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Optimization of Turbofan Engine Performance through Blade Profile Modification

This thesis reports detailed research performed to optimize the geometries of blade rows in turbofan engines through analysis with computational fluid dynamics. The study was conducted systematically by employing theoretical analysis, along with numerical computation used to evaluate the aerodynamic performance of two different blade types. The methodology consisted of the design of blade geometries in SolidWorks, mesh generation using structured and unstructured elements, and CFD simulations on ANSYS Fluent with a focus on cascade analysis. The study commenced with the development of two designs below: Blade Design 1 having a height of 1300 mm, chord length of 294 mm at the base, and 700 mm at a height of 750 mm; Blade Design 2 at a similar height, differing only in leading edge diameters and chord lengths at different cross-sections. This enables detailed meshing such that near-wall regions and critical flow features are resolved with adequate resolution. Using a pressure-based solver, the CFD simulation was performed using the k-ω SST turbulence model, which is proper for capturing near-wall effects and handling adverse pressure gradients. Inlet velocities were considered between 1 and 40 m/s, thus analyzing performance under different operating conditions.

Author: Ajiksun Kumaradhas

Supervisor: Adham Ahmed Awad Elsayed Elmenshawy

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Aviation Engineering

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Improving the performance of logistics company using CRM and other techniques.

This thesis delves into the implementation and impact of Customer Relationship Management (CRM) systems within the logistics industry, with a detailed case study of Orion Lift. The research encompasses a thorough financial analysis and logistical performance evaluation post-CRM integration. Orion Lift, a local logistics company, faced several operational challenges, including inefficiencies in customer management and high operational costs. By integrating a CRM system, the company aimed to streamline its processes, enhance customer satisfaction, and improve overall business performance.Financial metrics were meticulously calculated before and after the CRM implementation. The results indicate substantial improvements across all metrics, with notable increases in revenue and customer retention rates, and reductions in operational costs and customer acquisition costs. The thesis also discusses the potential financial and operational benefits of CRM systems, supported by comparative analysis with other effective CRM implementations in the logistics sector. Overall, the thesis provides a comprehensive assessment of the benefits of CRM systems in logistics, using Orion Lift as a case study.

Author: Aleksandr Usmanov

Supervisor: Genadijs Gromovs

Degree: Professional Bachelor

Year: 2024

Work Language: Latvian

ADVANCEMENTS IN TAILLESS AIRCRAFT TECHNOLOGY: A COMPARATIVE ANALYSIS AND PROPOSAL FOR COMMERCIAL IMPLEMENTATION

The military has a problem in developing the most sophisticated flying wings due to the relevance of tailless aircraft in military applications and the ongoing advancements in the aviation sector. This study paper delves into the extensive history of tailless aircraft, covering everything from their inception to the most cutting-edge designs available today. To develop in control systems, especially fly-by-wire technology, tailless designs are now more practical for commercial use since they are more stable and easier to handle than they were in the past. The main goals of this research are to assess the current literature on important parts of tailless aircraft technology and provide a thorough plan for their commercial deployment.The improved splitter increases the velocity by 40 m/s, although the obtained maximum velocity distribution across the aircraft was 29.3 m/s at the rear end. As a result, the aircraft is designed with higher lift and reduced drag, allowing for smoother flight in a variety of applications.Around 53% of the lift force generated is enhanced by redesigned designs. Based on the results of the study, the aircraft with the improved design had a higher lift force and reduced drag by dividing the airflow.

Author: George Mathew

Supervisor: Adham Ahmed Awad Elsayed Elmenshawy

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Aviation Engineering

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Development of Cross-Platform Mobile Application “Health Care for Pets”

The aim of this work was to develop a cross-platform mobile application, “Health Care for Pets,” with the main objective of providing pet owners a comprehensive, user-friendly tool for effective pet care.In the course of the work, an analysis of the subject area was conducted, and existing analogues were analysed. The system and functional requirements, as well as the main users for the application, were identified. Based on the analysis and requirements, the application, server, data access component and database were designed. The system was implemented using Visual Studio, in the C# programming language. The developed application was tested in the final stage.The application created during the bachelor's thesis meets all the requirements.

Author: Roberts Dubovskis

Supervisor: Karina Kostjkina

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Computer Science

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Personal Information Management using Adaptive Information Systems

Nowadays people struggle to handle their personal information in an organized and efficient manner. In average individual consumes around 74Gb per day (Heim, 2017), which contributes to to information overload and limits the amount of information that the human mind can handle.Due to human uniqueness, all people have different information preferences. Adaptive Information Systems (AIS) is a relatively new direction of research on the crossroads of Information Science, Human-Computer Interaction and Artificial Intelligence. It is an alternative to the traditional "one-size-fits-all" approach in the development of Information Systems. Considering that Information overload is a user-personal problem, AIS allow involve an adaption process inside the information system activate reinforcement learning for building knowledge about the user’s behavior in information processing. As a next step collected knowledge AIS is used for performing self-adaptive changes inside the system with the final goal of reducing information overload.This study proposed a new way of handling and control information overload by using AIS, which is supposed to consider and adapt to user's personal experience in personal information processing.

Author: Sergejs Paškovskis

Supervisor: Boriss Mišņevs

Degree: Master

Year: 2024

Work Language: English

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