Digital Commons Network^™

W22 Landing Gear And Door Uplocks Final Design Review (Fdr), Jason Szeto, Garrett Donovan, Christopher Edward, Kevin Lee

Mechanical Engineering

This Final Design Review report outlines the senior project sponsored by General Atomics Aeronautical Systems, Inc., to design an unmanned aerial vehicle landing gear uplock and door locks. The main goal of the project is to create a proof-of-concept uplock that does not operate on hydraulic power, has minimal moving parts, and can support the weight, vertical acceleration and aerodynamic loads on the landing gear or doors. The document covers the background research, design specifications, design selection process, justifications, manufacturing, and verification of the functional prototype.

Automated Mini-Tubular Ceramic Production, Hunter Brooks, Daniel Freeman, Leo Taranta-Slack

Mechanical Engineering

Researchers at Lawrence Livermore National Laboratory need a way to increase the rate of manufacturing of mini-tubular ceramics to be used in testing particulate air filters. This document outlines our process from researching and writing an initial scope of work all the way to fabricating and testing a final prototype. This journey takes us through the background research, ideation process and selection of a final design. We also detail the desired engineering specifications and our concept selection process. We dedicate a significant portion of this report to discussion of our final design. We delve into how it was manufactured as …

Gaf Fiberglass Mat Slitter Blade Sharpener, Mark D. Breaux, Bradley M. Smith, Esteban Carrillo, Carlos Espinoza

Mechanical Engineering

This document contains an overview for the offline slitter blade sharpening system created for GAF to sharpen their current cutting tools in a timely and safe manner without hindering the timeline and production of their assembly line. This design was developed by four undergraduate students at from Cal Poly, San Luis Obispo. This document first investigates background information of any patents, current sharpening device, sharpening safety standards, or literature review that may be useful in a sharpening mechanism device. This document also contains our design concept prototype, which consists of three main features, the use of a top guard for …

Gaylord Produce Removal Machine, Marcus Takashi Hirose Lee, Jacob Michael Perlman, Carissa Abigail Kamm, Mark Misao Loera

Mechanical Engineering

This Final Design Review Report outlines the senior design project that began Winter Quarter of 2021 at California Polytechnic State University. Our team consists of three mechanical engineers and a general engineer, working together to design, build, and test a product for Alameda County Food Bank. The goal of the final product is to relieve volunteers and employees of tedious manual labor and increase efficiency during the removal of produce from large Gaylord containers. This document describes background research, the objectives of the project, chosen concept design, analysis and initial prototyping of said concept, the final design, and verification prototype …

Produce Sorting Aid, Annica Navarro, Jessie Boucher, Natalie Roberts, Teng Lee

Mechanical Engineering

This Final Design Review (FDR) document intends to define the details of the Produce Sorting Aid senior project–selected by four mechanical engineering students, working under the team name Team W24. The Alameda County Community Foodbank (ACCFB) sorts bulk produce into bags or boxes for distribution to people in need of food. However, the current process is not ergonomic, time efficient, or safe for the volunteers at the ACCFB. The scope of the senior project is to design a mechanism that is ergonomic, time efficient, and safe for the volunteers to lift heavy produce and distribute the produce into bags ready …

Mug For Veterans With Tremors, Eliot Daniel Briefer, Nicholas Michael Greco, Lucas Paul Martos-Repath, Tiernan Lif Kehoe

Mechanical Engineering

This Final Design Review Report outlines the senior design project completed by a team of mechanical engineering students attending California Polytechnic State University, San Luis Obispo for the McGuire Veterans Affairs Medical Center in Richmond, VA. The scope of the project was to design, build, and test a device for veterans with tremors that would allow them to enjoy their favorite drinks comfortably and easily, without worrying about spills. The final product must be lightweight, aesthetic, capable of handling various tremor types, and can be operated in multiple planes to allow the veterans full control over the device. This document …

Compact In-Rack Dielectric Immersion Cooling System, Salvador Landeros Jr, Joshua M. Hannaman, Marshall D. Reid

Mechanical Engineering

The Compact Dielectric Cooling team consisting of Josh Hannaman, Marshall Reid, and Salvador Landeros worked with Aria Technologies to create a thermal management system for data centers that can easily implement liquid cooling into current infrastructure for high density computing servers. The project was to design, build, and test a compact immersion cooling system for a senior project at California Polytechnic State University – San Luis Obispo. Immersion cooling is a liquid-cooling process that involves the immersion of electrical IT equipment and the removal of heat from the hot IT components using dielectric liquid. The goal was to build a …

Optimized Tip Cooling Using Am Process, Alberto H. Gamez, Lourdes Sarmiento Martinez, Andrew Van Bogelen

