Theses (Department of Vehicles Engineering)

Állandó link (URI) ehhez a gyűjteményhez

https://hdl.handle.net/2437/360725

Theses collection of the Department of Vehicles Engineering. The collection was started in 2023.

At the University of Debrecen, in accordance with the 2022 amendment to the 2011 Higher Education Act, student theses are only accessible from devices connected to the University's Eduroam WiFi network or from a university IP address.

“The thesis or diploma work of a student who has successfully passed the final examination shall be stored in full in the academic system of the higher education institution, and a record shall be maintained thereof. The stored theses and diploma works – with the exception of parts classified as confidential in accordance with the relevant legislation – must be made accessible and searchable without restriction through the academic system.” Further info on the National Higher Education Act in Hungarian: Felsőokt. tv. (új) - 2011. évi CCIV. törvény a nemzeti felsőoktatásról - Hatályos Jogszabályok Gyűjteménye.

Böngészés

Megjelenítve 1 - 20 (Összesen 50)

Korlátozottan hozzáférhető
A comparative analysis of Instrument Landing System and Ground-Based Augmentation System Landing System for aircraft landing guidance
Azjargal, Gombo-Ochir; Géza, Husi; DE--Műszaki Kar
Achieving a successful aircraft landing demands reliable and safe approach guidance, particularly under low visibility conditions. Although various aircraft landing guidance systems coexist in aviation, this thesis concentrates on a comparative analysis of the Instrument Landing System (ILS) and the Ground-Based Augmentation System Landing System (GLS) from multiple perspectives. The fundamental principles of each system are explained in detail to provide distinction between their operational and technical characteristics as well as their working mechanisms. Core differences and similarities between ILS and GLS are subsequently compared in terms of accuracy, reliability, safety, and economic considerations. Furthermore, a case study is presented to illustrate the current application of both systems, followed by future trends in landing guidance technologies. Through this comparative analysis, the thesis provides a comprehensive understanding of ILS and GLS, including their distinctions and potential contributions to aviation.
Korlátozottan hozzáférhető
Aircraft Maintenance
Al Masoud, Hamza; Menyhárt , József; DE--Műszaki Kar
The thesis looks at key areas of aircraft maintenance and engineering organizations, emphasizing the importance of Total Productive Maintenance (TPM) in aviation. It dives into ideas for improving maintenance operations to increase aircraft availability and dependability. The research focuses on the relevance of landing gear within this paradigm, recognizing their important role in aircraft safety and functionality. By using TPM concepts, the study hopes to improve overall efficiency, minimize downtime, and extend the Mean Time Between Failures (MTBF). The thesis conducts a thorough investigation of the dynamic linkages between engineering organizations, TPM implementation, MTBF extension, and the critical function of landing gears in maintaining aircraft operational integrity. This research aims to give significant insights into the complexities of airline maintenance management.
Korlátozottan hozzáférhető
An overview of PW150A engine, its design, and performance
Momes, Erick Japhet; Kostyák, Ferenc; DE--Műszaki Kar
This thesis aimed at describing the operational details of a turboprop engine, focusing on the PW150A. Different sections of the engine design have been illustrated with their key components. The engine performance has been studied and its calculated value presented, some of the data are assumed due to their sensitive nature that they are kept confidential by the manufacturer. The possible upgrades will be focusing on improving the material used in the design and also lowering emission.
Korlátozottan hozzáférhető
Analysis of TECNAM P2006t Variable Pitch Propeller System
Uzdil, Mehmet Kaan; Zsolt, Tiba; DE--Műszaki Kar
Comprehensive analysis of Tecnam P06T types propeller system. Explanation of how variable pitch system work and areas of use. Comparing the system with other propulsion systems in the industry. Manufacturing, testing and maintenance proccesses of the system
Korlátozottan hozzáférhető
Application of Crew Resource Management in Commercial Aviation
Mülayım, Tuana; Geza, Husi; DE--Műszaki Kar
This work aimed to deeply analyze the application of Crew Resource Management. It intends to support the development of CRM via covering crew resource management as broadly and comprehensively as possible, including research, information, and reflections on all aspects of crew resource management; in doing so, it aims to examine this subject more comprehensively and in greater detail than it is currently addressed, as well as to provide resources for future studies.With the information, facts, research, analyses, and opinions in this work, it is intended to give a visionary aspect.This thesis analyzes the application of CRM in commercial aviation while exploring the role of it in enhancing aviation safety, assesses its background and its position in commercial aviation.
Korlátozottan hozzáférhető
