Engineering

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https://hdl.handle.net/20.500.14540/103

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Browsing Engineering by Academic Level "Other"

Now showing 1 - 7 of 7
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    BUILD AND TEST A SMALL SCALE LIQUID ROCKET ENGINE
    (I.O.E, 2024-03) Paudel, Bijay; Sah, Dhaneshwar; Das, Dipak; Teli, Pritam Sah; Bhattarai, Nawaraj
    A liquid rocket engine is a type of propulsion system that uses liquid propellants, typically a fuel and an oxidizer, stored separately in tanks and then mixed and burned in a combustion chamber to produce thrust. Liquid rocket engines are widely used in various space exploration missions, satellite launches, and military applications due to their high performance and controllability. In this paper the components of a liquid rocket engine i.e nozzle, combustion chamber and fuel injector were designed and tested. Two fuels LPG and kerosene were combusted with gaseous oxygen to generate thrust. The components were simulated in ANSYS to test their performance. Pressure fed system was adopted to pressurize kerosene and LPG didn’t needed to be pressurized as it was already stored under pressure. Multiple test results were recorded and exhaust plume was analyzed. The thrust of magnitude 12N and 30N was measured in two tests and in other tests only exhaust plume was analyzed. Both the tests had to stopped midway due to chamber and injector failure due to high temperature produced in chamber. The yellow flame was observed in the exhaust plume which is caused by the glow of hot unburnt carbon particles produced due to incomplete combustion. So, further works on materials, manufacturing process and cooling is required.
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    Design and Fabricate a Toroidal Turbine for Low Head Hydropower Application
    (I.O.E, 2024-05) Dhamala, Dipesh; Khadka, Mahesh; Gurung, Milan; Poudel, Shreedhar; Subedi, Tek Raj
    This final year project investigates the design, modeling, simulation, fabrication, and experimental testing of a toroidal turbine for low head hydropower applications. Toroidal turbines are a novel and innovative technology that shows promise for hydropower generation, especially in low head situations. The project aims to enhance the understanding of toroidal turbine geometry and efficiency through advanced computational fluid dynamics (CFD) simulations and experimental validation. Initially, limited data and information posed challenges, but insights from studies by other engineers and available research papers provided a foundation for turbine development. Recent advancements in manufacturing processes have made the production of this complex geometry more viable.
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    DESIGN, FABRICATION AND AUTOMATION OF INDUSTRIAL 6-DOF ROBOTIC ARM WITH ON-DEMAND MANUFACTURING CAPABILITIES FOR MASS/BATCH PRODUCTION INDUSTRIES
    (I.O.E, 2024-03) Chaudhari, Abishek; Sah, Gangotri; Timsina, Sameer; Poudel, Sneha; Maharjan, Sanjeev
    Industry 4.0, the fourth industrial revolution, combines digital technologies and automation in manufacturing. This project aims to design and control a six-degree - of freedom robotic arm with counterbalance mechanism and it also incorporates the concept of on-demand manufacturing and uses the model robotic arm to integrate it. The project seeks to enhance manufacturing operations, improve efficiency, and increase productivity. The robotic arm will be driven by servo and stepper motors controlled by Raspberry Pi B+ microcontroller. Real-time communication and control will optimize the manufacturing process, leading to streamlined operations and increased responsiveness. Additionally, weight reduction and counterbalancing mechanism has been implemented to ensure use of cost effective actuators. This project has the potential to transform the manufacturing industry by enabling direct communication between clients and manufacturers, eliminating intermediaries and revolutionizing manufacturing processes.
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    DESIGN, FABRICATION AND BENCH TEST OF FLAPPING WING AERIAL VEHICLE
    (I.O.E, 2024-03-13) Yadav, Anil Kumar; Timsina, Ashmit; Magar, Gopal Thada; Thapa, Santosh; Kayastha, Rajesh Kaji
    This project presents the comprehensive development and completion of a flapping wing mechanism, encompassing critical aspects including CAD modeling, gearbox design, wing structure design, tail design and overall body fabrication. Our efforts have culminated in the successful realization of a large-scale ornithopter, colloquially termed the flapping wing bird, intended to serve as a platform for the study of flapping wing flight control. On moving forward, our project has successfully performed bench tests including wind tunnel experiments for lift analysis through the load cell, smoke flow visualization and tuft flow analysis to validate the functionality, performance and aerodynamics of the developed flapping wing mechanism. The successful completion of this project marks a significant milestone in the advancement of flapping wing technology, demonstrating its potential for various applications in aerodynamics, bio-mimicry, and unmanned aerial vehicles