Mechanical Engineering

This Final Design Review (FDR) reports on the senior design project undertaken by our team of mechanical engineering seniors at California Polytechnic State University, San Luis Obispo. This project seeks to use the additive manufacturing process to improve the existing design of a Taurus 60 gas turbine injector tip. The current injector tip is owned by Solar Turbines, a designer and manufacturer of gas turbines for electric generation, propulsion, as well as natural resource transportation. The challenge at hand is to design a new injector tip that will be reliable for at least 60,000 hours and provide ease of replacement, …

Adjustable Head Tube Angle Headset, Glenn Petersen, Ben Harper, Josh Martin, Dylan Prins

Mechanical Engineering

This final design review report describes the design, manufacture, and test process of a bicycle headset capable of quickly and easily adjusting the effective head tube angle. The evolution of mountain bike geometry has forced bike designers to compromise between climbing and descending performance when choosing a head tube angle. A headset capable of quickly adjusting the effective head tube angle would allow riders to optimize their bike’s geometry for different stages of riding. This report details the research, idea generation, concept development and selection, design, manufacturing, and testing of our adjustable head tube angle headset.

Scitechatorium, Esther Hurst, Emma Salam, Nejad Harara, Felipe Dejesus

Mechanical Engineering

The Bellevue-Santa Fe Charter School SciTechatorium needs a new educational exhibit for its K-6th grade students. The exhibit must be safe, engaging, and exciting for the students to use, and will ideally introduce students to the topics of Science, Mathematics, Engineering, Art, and Technology (STEAM) concepts. The team has investigated some of the most popular science museums from around the nation, as well as several popular children’s educational toys. This research revealed a need for hands on, focused exhibits to provide an effective educational experience. Many of our favorite existing exhibits give students an opportunity to fail in a safe …

Unmanned Research Raft, Jacob Davis, Andrew Fleming, Luke Vickerman, Kahye Yu

Mechanical Engineering

This document serves as the Final Design Review report for the design team conducting the research raft design project for Lawrence Livermore National Lab (LLNL). Our team has taken on a project to design a new research raft for LLNL.

The current rafts are suitable, but engineers have modified and altered the rafts to add more features as needed. This has led to a raft that accomplishes mission goals, but still has room for streamlining. The battery technology has also improved. Our goals were to redesign the raft from the ground up, reducing the size and weight. We also wanted …

Tensile Testing Environmental Chamber – Structural, Michael Ingel, Erik Soldenwagner, Austin Marshall, Lauren Schirle

Mechanical Engineering

Environmental chambers for tensile testing machines are used to study how a multitude of materials behave in extreme temperatures. These chambers provide the necessary information to innovate cutting edge technology for materials in fields such as aerospace. These chambers are often heavy and expensive requiring a significant amount of time and money just in the installation process alone. This report will serve to outline and define the design and fabrication of an environmental chamber, conducted by a team of four senior mechanical engineering students at California Polytechnic State University, San Luis Obispo. The goals of the project include a low-weight …

Inverted Fluorescence Microscope, Matthew B. Pfeiffer, Spencer George Hann, Thomas James Eggenberger, Trevor Lee Blythe

Mechanical Engineering

Team F13 is composed of Trevor Blythe, Spencer Hann, Matthew Pfeiffer, and Thomas Eggenberger. We are all majoring in mechanical engineering and in our final year of study here at Cal Poly San Luis Obispo. This project is a continuation of a 2019-2020 senior project. The previous team designed and built a functioning inverted fluorescence microscope (IFM) from scratch. This device was created as a lab tool for undergraduate students to be able to perform experiments on microfluidic devices constructed in Cal Poly’s Microfabrication Laboratory. Although substantially functional, several design constraints had not yet been met. Our team has improved …

Prosthetic Foot Shell, Christopher Menke, Colton Arbuckle, Jacob Rodriguez

Mechanical Engineering

Prosthetic foot shells are designed to fit around lower limb prosthetics to be able to fit shoes and several types of footwear. They are currently designed in a way that they wear through very quickly if used in an active lifestyle. The current designs on the market are designed for geriatric use. The sponsor for this project Mr. Dana Cummings, would like for the team to produce a product that extends current foot shell’s life. This document explains includes the team’s research process, the design process, and the main functions of what the team designed for. It will also show …

Autonomous Tennis Ball Collector, Frances Erin Belcher, Michael Wai-Chun Yiu, Matthew David Hoffman, Alex Boyko Petrov, Robert E. Luttrell

Mechanical Engineering

Practicing tennis often involves hitting many tennis balls from one side of the court to the other without an opponent to hit the balls back. In training sessions like these, the task of collecting the balls is laborious when performed manually. The objective of this project is to develop a robotic tennis ball collector that can automatically collect the balls from one side of the court so that the player can rest rather than collect the balls manually. This document outlines the process of designing such a robot. Included in this report is background research, prototype, and concept modeling, along …

Med-Drop Pill Dispenser, Cole Pike, Taylor Morris, Christopher Bruni, Jose Gomez

Mechanical Engineering

Veterans’ Affairs home care nurses currently spend anywhere from thirty minutes to two hours filling out monthly prescriptions one pill at a time to veterans who are unable to leave their homes. The goal of this project was to create an easy-to-use device that could be left at a patient’s home that nurses could use to quickly and accurately dispense medication into the patient’s monthly pill box.