Augmented Reality and Artificial Intelligence in the field of Aviation
Mendygaliyev, Nurlan; Erdei, Timotei; DE--Műszaki Kar
This thesis focuses on the implementation of artificial intelligence and augmented reality in the field of aviation, focusing on human fatigue detection systems. An overview of existing appliances in various spheres, including aviation, is given and analyzed. A basic human fatigue detection system based on real-time object detection was developed. However, it lacks accuracy due to one-step detection procedure, which is crucial in aviation, where high standards of safety are vital. Overall, there are promising opportunities for such technologies to enhance aviation safety, and therefore they should be applied first in flight simulators for testing.
Korlátozottan hozzáférhető
AVIATION SAFETY, IN THE PAST, PRESENT AND FUTURE
ALZUBAIDI, SARAJ; MENYHART, JOZSEF; DE--Műszaki Kar
This thesis explores the evolution of aviation safety from historical foundations to modern and future challenges, emphasizing human factors, technical innovations, and regulatory frameworks. A significant portion focuses on pilot behavior, risk perception, and decision-making, using both historical accident data and theoretical models. I conducted an original student-led survey targeting pilot trainees at PHARMAFLIGHT, analyzing how current flight organizations manage workplace risk and safety procedures. The research identifies a gap between perceived and actual risks among pilots and highlights the critical role of training and corporate culture in influencing pilot decisions. Through scenario-based analysis, I evaluated how pilots respond to conflicting safety, economic, and productivity pressures during high-stakes flight situations. The work concludes by proposing enhanced risk mitigation strategies, combining structural aircraft design, safety-centered training, and system-based decision support tools, reflecting my direct contribution to understanding and improving aviation safety from a student pilot's perspective.
Korlátozottan hozzáférhető
Beyond the skies: The historic evolution of jet engines
Nassar, Seif; Géza, Husi; DE--Műszaki Kar
In my thesis, the beginning of the jet engine and the pioneer inventors are discussed. the contrebution of Hans Von Ohain and Sir Frank Whittle, and their efforts were illustrated briefly with their impact on the industry. The pre-jet era was described when reciprocating engines were prevalent on aircraft designs. Early jet designs such as Turbojets and pulse jets were explained, and the impact on fuel economy presented by further developments giving birth to Turbofan engines was emphasized. Supersonic propulsion jets were explained, such as Ramjets and Scramjets, and a comparison between them was made. A scientific thrust calculation of an Ideal Ramjet engine is presented with a calculation sample. Airlines future expectations from engine manufacturers was discussed with three examples of the most advanced engines in the making or already in service.
Korlátozottan hozzáférhető
Comparative analysis of aircraft wing profiles
Badrakh, Oyunzaya; Telepoczki, Zoltan; DE--Műszaki Kar
The thesis “Comparative Analysis of Aircraft Wing Profiles” explores how different airfoil shapes affect lift and airflow using 2D simulations in MATLAB’s CFDTool. It focuses on the NACA 2412 airfoil tested at various angles of attack to study aerodynamic behavior and stall. The research is grounded in aerodynamic theory, including Bernoulli’s principle and wing geometry. Results showed varying lift performance among profiles and highlighted the limits of simplified simulations. Despite using basic tools, the study offers useful insights for future aerodynamic design and analysis.
Korlátozottan hozzáférhető
CORRELATION BETWEEN HUMAN FACTORS AND AVIATION ACCIDENTS, AND MANUFACTURERS AND CIVIL AVIATION AUTHORITIES' ROLES IN MITIGATING THEM
Hossain Safkat, Mohaimanul; Geza, Husi; DE--Műszaki Kar
This thesis explores the critical role of human factors in aviation accidents and examines the efforts of manufacturers and civil aviation authorities to mitigate these risks. It categorizes human factors into errors, psychological and physical issues, and organizational flaws, highlighting their significant impact on aviation safety. The study evaluates current safety measures, including Crew Resource Management (CRM), Safety Management Systems (SMS), and Threat and Error Management (TEM), while identifying gaps in implementation. It emphasizes the importance of proactive regulatory frameworks, continuous training, and fostering a culture of safety awareness. The research offers insights into enhancing aviation safety and reducing accidents by analyzing roles and regulations from organizations like the FAA, EASA, and ICAO.
Korlátozottan hozzáférhető
COVID 19 IN AVIATION - IMPACTS, COMPARATIVES AND SOLUTIONS
Gomes Pereira, Henrique; Husi, Géza; DE--Műszaki Kar
The thesis "COVID-19 in Aviation: Impacts, Comparatives, and Solutions" explores the severe effects of the COVID-19 pandemic on aviation, particularly in Brazil and Europe. It highlights drastic declines in passenger traffic and financial losses. The study examines technological advancements like HEPA filtration and UV disinfection systems used to enhance safety. It contrasts the responses of Brazil and Europe, noting Europe's support measures and Brazil's growth potential in the low-cost airline sector. The thesis emphasizes the industry's resilience and the importance of innovative solutions for future crisis management.
