Senior Design Mechanical Engineering

Mechanical Engineering Senior Design is a two-semester capstone experience that serves as the culmination of the undergraduate mechanical engineering curriculum at Texas A&M University–Kingsville. In this course sequence, students work in multidisciplinary teams to solve open-ended, real-world engineering problems by applying fundamental principles of mechanical engineering, including mechanics, thermofluids, materials, design, and systems integration. Guided by faculty mentors and often supported by industry sponsors, students follow a structured engineering design process that emphasizes problem definition, analysis, modeling, prototyping, testing, and professional communication. The Mechanical Engineering Senior Design experience prepares students for engineering practice by fostering technical competence, teamwork, ethical responsibility, and readiness for professional careers or advanced study

In Fall 2025, there were 2 MEEN Capstone Senior Design classes: MEEN 4263 Senior Design I (graduating Spring 2026) and MEEN 4264 Senior Design II (graduating Fall 2025). Each class had 5 teams of 5 students each. Their topics and team photos are given below:

Oxygen-Butane Rocket Motor Design

Team Members: Cavazos, Brendon G. Estrada, Noah L. Houf, Daniel R. Kawamura, Nicholas J.
Tonche, Joseph J.

Faculty Advisor: Dr. Arturo Rodriguez

Abstract

This project presents the development, fabrication, and testing of a simplified-fidelity gaseous oxygen-butane rocket motor built as an instructional and educational prototype for undergraduate propulsion studies at Texas A&M University-Kingsville. The design will emphasize safety, affordability, and reusability that are achieved by the use of non-cryogenic propellants. commercially available components, and sub-100 psi pressure chambers. One of the major objectives is to demonstrate the fundamental principles of rocket propulsion; namely, thrust generation, nozzle expansion, and propellant flow control. These will be achieved under controlled and constant environmental conditions. The oxygen-butane system will incorporate a stainless-steel combustion chamber, a pressure-regulated dual-feed setup, and interchangeable 3D-printed ABS nozzles to help study the role geometry plays in performance. The experiment integrates ASTM G88 safety guidelines for safe handling of oxygen and provides students with experience in combustion analysis, instrumentation, and mechanical design. Ongoing testing will focus on measuring thrust output, evaluating ignition reliability, and validating theoretical assumptions and predictions of specific impulse and efficiency. The results will guide future versions in automated controls and improvements in material performance.

Tilt Wing Drone

Team Members: Hudspeth, William G. Nash, Kristina Olivares, Lucas J. Rodriguez, James R. Torres, Jose

Faculty Advisor: Dr. Sel Ozcelik

Abstract

The tilt wing drone drone project focuses on the design, fabrication, and testing of a cost-effective hybrid unmanned aerial vehicle (UAV) that merges the long-endurance efficiency of fixed-wing flight with the vertical maneuverability of multirotor systems. This design addresses two major limitations of existing UAV technologies: the limited flight duration of conventional quadcopters and the runway dependence of fixed-wing aircraft. The team proposes to develop a lightweight, tilt-rotor system capable of autonomous vertical takeoff with a transition to forward flight and vertical landing. The drone’s core application will be search and surveillance, which can be utilized in many industries. The project integrates open-source flight control systems, with aerodynamic modeling, thrust-to-weight calculations, and structural analysis to ensure a stable and reliable platform suitable for both academic research and real-world field use.

Massey Furguson Transmission

Team Members: Calvillo, David Garcia, Johnathan Gonzalez, Luis R. Solis, Thomas A. Walker, Tyler W.

Faculty Mentor: Dr. Hong Zhou

Abstract

Our report presents the conceptual design of an alternative manual transmission system for the Massey Ferguson 240 tractor to increase torque output and towing capacity. The report addresses the agricultural industry’s need for efficient and affordable equipment capable of performing under demanding field conditions without requiring full machinery replacement. By means of a literature review, the team gathered data on hydrostatic and manual systems, thereby confirming that manual constant mesh transmissions are better suited for high-torque applications. Moreover, a patent review showed minimal restrictions due to the age of the model, allowing design flexibility. Theoretical analyses and experimental data from prior studies revealed that torque performance depends on multiple variables: soil type, speed, and gear ratios. Our goal is to achieve at least a 20% torque increase while maintaining system compatibility and reliability. ASTM and AGMA Standards will be utilized in the design effort.