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    DEVELOPMENT OF HYBRID CROSS-CORRELATION AND OPTICAL FLOW METHOD FOR BACKGROUND ORIENTED SCHLIEREN
    (I.O.E, 2024-05-03) Chaulagain, Nimesh; Dhakal, Samiksha; Poudel, Shushant; Pandey, Sushil; Darlami, Kamal
    Flow visualization is one of the most active fields of research in fluid dynamics. The BOS technique is a modern measurement technique aimed at obtaining quantitative data based on variations of refractive index in optically transparent fluids. Flow parameters can be measured with a simple experiment configuration with the help of this technique. This project aims to develop a hybrid algorithm combining cross-correlation with an optical flow algorithm that lends itself to an efficient algorithm that extracts the data accurately. A test setup was built for image acquisition for testing of the algorithm. Chronos 2.1 high-speed camera and iPhone 11 mobile phone were used to obtain image data from experiments conducted with a thermal plume from a candle as a unit test subject and an under-expanded jet from a nozzle as the main test subject. The project successfully demonstrated the efficacy of the hybrid cross-correlation and optical flow algorithm in the context of BOS. By integrating these techniques, the project introduced a novel approach to quantitative flow measurement, showcasing its accuracy and reliability in obtaining precise measurements.
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    Machine Learning in Robotics, with it’s demonstration in Inventory transportation
    (I.O.E, 2024-04) Khatiwada, Bidhek; Basnet, Nabin; Kandel, Ramu; Belbase, Saroj; Poudel, Laxman
    The advancement of Industry 4.0 has led to the design of various control methods for the autonomous navigation of robots. While many works rely on Simultaneous Localization and Mapping (SLAM) or path planning systems for trajectory tracking, there are limitations when real-time obstacle avoidance and parameter reconfiguration are required. However, with the recent advancements in machine learning algorithms, new possibilities have emerged across various fields, including autonomous navigation systems. This has led to significant developments in the field, paving the way for innovative approaches and solutions. Our project thus, aims bring that development up and diversify it, by joining autonomous navigation system with other tasks. For this final year college project, we have decided to bring autonomous navigation system with material handling system. We have decided to make a forklift and have a demonstration of it working is a miniaturize factory warehouse. For the environment we have choose a place with boundaries and have workload. These workloads are to be carried to a designated place as marked by the computer program. For this project we have decide to use a camera only. Here in our project we have designed our own ML model along with other subsidiary model and will train them as well to complete our stated task.
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    SOUNDING ROCKET FOR ATMOSPHERIC STUDIES
    (I.O.E, 2024-03) Neupane, Mridul; Shrestha, Nischal; Giri, Prashant; Khadka, Sunil; Bhattarai, Sudip
    Sounding rockets hold a critical role in atmospheric exploration by facilitating the gathering and examination of various atmospheric factors like temperature, pressure, humidity, and chemical composition. The primary objective of this project is to conduct tests on the payload deployment system within a sounding rocket. The key challenges include developing a motor that is safe, reliable, and consistently performs as expected, as well as creating a recovery system, such as parachute deployment, capable of withstanding the demanding conditions of launch and subsequent high-speed or high-altitude flight. The study centers on the comprehensive design and development of rockets from scratch, encompassing the propulsion system, motor, and propellant, as well as the recovery system featuring a deployment mechanism and parachute, all built entirely from the ground up. Additionally, fully constructed avionics and payload systems are included. Specifically, a propulsion system capable of hoisting an 8-kilogram vehicle to an altitude of 1000 meters has been designed and manufactured, with the potential for further enhancements to increase altitude capabilities. Moreover, a versatile vehicle capable of conducting missions involving payload deployment and achieving full recovery with a built-in parachute deployment mechanism has been constructed.