Korlátozottan hozzáférhető
Crashworthiness in The Safety of Small Aircraft
Saleh, Mahmoud Gamal Khalil Esmail; Kertész, József; DE--Műszaki Kar
This thesis investigates crashworthiness in small aircraft, identifying significant gaps in safety standards compared to commercial aviation. Due to their lightweight design and limited cabin space, small planes are highly vulnerable during crashes. Experimental tests compared traditional aluminum alloys with advanced composites like carbon fiber and aramid, demonstrating superior impact absorption and cabin protection from the latter. Structural reinforcements such as crushable zones and reinforced fuselages improved survivability. Additionally, energy-absorbing seats combined with advanced restraint systems significantly reduced forces on occupants. Based on these findings, the study recommends adopting composites, structural reinforcements, and enhanced seating systems as standard in small aircraft design, along with updates to crashworthiness regulations.
Korlátozottan hozzáférhető
Design of a partial cowling attached to a Propfan Engine to aid in noise reduction
Ekochu, Luke; Abdullah, Masuk; DE--Műszaki Kar
The Propfan engine, a revolutionary design that combines the benefits of turbofan and turboprop engines, has been revived in the aviation industry after being abandoned 40 years ago. Engineers eliminated the cowling on a turbofan engine and attached propellor blades, creating a highly fuel-efficient and powerful engine but causing noise. This issue and regulatory issues made it difficult to use. Modern technology has improved methods to reduce noise, including propeller blade design and computational fluid dynamics. Partial cowlings, a concept tested on turbofan engines, have not been fully explored for propfans. This paper investigates the potential benefits of partial cowlings in propfan engine design and performance, aiming to improve their perception among stakeholders in the aviation industry. The study aims to test the effect of partial cowlings on propfan engine performance and design.
Korlátozottan hozzáférhető
DEVELOPMENT OF PRESSURE SENSORS FOR AIRCRAFT FUEL SYSTEMS
Salameh, Ahmad Ziad Ahmad; Tiba, Zsolt; DE--Műszaki Kar
This thesis develops a pressure monitoring system for the Cessna 172’s pump-fed fuel setup, targeting faults such as leaks, blockages, contamination, pump starvation, and pressure drops. The aim is not only to detect these problems early but also to apply targeted responses based on the fault type. A pressure sensor continuously monitors the fuel line; its analog signal is converted digitally by a built-in Analog to Digital Converter, which operates in parallel with the existing approved path. This ensures that there is no interference. The digital stream passes through SCADA and Rawan layers before reaching a decision module. An AI engine acting as co pilot analyses the data, learns from it, classifies faults, and triggers corrective actions or suggests corrective steps to the pilot. A model of fuel system dynamics is modelled in MATLAB/Simulink using Bernoulli and Darcy-Weisbach equations to address both normal and faulted operation. Performance analysis indicates the ability to detect faults early with a high degree of accuracy in pressure drift detection to within 0.1% of range in under 30 seconds. This paper will also cover economic study for future implementation as well as examines environmental and safety implications related to fuel-system health monitoring. Recommendations are provided for extending the system to certification pathways and cockpit integration in general aviation aircraft.
Korlátozottan hozzáférhető
Dynamics of Subsonic Airflow and Integration of a Home Simulator Setup
Uygun, Alim; Erdei, Timothy István; DE--Műszaki Kar
I have written basics of wings in my thesis as literature review and I also searched and added simulation side of pilot training and my HeadTrack which I built it in my home with my equipments and my own budget.
Korlátozottan hozzáférhető
Enhancing Safety Measures in Aviation: Challenges, Innovations, and Future Directions
Singh, Mahinder; Menyhárt, József Dr.; DE--Műszaki Kar
The thesis investigates the critical importance of aviation safety and explores historical, current, and emerging challenges in the field. It identifies human factors, regulatory complexity, and technological limitations as persistent threats to safe aviation operations.Safety culture, organizational behavior, and proactive safety management systems are emphasized as vital pillars for mitigating risks.The study highlights the role of international regulatory bodies like ICAO, FAA, and EASA in shaping safety standards and compliance frameworks.Technological advancements such as AI, automation, and predictive analytics are discussed as game changers in modern safety practices.The thesis includes case studies showcasing global best practices and lessons learned from successful safety initiatives.Training and human factors are analyzed as core components in reducing errors and fostering a resilient safety culture. Methodologically, the research uses both quantitative and qualitative approaches to analyze safety data and stakeholder perspectives.Based on findings, the thesis provides actionable recommendations for industry stakeholders to enhance safety performance.It concludes by advocating for a future-focused, collaborative approach to safety that embraces innovation, regulation, and continuous improvement.