Lunar Trencher

Team Members: Andersen, Conor D. Cavazos, Kyle C. Davis, Zachary M. Martinez, Marcus Mcbrayer, William G. Regalado, Diego R.

Faculty Advisor: Dr. Larry Peel

Highlight: TSGC (Texas Space Grant Consortium) Design Challenge

Abstract

Farscape Engineering seeks to assess the viability of burying fiber optic and power cable in the lunar regolith using a self-propelled battery powered machine. The importance of this challenge stems from the greater goal of a permanent human presence on the moon, which requires lunar habitats having both power and the ability to communicate locally without having to use earth as a relay. Therefore, it is imperative to develop a solution that would allow an operator to safely and efficiently lay fiber optic and power cable concurrently. At this point, the team is in the conceptual design phase. Reasonable constraints and objectives have been established using information from the literature review to make appropriate assumptions about the lunar regolith. The team plans to begin modeling, analyzing, and optimizing various components of the proposed machine in spring 2026.

Lunar Storage Modules

Team Members: Cavazos, Gabriel L. Garza, Audrey L. Nesmith, Sarena Saldivar, Josue Salinas, David A.

Faculty Advisor: Dr. Sangsoo Lee

Highlight: NMSU WERC Competition

Abstract

This project presents the design and preliminary research/development of a logistics container for NASA’s Survive The Night: Lunar Logistics Challenge. The goal of the challenge is to create a storage container that can maintain strict internal temperatures of 4-21 degree Celcius, and pressures of 56-101kpa. The container is to withstand 30 days of unmaintained and unmanned exposure to the lunar environment, followed by 28 days of crew use and maintenance. Lunar extremes include the temperature, which ranges from 130F to -334F, to the lunar regolith which is extremely abrasive and harmful to both supplies and the human body. Research was conducted into past NASA designs of their lunar missions. Concepts were drawn from these past designs, including material selections, insulation, and standards. The promising design features MLI (Multi-Layered Insulation) and a vacuum sealed annular space to help regulate internal temperature. The container will also include sensors to monitor internal pressure and temperature throughout the mission.

Thermo-Plastic Recycling

Team Members: Gonzalez, Diego A. Gutierrez, Dax A. Kopp, Hailey M. Lozano-Cantu, Juan R. Oboh, Ehizefua E. Trevino, Rene G.

Faculty Advisor: Dr. M. Hossain

Abstract

This project outlines the design and development of an automated thermoplastic recycling system developed at Texas A&M University-Kingsville. The primary goal of this project is to transform discarded 3D-printed components into high-quality, reusable filaments, or pellets allowing for a sustainable approach for future manufacturing. The proposed system will integrate a shredding mechanism, advanced thermal processing and a precision extrusion technology to process common 3D printing polymers such as PLA, ABS, PETG, and TPU into uniform particles and filament with minimal material degradation. Utilizing the combination of mechanical, thermal and control systems engineering, our design seeks to produce consistent filament in dimensions within ±0.1 mm. These dimensions will allow the retention of at least 80% of the tensile strength of virgin material utilized. Key engineering components that will be used to ensure this include heat transfer, torque, and structural simulations and/or integrity, will be performed to ensure safe operation under repetitive use. The addition of smart sensors as well as closed loop controls will enable real-time monitoring of the temperature and extrusion quality, allowing for real-time adjustments for operating parameters to be made for optimal performance. The design philosophy is centered around compactness, modularity, and accessibility. While this project is driven by engineering innovation, it also focuses on contributing to environmental conservation and improving economic practices by reducing plastic waste and production costs.

Design of a Reciprocating, Pneumatic Pump Team

Team Members: Baker, Charles G. Davis, Kyleigh D. Guerra, Luis E. Mills, Benjamin D. Torres, Nicolas J.