Blds Pressure Belt, Hailey Earnest, Sean Casteel, Benjamin Bons, Biren Rama

Mechanical Engineering

Dr. Westphal has a Boundary Layer Data System (BLDS) that is used to take pressure measurements on the surface of the aircraft. Our team has created a design and manufacturing method for producing the corresponding pressure belt that attaches to Dr. Westphal's system to obtain pressure data.

Interactive Physics Display: Air Cannon, Marina Smeltzer, Sydney Hosokawa, Jordan Nguyen, Jessica Ouyang

Mechanical Engineering

The San Luis Obispo Botanical Garden (SLOBG) is a non-profit organization that provides a place for visitors to connect with and explore nature. The sponsors from SLOBG sought an interactive physics display to be implemented in their children’s garden that will educate children and adult visitors about physics concepts in a welcoming and comfortable atmosphere. The research done showed that customers are looking for a “wow” factor with the display to surprise and engage them. Patents showed the design and build of interactive playground equipment. Government reports described the curriculum for the target audience and also outlined the safety precautions …

Sustainable Energy Storage, Jacob S. Grillo, Alyse C. Coonce, Jack R. Linchey, Nick P. Schnorr

Mechanical Engineering

This Final Design Review document covers the work we, students at California Polytechnic State University – San Luis Obispo, have performed in collaboration with Mr. Harish Bhutani and Dr. Mohammad Noori. The project’s intent is to create an energy storage system for off-grid and developing region applications using alternative technologies to lithium-ion battery storage. We plan to manufacture and assemble a scale model of the energy storage system to prove effectiveness and practicality. This system will store enough energy to power basic appliances and essential devices for a house or community. The chosen design direction will be a flywheel, as …

Transportable, Jung Sub Kim, Ellie Kitabjian, David Yang, Christopher Macias

Mechanical Engineering

This document is a Final Design Review (FDR) report for team TransporTable, a quartet of mechanical engineers at California Polytechnic State University, San Luis Obispo (Cal Poly). It chronicles our design and validation process through final design phase. Our project: to design and test concepts for a stackable table that streamlines group work. After conducting user/sponsor interviews and background research, we found that many products already exist, but none meet the specific blend of requirements set out by our sponsor. They include fast deploying/stowing times, durability, stiffness, and manufacturability. We ideated on the table’s functions, distilling many ideas into three …

Adapted Tricycle 2021, Carolyn Graven, Daniel Coleman, Sebin Cho, Farhan Khan

Mechanical Engineering

This document describes and outlines the details of the senior project completed by a team of four mechanical engineering students in their final year at California Polytechnic State University, San Luis Obispo. The team worked with Linda Wolff at California Children’s Services to reach their main goal: to create an exercise tricycle that can be used by Savannah. Savannah is a young adult, and she needs to be able to steer, brake, and power the tricycle using almost entirely her core muscles. Over the course of the project, the team worked to design and build a safe and functional tricycle …

Adjustable Height Pedestal Grinder Stand, Josef Zagorski, Zachary Wedel, Michael Sitar, Daniel Zevenbergen

Mechanical Engineering

Pedestal grinders are one of the most common machines found in machine shops today. The current industry standard for mounting a grinder is on a fixed single pillar, cast iron pedestal. A fixed pedestal allows for no vertical adjustment for shop users of different sizes and is a safety hazard. This report further defines this problem and proposes an iterative design process to meet the needs and wants of the customer. The adjustable-height pedestal grinder stand Senior Project team used this problem and design process to successfully complete the project within the allotted time. The first major deliverable and milestone …

Solar Decathlon Competition 2021, Khanh My Fleshman, Ashley H. Kim, Ian Grant Maclean, Erich Peter Fenczik Warnock, Carina Michaela Nani Monaco

Mechanical Engineering

This report is intended to outline all relevant background information, decisions, and design direction for our senior project at California Polytechnic State University, San Luis Obispo. We will be designing net-zero, affordable housing to compete in the attached housing division of the 2021 Department of Energy Solar Decathlon. With the increased urgency of climate change and focus on sustainability in construction, the importance of designing a net-zero structure is very apparent. Because there is a great need for affordable and sustainable housing in Watts, CA, we will be tailoring our design to meet this community’s needs. Details of the Solar …

