... -
Design Optimization of Structures with Shape Memory Alloy Member Actuators
(2014-02-24)A capability was developed to build a perform mass-minimization of a truss with SMA actuation to determine optimal element diameters and actuator applied temperature changes. The Nonlinear Programming/Approximation Concepts ... -
Detailed Characterization of Flowfields and Uncertainty in a Speed-Bump Turbulent Separated Flow Validation Experiment
Experimental examinations of incompressible flow over a novel speed-bump geometry were conducted towards the development of a turbulence model validation dataset for separated flows. Efforts to characterize the boundary ... -
Detailed Characterization of Turbulent Separated Flow Dynamics and Boundary Layer Evolution Over a Speed-Bump Geometry
The separated flow over a speed-bump was studied using planar particle image velocimetry(PIV) and high frequency surface pressures to investigate the separation and reattachment dynamics. The source of low frequency ... -
Detection of near-wall vortices and their manipulation by use of dielectric barrier discharge plasma actuators
A sizable amount of the drag on a typical jet airplane is due to skin friction. Decreasing this skin friction drag by even just a small percentage could significantly increase the efficiency of the plane. The idea of ... -
Developing Advanced Atomic Force Microscopy Techniques for Probing Coupled Phenomena in Functional Materials
In the last decades, nanotechnology has built great expectations because of its unique capabilities in engineering materials with tailored properties. Exhibiting enhanced physical and chemical properties at length scale ... -
Development and Characterization of Pressure-Sensitive Microbeads for Simultaneous Barometry and Velocimetry for Fluid Dynamic Applications
(2014-04-30)The use of luminescent dyes to measure pressures and temperatures on surfaces using Pressure Sensitive Paint (PSP) and Temperature-Sensitive Paint (TSP) is a well-established methodology. New technology has allowed for ... -
Development and Testing of Temperature-sensitive Beads for Simultaneous Thermometry and Velocimetry
(2012-08-10)Temperature-sensitive beads (TSBs) have been developed with promising characteristics for application to complex flows, giving the capability for flow visualization via simultaneous full-field thermometry and velocimetry. ... -
Development and validation of computational tools for the characterization and analysis of non-linear plasma photonic crystals
Plasma photonic crystals have the potential to significantly expand the capabilities of current microwave filtering and switching technologies by providing high speed (microsecond) control of energy band-gap/pass characteristics ... -
Development of a 5N-moment Multi-Fluid Plasma Model for D-T Fusion in an Axisymmetric Z Pinch
The thermonuclear fusion process in a D-T Z pinch is investigated by developing the multi-component, deuterium-tritium-helium-electron, model including fusion reactions and interspecies collisions via the WARPXM simulation ... -
Development of a Collisionless Plasma Kinetic Solver and an Investigation of One-Dimensional Plasma Waves and Instabilities
Several classic problems in collisionless plasma kinetics are treated by solving the one-dimensional multi-species Vlasov-Poisson system with a BGK collision operator. Calculations are done using a second order discontinuous ... -
Development of a Gridded Energy Analyzer for Measurement of the Mochi Experiment Ion Energy Distribution
A new experiment at the University of Washington called Mochi is intended to simulate astrophysical jets in the laboratory and investigate their stability, with particular interest in conservation of canonical helicity. ... -
Development of a Helicon Plasma Receiver for Wireless Power Transfer
Typical research of long distance wireless power transfer systems is limited to electromagnetic waves, specifically microwave and laser systems. Plasma provides an appealing alternative due to its internal charge separation ... -
Development of a Reflective Polymer-Dispersed Liquid Crystal
Polymer-dispersed liquid crystals as a shear force measurement system offer many advantages over conventional single-point measurement systems. They are non-intrusive while offering ideal 2-dimensional mapping of shear ... -
Development of a Tridyne Microthruster for CubeSat Applications
A warm gas thruster using a catalyzed tridyne propellant (85% N2, 10% H2 and 5% O2 by volume) was developed at the University of Washington in collaboration with Aerojet Rocketdyne for the purposes of advancing micro-propulsion ... -
Development of a turbulent separated flow validation test case: Experimental and computational (RANS) studies
A new validation test case for CFD of turbulent separated flows is investigated through a combination of experiments and simulations. This work is part of an ongoing collaboration between the University of Washington and ... -
Development of a Vision-Based Particle Tracking Velocimetry Method and Post-Processing of Scattered Velocity Data
(2012-08-10)In this thesis, a new vision-based hybrid particle tracking velocimetry (VB-PTV) technique is described and methods of processing randomly scattered velocity data investigated. The VB-PTV technique uses a feature matching ...