Hi, I’m
Yongquan Ji.
I enjoy designing, building,
and testing mechanical systems.
A Rice sophomore exploring aerospace, transportation, and product development through mechanical design, prototyping, and hands-on testing.

My engineering
interests
Engineering Design Minor
Brown College · Class of 2029
What excites me most is working with a team to turn an idea into something tangible—through brainstorming, design, prototyping, and testing.
My interest in engineering began with rocketry and propulsion, driven by the possibility of expanding human exploration through rockets and space vehicles. As Fluid Systems Lead for Rice Eclipse, I lead the development and testing of fluid systems for liquid rocket engines. I also helped design and build a portable testing rig for an active flight stabilization system, combining mechanical design, actuator controls, and electronics integration to test flight-control hardware on the ground.
Alongside aerospace, I’ve discovered how much I enjoy applying engineering to everyday needs. During my SEED internship at Rice’s Oshman Engineering Design Kitchen, I worked on a smart pill-bottle insert to track medication dispensing and converted a 3D printer into an automated water sampler. These projects broadened my interest in product development and gave me more opportunities to connect mechanical design with programming, electronics, and hands-on testing.
Whether I’m working on a rocket system, a healthcare device, or an environmental monitoring tool, I enjoy learning unfamiliar concepts, solving problems with teammates, and refining a design based on what testing reveals. I’m always eager to learn something new, take on engineering challenges, and collaborate with people who enjoy bringing ideas to life.
Engineering projects
Design work from my time at Rice.
RICE ECLIPSE · TWO-SEMESTER DESIGN PROJECTActive Flight
Stabilization Test Rig
A portable rig for testing rocket hardware under wind loading, with controlled pitch and yaw and a free or locked roll axis.
Read about the project
RICE OEDK · SEED 2026Bayou Water Sampler
A modified 3D printer that collects water samples on a schedule, with cellular controls and space for 44 vials.
My contributionsPrinter conversion, programming, electrical systems, remote-control hardware, testing, and system integration.
Read about the project
RICE OEDK · SEED 2026Padgett Insert
A smart medication-bottle insert that separates pills and records dispensing, with patient and clinician interface concepts.
My contributionsInsert structural design, sensor testing, calibration, tuning, and material testing.
Read about the project
RICE ECLIPSE · WORK IN PROGRESSLiquid Rocket Engine
Injector Test Bed
A cold-flow test bed for visualizing injector spray patterns, currently in design and structural analysis.
My contributionsCAD design, structural FEA, and load-case comparisons.
Read about the projectSkills & tools
Design & analysis
Mechanical design · CAD · Finite element analysis · Engineering calculations · Control system modeling
Hardware & prototyping
Rapid prototyping · Fabrication & assembly · Circuit design · Arduino & actuator integration · Fluid & propulsion systems
Programming & testing
MATLAB · Python · Java · C++ · Hardware automation · Calibration · Experimental validation · Technical documentation
Rice Eclipse Fluid Systems Lead
Rice Racing Powertrain Team Member
Tripoli Rocketry Association
Level 1 High-Power Rocketry Certification
Problem-solving · Teamwork
Technical leadership · Communication