Faculty Advisor Dr. Hong Zhou

Abstract

This project will highlight the development and optimization of existing hydrostatic pump designs. The project will initially evaluate three styles of pumps: pneumatic piston, gear, and axial piston-based pumps. The current design limits the pump's capabilities, as seen in volumetric flow, discharge pressure, and overall efficiency. After analyzing and optimizing which type of pump will yield optimal results, the next step will be to begin prototyping key components for an assembly. Prioritization of safety and compliance, cost-effectiveness, efficient operation, and versatility during the design and assembly process is essential. Prototyping key components will involve using CAD drawings and CNC machining. This will ultimately be based on the budget comparison between the three styles of pumps. The complete assembly of the modified pump will deliver experimental results that support the analytical results of the expected performance.

Transmission Design

Team Members: Doria, Martin Guerrero, Ezekiel Hernandez, Bryan Y. Perez, Alberto Soto, Lauro H.

Faculty Mentor: Dr. Arturo Rodriguez

Abstract

Our four-speed manual transmission system features optimized gear ratios and alloy steel AISI 8620 components for durability. The design of the transmission focuses on the ability to handle a maximum input torque of 650 N-m with factors of safety commensurate with AGMA standards. The use of AISI 8620 alloy steel ensures resistance to wear and toughness under high loads while following AGMA standard charts. AGMA formulas and FE analysis methods are being employed to calculate bending and contact stresses, with results indicating bending stresses and contact stresses for each gear set. Through these calculations, the optimal transmission component geometry (gears, shafts, bearings, etc.) can be found, ensuring the design meets the required safety margins and performance criteria.

Intercepting Drone

Team Members: Cantu, Marc A. Castellanos, Luke A. Ramirez, Kevin R. Tran, Mike D. Zamzow, Matthew

Faculty Advisor: Mr.Rajashekar Mogiligidda

Abstract

The Multi Aerial Net Target Interception Drone (MANTID) initiative introduces a cutting-edge unmanned aerial vehicle (UAV) platform designed to detect, engage, and neutralize rogue drones in densely populated urban areas. Traditional net-launching countermeasures are hampered by single-use limitations, restricted agility, and brief endurance, rendering them unsuitable for evolving, multi-threat situations. MANTID mitigates these shortcomings through a flexible UAV equipped with a sequential net-ejection system, a robust yet lightweight carbon-fiber chassis, and a rapid battery exchange mechanism to enable sustained missions. Core features include a high-torque spin-up and trigger assembly driven by efficient brushless DC motors, an additively manufactured launch tube, and a thermoplastic polyurethane (TPU) ribbon-coil net optimized for quick unfurling and secure target capture. Comprehensive analytical modeling, simulations, and finite element analysis (FEA) were employed to assess propulsion needs, energy efficiency, and component resilience, confirming durability amid real-world stresses. Computational evaluations further verified the net's ejection velocity and stability. Overall, MANTID delivers a versatile, affordable, and humane tool for airspace defense, propelling advancements in anti-drone measures for security forces, military operations, and civilian protection.

Mars Rover

Team Members: Garza, Gerardo Hernandez, Alan M. Lazo, Silas Q. Lopez Castillo, Brandon E. Neatherlin, Triston Rodriguez, Jaime A.

Faculty Advisor: Mr.Rajashekar Mogiligidda

Highlight: Texas Space Grant Consortium (TSGC) Design Challenge

Abstract

Building a Mars rover for exploration tasks on Mars presents numerous challenges, particularly in relation to the Martian atmosphere’s dust. The primary issue is the accumulation of dust on the rover’s solar panels, which impedes efficient solar absorption, thereby affecting energy efficiency and operational lifespan. This project seeks to address this challenge by incorporating an automated cleaning mechanism to remove dust from the solar panels, thus enhancing the rover’s power efficiency and longevity. The rover is equipped with a rocker-bogie suspension system to navigate the harsh Martian terrain, and it utilizes cost-effective, lightweight materials to reduce weight and conserve power. Through comprehensive research, the project demonstrates the practicality of the cleaning system as a solution for maintaining clean solar panels. This innovation is expected to significantly improve the operational lifespan and energy efficiency of future solar-powered rovers, supporting extended Mars exploration missions.