### Recent Submissions

• #### Operational usage and flight loads analysis of C-130 aircraft used in aerial firefighting missions ﻿

(Wichita State University, 2021-12)
Recorded flight data from two EC-130Q and two L-382G aircraft have been analyzed to perform operational airframe usage assessment and flight loads analysis. These aircraft were flown in support of USFS aerial firefighting ...
• #### Effect of flaperons on a biplane configuration ﻿

(Wichita State University, 1994-05)
The use of full span flaperons on low speed biplane configurations i~ a unique synergistic concept that has yet to be evaluated. The well-executed biplane configuration is useful for performing low speed aerobatics, ...
• #### Computational fluid dynamics and fluid structure interaction analysis on the use of inflatable wing structures ﻿

(Wichita State University, 2021-07)
The research conducted in this thesis was done to ascertain the potential of using drop-stitch panels for inflatable wing designs. This was done primarily by using 2D CFD analysis on airfoil sections approximating the shape ...
• #### Progressive damage analysis of pinned joints of composite plates ﻿

(Wichita State University, 2021-07)
A composite payload attach fitting (PAF) is being designed and fabricated at NASA MSFC for the Block 1B heavy-lift Space Launch System (SLS).Functioning as the primary structural interface, the PAF is connected to the ...
• #### Artificial neural network based prediction of solar array degradation during electric orbit-raising ﻿

(Wichita State University, 2021-05)
In recent years there have been some major developments in the space industry with the introduction of fully electrically propelled satellites. All-electric propulsion enables smaller and lighter satellite design that ...
• #### Preliminary mission design for proposed NuSol probe ﻿

(Wichita State University, 2021-05)
A solar neutrino detector has never own in space. NuSol is a proposed mission to y a solar neutrino detector close to the Sun in order to conduct unique science experiments that cannot be realized by detectors on ...
• #### Intralaminar fracture toughness of 3D printed unidirectional composites ﻿

(Wichita State University, 2020-12)
The purpose of this research was to identify the fracture toughness $(G_{Ic})$ of intralaminar specimens of 3D printed composites. Two types of polylactide acid (PLA) were tested, PLA Neat (with no reinforcement) and PLA ...
• #### Acoustic absorption properties of granular and 3D printed aerogels ﻿

(Wichita State University, 2020-12)
Aerogel is a diverse class of nano-porous ultralight solid material. This research examines the acoustic properties of aerogel-based structures and evaluates their suitability for aircraft noise-reduction applications. ...
• #### Neuroadaptive observer design for spacecraft attitude control and formation attitude synchronization ﻿

(Wichita State University, 2020-12)
Spacecraft attitude-tracking control problems require uncertainties and disturbances- rejecting controllers to perform well in practical scenarios. The objective of this research is to design an adaptive controller that ...
• #### Acoustic evaluation of the bell 699 rotor on the tiltrotor test rig in the national full-scale aerodynamics complex 40- by 80- foot wind tunnel ﻿

(Wichita State University, 2020-12)
Aircraft noise is a growing problem in the air travel industry [1]. Urban air mobility (UAM) is a new movement to use rotorcraft to fly in and between large cities to alleviate ground traffic congestion [2]. Aircraft noise ...
• #### Characterization of the in-plane homogenized mechanical properties of a hexagonal honeycomb core ﻿

(Wichita State University, 2020-12)
The in-plane homogenized elasto-plastic behavior of a hexagonal aluminum honeycomb core has been investigated using experiments and finite element analysis of an idealized representative volume element. In-plane uniaxial ...
• #### Evaluation of composite debris modeling method for high loading rate events ﻿

(Wichita State University, 2020-12)
The objective of this study was to assess the effectiveness of debris modeling for simply connected composite laminates at high loading rates using an adaptive mesh method in Finite Element Analysis (FEA). Double shear ...
• #### Aircraft loss-of-control: Real-time adaptive prediction of safe control margins and pilot advisory displays ﻿

(Wichita State University, 2020-07)
Predictive systems with the ability to warn pilots of impending entry into loss-of-control have the potential to improve safety in flight. Along these lines, the research documented in this dissertation has sought to develop ...
• #### Impact of launch injection errors on orbit-raising of all-electric satellites ﻿

(Wichita State University, 2020-07)
To mitigate the cost of chemical propulsion satellites, satellite operators are increasing their utilization of all-electric propulsion satellites for orbit-raising missions to geosynchronous equatorial orbit. However, ...
• #### Parallel implementation for a magnetohydrodynamics solver with equilibrium chemistry ﻿

(Wichita State University, 2020-05)
The main objective of this research was to develop a parallel implementation of a hypersonic MHD solver. The original serial code utilizes a fourth-order modified Runge-Kutta scheme with TVD to solve the full MHD equations. ...
• #### An algorithm for directionally tailored toolpath generation for fused deposition modeling ﻿

(Wichita State University, 2020-05)
Fused Deposition Modeling (FDM) is an Additive Manufacturing (AM) process in which a thermoplastic material is extruded through a nozzle along a two-dimensional path specified by machine code to create a layer. Multiple ...
• #### Inverse acoustic property characterization using impedance tube measurements ﻿

(Wichita State University, 2020-05)
The ever-increasing demand for improved fuel-efficiency and weight reduction has resulted in increased focus on porous materials. Cellular porous materials offer designers a route towards improving structural properties ...
• #### Development of homogenized elasto-plastic material behavior of hexagonal cell honeycomb core using experiments and finite element analysis ﻿

(Wichita State University, 2020-05)
This research attempted to describe the geometry of HexWeb CR-III-1/8-5052-8.1N commercial aluminum honeycomb core and give some statistical information about its deviation from the average. The finite element model of ...
• #### Reinforcement learning framework for spacecraft low-thrust orbit raising ﻿

(Wichita State University, 2020-05)
The use of electric propulsion (EP) in satellites for transfer to geosynchronous equatorial orbit (GEO) is increasingly gaining importance among the space industry all around the world, and is proven a key for new space ...
• #### Numerical solution of Maxwell’s equations on transformed coordinates for non-rectangular electromagnetic applications ﻿

(Wichita State University, 2020-05)
The utilization of a fourth-order Modified Runge-Kutta (MRK) scheme on a transformed coordinate system for simulating electromagnetic applications that involve non-rectangular domains are presented. The model equations ...