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Now showing items 31-40 of 103
Computational fluid dynamics study for stability analysis of an unmanned aircraft mass simulator with rocket-assisted take-off
(2022-05)
This paper presents the stability analysis of a high speed unmanned aerial system mass simulator fitted with a rocket-assisted take-off (RATO) system. Flight stability characteristics from rocket ignition to rocket burnout ...
Design and evaluation of a small-scale portable hybrid rocket engine test stand
(2023-05)
This paper presents the design and evaluation of a small, portable hybrid rockettest stand that can accommodate up to a 3-in diameter engine casing. The primary goal
of this study is to determine the most effective way to ...
Mechanical characterization of heterogeneous hyperelastic membrane using inverse methods
(2021-12)
Many soft biological tissues are heterogeneous, having different properties at different locations. Characterizing these tissues is very important for virtually testing potential medical technologies or protocols. Some ...
Study on electrical degradation, processing and interfacial strength of carbon fiber epoxy composites with polymers and fillers
(2022-12)
The electric current induced damages in carbon fiber composites necessitates an improvement in their electric and thermal properties. The study investigates the effect of graphene as a filler material in carbon fiber epoxy ...
Sparse data-driven modeling framework for non-linear fluid flows
(2017-12)
Although fluid flows have been successfully modeled using the Navier-stokes equations, there exists only a limited class of flows for which exact analytical or numerical solutions are feasible at this time. For many practical ...
In-situ impregnation of polymer matrix with copper powder during additive manufacturing
(2020-07)
The fillers are used to increase the functional properties of polymer matrix composites (PMCs). Additive manufacturing can be potentially used to tailor the PMCs' properties through customization of the spatial architecture ...
Scaling effects of 5- to 13-kw turboelectric unmanned aircraft power systems
(2022-05)
This thesis details ground tests of three different turboelectric systems for unmanned aircraft applications based on existing 5-kW, 7-kW and 13-kW turbine engines. The motivation for this study is the continuing emergence ...
Experimental investigation into microstructures of aircraft grade balsa shear webs
(2023-05)
Unmanned aerial vehicles (UAVs) typically rely on balsa wood as the primary material for their aircraft structure. While previous research at Oklahoma State University had established basic material properties of aircraft ...
Design, simulation, and construction of a hot-gas bypass chiller for a commercial scale psychrometric coil testing facility
(2020-12)
In recent years, there has been a large effort from industry and researchers to improve the efficiency of HVAC&R systems. At Oklahoma State University (OSU), the Building & Environmental Systems Research Group (BETSRG) has ...
Entropy analysis of kinetic and kinematic gait parameters as a potential tool to predict osteoarthritis onset
(2019-05)
Osteoarthritis (OA) is a debilitating joint degenerative disease that is expected to drastically increase in prevalence by 2050. Therefore, it is necessary to find innovative ways to predict OA onset with the hopes of ...