Aerospace Engineering Commons^™

Simulating Low Gravity Particle-Laden Flow, Ryan Lewis

Student Research Symposium

No abstract provided.

Density Fluctuations Measurements In Supersonic Flows, Allie Dingfield, Davide Vigano

Undergraduate Research Conference at Missouri S&T

Turbulence in compressible flows plays a major role in a variety of aerospace applications. However, due to fluctuating thermodynamic quantities, compressible turbulence is challenging to analyze. Of these quantities, density fluctuations are of high importance due to their role in describing turbulence. A method to obtain quantitative measurements of density fluctuations has been developed using the optical technique of shadowgraph imaging. Shadowgraph imaging has frequently been used to obtain qualitative information about density gradients in fluids. However, quantitative application of these methods is much less common. The quantitative shadowgraph method presented here relates the light intensity variations in an image …

Fea Analysis On S& T Student Designed Satellite, Joseph Nguyen

Undergraduate Research Conference at Missouri S&T

The Missouri Rolla and Missouri Rolla Second Satellite (MR & MRS) is a paired satellite developed by the Missouri S& T Satellite Reseach Team (M-SAT) designed to test new technologies in support of missions involving proximity operations. The M-SAT team won first place in the Nanosatellite Competition hosted by Air Force Research Laboratory in 2015 and obtained funding to proceed with design development. The MR & MRS satellite today will undergo extensive revisions to meet new design requirements and changing technological advancements. The alterations planned for MR & MRS will not only change the structure but directly affect the thermal …

New Testing Capabilities Of The Missouri University Of Science And Technology Supersonic Wind Tunnel, Joshua Gary, Davide Vigano

Undergraduate Research Conference at Missouri S&T

The development of non-intrusive, laser-based diagnostic techniques has significantly enhanced supersonic experimental aerodynamics, enabling the measurement of many parameters in complex flow fields. Among these techniques, Tomographic Particle Image Velocimetry, capable of measuring 3 components of velocity in 3-dimensional volumes, is now available at the Aerodynamics Research Laboratory of the Missouri University of Science and Technology. To integrate this new system into the university's supersonic wind tunnel, a redesigned nozzle, test section, and diffuser have been implemented. The upgraded modular test section features 4 large ports which can be configured with windows for optical diagnostics or lead plates for model …

Successful Rocket Launch In Argonia, Seungyou Cho

SACAD: Scholarly Activities

The object of launching the PK-56 (The name of the kit) rocket is how to take off and land safely using the parachute deployment. To inspect the engineering process, I tried to get an L1 certification from Tripoli Rocketry Association who is judging whether the rocket was flying stable. This consisted of building the structure, deployment system, engine system, anddesigning process. The most important thing was to read the instructions thoroughly, and to build a safe rocket.

Since launching high-power rockets needs a comprehensive understanding of those processes, I tested with small rocket with a motor that impulses 1.26 N …

High-Fidelity Turbulence Modelling Of Double-Diffusive Mixing In Buoyancy Driven Flows, Sanaz Izadifar

Student Research Symposium

Double-diffusive convection is the flow caused by buoyancy gradient in a fluid, where two different scalars cause density gradients, and each scalar has significantly different diffusion rates.

Wake Characteristics Of In-Phase And Out-Phase Array Of Oscillation Airfoils, Yi-Cheng Chen

Student Research Symposium

In order to solve the hydrodynamics of a school of fish using the open-source SEM solver Nek5000, an oscillating mesh is required to simulate fish oscillations and at the same time simplify the process of mesh partitioning and satisfy the limitation of nek5000 that the mesh must be quadrilateral.

Mechanical Property Variability In Lpbf Ss316l Due To Defects Formation And Process Interruption, Tasrif Ul Anwar

Student Research Symposium

This project aims to understand the correlation between the manufacturing process, defect formation, process interruptions, and the resulting properties of components made with laser powder bed fusion techniques.

Uncertainty Quantification In Neural Networks For Cfd, Cody Grogan

Student Research Symposium

Neural Networks have surged to popularity in many fields because of their ability to model complex functions. However, for most scientists, this comes at the cost of interpretability.

The aim of this research is to compile the different methods to uncertainty quantification in Neural Networks and apply them to a CFD problem.