Laminar Flow Face Shield, Julia Carlson, Peter Hunt, Jomil Aquipel, Becky Lu

Mechanical Engineering

The scope of this project was to design a personal protective equipment (PPE) that protects the wearer from SARS-CoV-2 without inhibiting communication and was comfortable to wear for long periods of time. SARS-CoV-2, commonly known as COVID-19, is a contagious respiratory virus that spreads through droplets produced when someone who is infected by the virus coughs, sneezes, or talks. These droplets may land on the mouths or noses of nearby people or may be inhaled in the lungs, infecting those who come in contact with the virus. The current guidelines to help slow the spread of COVID-19 are to wear …

3-Axis Reaction Wheel System For Cubesats, Alexandra Mae Lee, Daniel Leon, Christopher Pablo Casillas, Rose Mccarver

Mechanical Engineering

Reaction wheels are a common, but expensive, component used in CubeSats, that can accurately position a satellite using an imparted momentum (or impulse) from a rotating flywheel to adjust a satellite’s attitude. This document serves as the final design review and report for the 3-Axis Reaction Wheel Senior Design Project in the Mechanical Engineering Department of California Polytechnic State University, San Luis Obispo. The goal of this project is to produce a functional, low-cost 3-axis reaction wheel system based on previous research done by a master’s student at Cal Poly to be implemented in future CubeSats in the Cal Poly …

Cnc Feed Drive Control, Ryan J. Funchess, Caleb P. O'Gorman, Nick J. Desimone, Juan M. Majano, Samuel K. Wong

Mechanical Engineering

This document serves as the Final Design Report (FDR) for a senior project developed by our team: four senior Mechanical Engineering students and one computer engineering student at California Polytechnic State University, San Luis Obispo (Cal Poly). While the project was completed for, and sponsored by, Professor Simon Xing of Cal Poly, the remainder of the university’s controls professors will be indirectly benefited from this project. Our goal was to design and implement a functional CNC Feed Drive to be used for educational demonstrations and data collection. This document discusses our early product research and benchmark goals, which established constraints …

Adaptive Vehicle Control, Brian L. Finger, Maria Vargas, Jacob T. Larson, Christopher J. Villa

Mechanical Engineering

This report presents the final design for our device made for Mrs. Laura Jagels. Mrs. Jagels, who has an above the knee amputation, needed a device that would allow her to operate a manual car in a safe and reliable way that still gives her the traditional driving experience. This report takes into consideration the shortcomings of current market devices that enable amputees to operate vehicles. From this research and through interviews with Mrs. Jagels, we were able to decide on our device specifications, giving us a basis to objectively evaluate designs. Ideation and concept prototype building was performed for …

Sustainable Tiny Home, Abigail Jessica Jones, Vince John Bugni, Sean Robert Paddy, Cameron Michael Gross

Mechanical Engineering

As housing prices and environmental concerns continue to increase, many people are looking for cheaper and more sustainable ways to live. A solution to both problems is building homes with smaller footprints which incorporate renewable energy and water-reclamation systems. In addition, adding a roof pond system to the dwelling also reduces the need for heating and cooling. The roof pond system uses a water bladder on the roof which acts as a heat-sink and moveable insulation panels. This document contains the process for our final design along with results from testing the verification prototype.

Cal Poly Wind Power: Wind Turbine Prototype, Sophie A. Spencer, Maggie Nevrly, Michael Reyna, Loi Q. Nguyen

Mechanical Engineering

The Cal Poly Wind Power (CPWP) club is competing in the Collegiate Wind Competition (CWC) hosted by the National Renewable Energy Laboratory (NREL). The CWC is hosted annually by NREL to increase the number of skilled workers prepared to work in the wind energy industry. Our senior project team is one of several design teams contributing to the CPWP prototype turbine design including the pitching mechanism, blade design, generator, and shaft. The scope of this project is to design the yaw mechanism, tower, and nacelle. The goal is to create components that function well with other planned components and are …

Controlling Locomotion Of A Robotic Leg, Tai K. Mitchell, Connor Bush, Patrick Ward, Ben Spin

Mechanical Engineering

Dr. Xing and Professor Refvem are working to research and develop a quadruped robot that is capable of basic movements including walking, running, and jumping. As senior project group F-11, we are joining a team of engineers to assist in the development of the quadruped. Our team was tasked with creating a mathematical model, designing a control method, and implementing that control method for the quadruped's legs in Simulink. This will allow both current and future students to understand the response of the system and provide a building point for future researchers to create working quadrupedal robots. This report documents …