2. 2/8
Table of Contents
Personal Projects
CNC Mill 3
Electric Tricycle 4
Chainsaw Motor Driven Bicycle 5
Carbon Fiber Skateboard 6
Spot Welder 7
Academic Projects
Foldable Surfboard Fin 8
Northrop Grumman: CubeSat Deployable Solar Array 9
3. 3/8
CNC Mill
The CNC Mill project was largely motivated by my desire to have this as a
tool. This project required meticulous attention to detail becauseso many of
the dimensions for hole locations had to be accurate to ensure machine
accuracy. This is by far my favorite project as represents my interests and
motivations well. The 3-axis mill achieves translational motion using stepper
motors, lead screws, and linear bearings. The spindle is a DC motor
controlled with PWM. The stepper motors are controlled using and Arduino
motherboard and a GRBL daughterboard. This allows for the interpretation
of G-codeand the amplification strong enough to drive the stepper motors.
4. 4/8
Electric Tricycle
The Electric Tricycle project includes a 24V DC motor controlled by a high
amperage momentary switch. The tricycle has a belt driven one wheel drive
transmission. I used this to get groceries and ride to class. The tricycle has 2
12V Lead Acid Batteries in series.
5. 5/8
Chainsaw MotorDriven Bicycle
The Chainsaw Motor Driven Bicycle project was initially intended to
replace the need for my normal bicycle, but I was quickly told not to ride
this loud 2 stroke motorized bike on campus. The transmission is direct drive
off of the rear tire using a peg that is textured to grip the tire. This was the
most simplistic way to achieve the very small gear ratio that I needed.
6. 6/8
Carbon Fiber Skateboard
The CompositeSkateboard project was driven by my desire to make a
lighter skateboard. I felt that wood skateboards were not optimizing strength
to weight. I was able to decrease weight of the skateboard by about 30%
while maintaining a comparable resistance to fracture under similar loading
conditions. The difficult aspectof a wooden skateboard to compete with was
its toughness. Delamination of my composite skateboards occurred under
loads tangent with fiber directions.
7. 7/8
Spot Welder
The SpotWelder project was motivated by a need for a spotwelder. I was
making a steel enclosure with sheet metal and I thought that this would be a
handy tool to do said job. The welder is very simple. It is based off of a
microwave over transformer where I removed the secondarywinding and
replaced it with my own secondary winding which is 2 loops of 1 gauge
copperwire in order to achieve metal melting amperage.
8. 8/8
Foldable Surfboard Fin (TeamProject)
The Foldable Fin Project was a 1-quarter (3 month) project in which each
group was expected to come up with an innovative solution to a problem.
Our group decided to address the difficulties associated with transporting
and storing surfboards due to the awkward geometry of the fin.
Video Link: https://www.youtube.com/watch?v=Dgvor-Iz1Gw
9. 9/8
Northrop Grumman: CubeSat Deployable Solar Array (In Progress)
For this project I have been tasked to design a deployable solar array for a
small satellite that will be capable of deploying and solar tracking. This
project includes unique design solutions to thermal, mass, mechanical,
vibrational, structural, and atmospheric problems. In this project I have
designed the mechanisms and functionality of the mechanism, analyzed the
design against strict design requirements, and I am now machining,
assembling, and testing the Satellite Solar Array. This project has bee the
most thorough engineering project I have been involved with.