High-Throughput: An Approach For Simultaneous Creep Testing Of Nuclear Structural Alloys, Raushan Singh

Student Research Symposium

Creep is a time-dependent deformation at constant load and elevated temperature.

It is widely used in an application that involves high temperature under load for e.g., Nuclear reactors.

Creep tests are notoriously slow, taking weeks/months to complete one experiment.

• This makes High-Throughput techniques more desirable

Our Goals:

(1) Demonstrate novel High-Throughput methods to perform more creep tests more quickly

(2) Apply those methods to more quickly characterize 3D printed 316L (future work)

Strategies To Decrease Separation Rates Among Highly Skilled Manufacturing Employees To Gain A Competitive Advantage, Rebecca J. Mileham

Walden Dissertations and Doctoral Studies

Company leaders have a decreased competitive advantage when losing their highly skilled manufacturing employees due to separation from the company. Grounded in Herzberg’s two-factor theory, the purpose of this qualitative single-case study was to explore strategies aeronautical leaders used to decrease separation rates among highly skilled manufacturing employees to gain a competitive advantage. The participants comprised eight frontline managers in southern California with 2 years or more experience using strategies to decrease separation in their organization. Data were collected through face-to-face semistructured interviews and analyzed using thematic analysis, resulting in four themes: pay and promotion; benefits and feedback; treatment from …

Use Of Mathematical Skills For Technical Condition Assessment Of Power Autotransformers, Dilafruz Rustamjon Qizi Abdullabekova, Nurali Berdiyorovich Pirmatov

Technical science and innovation

In this paper, we review innovative approaches to assess the technical condition of autotransformers using mathematical methods. The main purpose of these methods is to increase the efficiency of diagnostics and prevent possible failures in power systems. The developed mathematical expression is based on complex data analysis, application of statistical methods and machine learning technologies. This makes it possible to achieve more accurate and earlier detection of potential problems. As a result of these innovative approaches, the possibilities for early detection and prevention of faults are significantly increased. This is important for ensuring the smooth operation of power systems and …

Quantitative Assessment And Characterization Of Tool Wear Phenomena In Advanced Manufacturing Processes, Oybek Valijonovich Tuyboyov

Technical science and innovation

This paper explores the quantitative assessment and characterization of tool wear phenomena in advanced manufacturing processes, employing a multifaceted approach encompassing traditional measurements, image processing, machine learning, and predictive modeling. The study emphasizes the intricate dynamics of tool wear and its direct impact on cutting tool performance, addressing challenges in real-time monitoring and optimization of machining operations. Traditional methods like VBmax measurement are juxtaposed with advanced techniques such as the improved conditional generative adversarial net with a high-quality optimization algorithm (CGAN-HQOA), efficient channel attention destruction and construction learning (ECADCL), and shape descriptors based on contour, moments, orientations, and texture. Artificial …

Implementing A Solar Photovoltaic Station In Watering Systems Utilizing Complex Software, Akbarxon Sarvar O'G'Li Uroqov, Faxriddin Jaylovovich Nosirov, G'Olibjon Pardayevich Arzikulov, Zarina Amriddin Qizi Sayfutdinova

Technical science and innovation

This article explores the benefits of transitioning from traditional agricultural irrigation systems to more cost-effective alternatives powered by renewable energy sources. By integrating solar photovoltaic technology into irrigation processes, significant reductions in resource wastage, estimated at 45-50%, are achievable through the implementation of drip irrigation techniques. This results in enhanced agricultural productivity. Moreover, the utilization of solar panels in green zones mitigates surface temperature increases, contributing to a 2-5% boost in electricity production. Currently, irrigation facilities primarily rely on the main energy grid. However, transitioning to renewable energy sources decreases reliance on non-renewable fuels, reduces greenhouse gas emissions, and fosters …

Theory Of Development And Improvement Of The Mathematical Model Of The Methodology Of Public Control In The Management Of Occupational Safety And Industrial Risks, Aliakbar Khamidullaevich Rasulev, Sunnatilla Suleymanovich Suleymanov, Nodira Bakhadirzhanovna Gaibnazarova

