AE Theses and Dissertations
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Laser ablation based on-orbit debris removal
(Wichita State University, 2019-07)Space debris are defunct man-made satellites orbiting in the low-earth orbit (LEO) and Geo-synchronous orbit (GEO) orbiting around earth with high velocities posing a serious threat for current and future missions. ... -
Elastic wave propagation in self-similar and non-self-similar hierarchical lattice structures
(Wichita State University, 2019-07)Plane wave propagation in infinite two dimensional self-similar and non-self-similar square periodic lattices have been investigated using Floquet-Bloch Theory. Finite element analysis was applied to calculate dispersion ... -
Numerical estimation of slipstream characterisitics for propellers operating at low Reynolds numbers
(Wichita State University, 2019-07)An accurate estimation of propeller slipstream characteristics is essential to evaluate the performance characteristics of airframe components placed within the propeller slipstream. The complicated vortical structures of ... -
Experimental validation of honeycomb core forming limits
(Wichita State University, 2019-05)The objective of this thesis is to understand the deformation and potential node bond failures of fiberglass/phenolic honeycomb core during forming. This data will be used to provide experimental validation of a hyper ... -
Semi-tailless aircraft concept with variable cant stabilizers applied to small UAVS
(Wichita State University, 2019-05)In recent years the use of small UAVs (<5lbs) has grown rapidly. While fundamentally the same as large aircraft, differences in requirements, payloads, and cost allow for a greater number of viable concepts. Many new ... -
Design, implementation and experimental testing of an inertial sensor system to quantify wing deflection
(Wichita State University, 2019-05)This research investigates a novel approach of using inertial micro-electromechanical sensors in combination with a Kalman state estimator to quantify wing deflection of a highly flexible morphing wing. Motivated by ... -
Optimal orbit-raising and attitude control of all-electric satellites
(Wichita State University, 2018-12)Electric propulsion is gaining popularity among satellite operators due to its fuel e ciency. However, electric propulsion has the limitation of producing a small magnitude of thrust, meaning that the transfer time to ... -
Cure dependent thermal conductivity of carbon fiber/epoxy composite - experiments and analysis
(Wichita State University, 2018-12)Knowledge of thermal conductivity of fiber reinforced composites is important to understand the thermal gradients and heat build-up during cure. Thermal conductivity of composite materials depends on temperature, direction ... -
Aircraft system identification using the pixhawk mini controller for academic use
(Wichita State University, 2018-12)This paper summarizes the use of a small, low cost, versatile, easy-to-program, and off-the-shelf autopilot system, called the Pixhawk Mini, to fly and validate a student-built RC aircraft in the aerospace engineering ... -
Sub 750-watt electric propulsion dynamometer
(Wichita State University, 2018-12)The recent surge in popularity of small electric UAVs under 2kg (4 lbs.) has exposed a need for reliable electric motor performance data. With these UAVs using propulsion systems below 750 W, the systems designed to test ... -
Elastic wave propagation through 3-dimensional cubic lattice structures
(Wichita State University, 2018-12)In this study, the elastic wave propagation in 3-dimensional periodic lattice structure was investigated. The investigation was performed on the three cubic lattice structures (Simple Cubic, Body Centered Cubic, and Face ... -
Evaluation of a progressive damage model for a single lap-shear joint of multi-directional laminates
(Wichita State University, 2018-07)This document presents results from a numerical study of the progressive damage capabilities of the MAT162 material model in Ls-DYNA explicit finite element code. Single-shear fastener lap joint of multi-directional laminates ... -
Loss of control prediction system for the longitudinal and lateral dynamics of an aircraft using Laplace methods
(Wichita State University, 2018-07)Loss-of-control events have contributed to many accidents worldwide to this date. A signi cant amount of research has been done to provide safer ight conditions and thus prevent such events from occurring. One such ... -
A numerical representative volume element on the mesoscale for parts manufactured through fused deposition modeling and reinforced with short fibers
(Wichita State University, 2018-05)The analysis and certification of parts manufactured through Fused Deposition Modeling and reinforced with short fibers are the main drawback of the emerging technology. The present work builds a framework for the discrete ... -
Development of a fastener element in a lap joint with plates
(Wichita State University, 2018-05)The application of joints or other forms of connections are often seen in large assembled structures. When it comes to model joints in FEA software, engineers have some difficult decisions to make. Modeling joints using ... -
Strength characterization of chopped-fiber composites using Iosipescu test method
(Wichita State University, 2017-12)In the aviation industry, composites are considered high-performance structural materials. Composite materials are mainly used in fuselages, wings, propellers, interior components, landing gears, doors, etc. Their main ... -
A three-dimensional numerical analysis of the effect of embedding cylindrical microwire sensors on the compressive strength of carbon-fiber reinforced composite laminates
(Wichita State University, 2017-12)The objective of this 3D finite element analysis study is to evaluate the effect on compressive strength of a laminated composite specimen, when cylindrical microwire tubes are embedded inside the structure. These microwire ... -
Characterization of tensile and compressive properties of single fiber filament of TOHO HTS 40 carbon fiber
(Wichita State University, 2017-12)In this work, the longitudinal tensile and compressive properties of TOHO HTS 40 carbon fiber filaments was characterized experimentally. The tensile strength and modulus were measured using a single filament tension tests ... -
A numerical study on the triaxiality distribution in a single shear lap fastener joint
(Wichita State University, 2017-12)Fastened joints are used extensively in the aerospace industry and play an important role in defining the crashworthiness of the structure [1, 2]. As larger finite element models (FEM) are developed, joints are typically ... -
Numerical simulation of the leaflet designs to improve hemodynamics of mechanical heart valves
(Wichita State University, 2017-07)Mechanical heart valves (MHVs) are widely implanted due to their reliability and long life span. However, patients who receive MHV implants are required and prescribed anticoagulant medication to reduce the high risk of ...
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