Korlátozottan hozzáférhető
Enhancing Sustainability in Aviation
Shedeed, Mohamed; József, Menyhárt; DE--Műszaki Kar
The thesis explores sustainable aviation's pursuit to reduce carbon emissions, focusing on technology, air traffic management, and socio-economic aspects. It questions the inherent sustainability of aviation, comparing it with other transportation modes. Solutions for aviation sustainability encompass airport infrastructure improvements, sustainable ground vehicles, and innovative use of aircraft airframes for energy generation. Initiatives to raise passenger awareness and facilities promoting sustainability are highlighted, addressing time wastage issues associated with air travel. The thesis concludes by discussing sustainable aviation fuel options, emphasizing the potential for decarbonization and increased efficiency in reducing greenhouse gas emissions.
Korlátozottan hozzáférhető
Environmental and sustainable aspects of aviation: emission of pollutants and particles, sustainable aviation fuel and electromobility
Baigalmaa, Baljingarma; Bellér, Gábor; DE--Műszaki Kar
Aircraft operations contribute to climate through a series of complex processes, including the emission of greenhouse gas (GHG), particulate matter, and contrail formation. Global aviation is responsible for approximately 2.4 percent of annual anthropogenic carbon dioxide emissions and has contributed 4 percent to global warming to date. In 2015, the Paris Agreement was established with the long-term ambition of limiting the temperature rise to 2 Celsius degrees this century. In response, the aviation sector has begun making the shift toward more sustainable practices to reach carbon net zero by 2050. Among various measures and mitigation strategies, sustainable aviation fuel and electrification of aircrafts have become focus areas. However, some of the emissions and sustainable implications of these solutions are overlooked by the industry. The present work provides brief reviews on them.
Korlátozottan hozzáférhető
Evaluating the development of the Airbus A320 aeroplane
Majtényi, Boldizsár; Husi, Géza; DE--Műszaki Kar
The Airbus A320 program is one of the most successful commercial aircraft programs in the history of aviation. This thesis offers a comprehensive examination of the program. Trough the history and context, with a particular focus on the significant turning points in its evolution is also discussed in this study. The fly-by-wire technology, composites, and sophisticated aerodynamics are only some of the breakthroughs and technologies that are investigated in this research. In the thesis, the difficulties in engineering that arose throughout the production of the airplane are analysed, as are the strategies that were utilized to find answers to those difficulties. Further discussion analyses the topics such as the utilization of modern materials and its impact on the aviation industry, including its economic benefits. In conclusion, the thesis offers an assessment of both the present standing of the A320 program and its potential in the years to come. This thesis, in its whole, makes a contribution to a deeper understanding of the A320 program and the impact it has had on the aviation industry.
Korlátozottan hozzáférhető
Evaluation of Repair Techniques for Sheet Metal and Composite Structures in Airline Operations
Thamburan Kandi, Abhinave; Zsolt, Tiba; DE--Műszaki Kar
The thesis offers a comparative analysis of the repair methods of sheet metal and composite aircraft structures in terms of systematic literature review of more than 40 authoritative sources. The paper compares riveted, bolted and bonded repairs on aluminum structures, scarf, step-sanded, external patch, bolted, and injection repair on composite structures in the commercial aviation. The most important results indicate that sheet metal repairs are more flexible in operation and that the various acceptable techniques have been able to restore 80-100 percent of the original strength, whereas composite repairs perform better (80-95 percent in scarf repairs) but need specialized equipment and controlled environments and highly qualified workers. The study determines trade-offs that are critical in terms of structural performance, operational feasibility, time requirements, and cost considerations and the effect of trade-offs on maintenance decision-making. Maintenance organization-specific advice and recommendations regarding capacity development roadmap and workforce training priorities in maintenance organizations are also presented depending on the fleet size. This paper determines decision support systems that optimize the technical performance against operational limit to guarantee airworthiness and cost efficiency in current maintenance processes in aircraft.

Böngészés

Theses (Department of Vehicles Engineering) Cím szerinti böngészés

Találat egy oldalon

Rendezési lehetőségek