Technical science and innovation

The article develops and analyzes a mathematical model based on a logical flowchart of the methodology of public control in the management of occupational safety and industrial risks and probability theory, according to the model, the results of compliance with the requirements of social cooperation on occupational safety lead to a sharp increase in the probability of reliability, management efficiency becomes higher. Analysis of the mathematical model of the developed logical flowchart based on probability theory has shown that when the parties cooperate to monitor the results of compliance with labor protection requirements, they lead to a sharp increase in …

Research Of The Influence Of Dust On Photovoltaic Modules, Anvarjon Mirolimov, Xalmurat Iliev

Technical science and innovation

The influence of dust concentrations on the current-voltage characteristics (voltampere characteristics) of photovoltaic modules (PVM) based on crystalline silicon in laboratory conditions. It was investigated how an uncleaned panel affects the output power. The tests were carried out in the city of Tashkent on the territory of the “National Research Institute of Renewable Energy Sources”. The objects were located co-plurally as specified in GOST R 60904-1 Photoelectric devices. Part 1. Measurement of current-voltage characteristics. Measurements of a cleaned photovoltaic module with a maximum power of 330 W and not a cleaned one of 236 W were obtained. Based on the …

Selective Oxidation Of Iron In Chalcopyrite For Enhanced Copper Recovery, Khojiakbar Shuxrat O'G'Li Sultonov, Shokhrukh Toshpulatovich Khojiev, Gulnoza Berdiyor Qizi Beknazarova, Malika Sayfullayevna Saidova

Technical science and innovation

This study explores the thermodynamic feasibility of selectively oxidizing iron contained in chalcopyrite mineral while preventing the oxidation of copper sulphide, with the ultimate goal of enhancing the copper concentration in the sulphide concentrate. A redox reaction in the solid phases between chalcopyrite and copper (I) oxide was constructed and subjected to thermodynamic analysis. The research identifies a crucial temperature range of 498-598 K (225-325 °C) as the most favourable for the redox reaction. The equilibrium constants at the selected optimal temperatures, 1.152 for chalcopyrite and 1.137 for copper (I) oxide, indicate that the redox reaction adheres to the expected …

Solving Water Resources Problems - Water Saving In The Republic Of Uzbekistan, Rustam Muxammatdjanovich Raximov

Technical science and innovation

In this article we will talk about the problems of water resources in the Republic of Uzbekistan. The problem of drinking water supply, solutions to provide drinking water to the population of Uzbekistan. The largest consumers of fresh water in Uzbekistan are farmers. Due to outdated infrastructure, 40% of water is wasted. Rising food prices and the risk of spreading disease are the first signs of water shortages that we may experience in the coming еars. Uzbekcosmos told how to solve the problem. Water is an invaluable resource used not only in the home, but also in the production and …

Modelling Of Heat Transfer In An Air Solar Collector, Shakhnoza Abduvaxitovna Sultanova, Jasur Esirgapovich Safarov, A.A. Mambetsheripova

Technical science and innovation

This study is the prediction, depending on time and different geographical and climatic situations, of different operating parameters: solar radiation, ambient and outlet coolant temperature, heat exchange coefficients and losses. All these determine, in the absence of measurements, the efficiency of the system modelled with existing models with respect to these parameters. These models are usually compared with experimental results. Before modelling, it is necessary to investigate the different heat transfer and exchange regimes that exist between the different elements of this system in order to eventually have a system of equations governing this exchange. The modelling principle is to …

A Study On The Influence Of Cutting Parameters On Surface Roughness And Visualization Through Contour Plots And 3d Surface Profiles, Zayniddin Nosirovich Muxiddinov

Technical science and innovation

This research investigates the intricate relationship between cutting parameterscutting speed, feed rate, and depth of cut and surface roughness in machining processes. Surface roughness is a key determinant of machined surface quality, and optimizing cutting parameters is crucial for achieving superior finishes. Employing advanced visualization techniques, including contour plots and 3D surface profiles, the study offers a comprehensive exploration of surface topography dynamics. Statistical analyses and regression modeling enhance the quantitative understanding of how cutting parameters interact to shape surface roughness. The research affirms the significant influence of cutting speed, feed rate, and depth of cut, providing practical insights for …