IAN GILSINGER
Night hot fire of a gaseous hydrogen/oxygen rocket engine on a test stand, with a measured force-versus-time plot inset
FIG 0 · Hot fire of my GH2/GOX engine, 3 lbf. Inset: measured force vs. time.
Engineering Portfolio · Mechanical Engineering

IANGILSINGER

I am a mechanical engineering student at the Rose-Hulman Institute of Technology with internship experience at SpaceX and L3Harris Technologies. The work here shares a theme: I like to design things, build them, and test them, whether that is an engine on a test stand, a lander taking shape in CAD, or software that speeds up engineering work.

Education
Rose-Hulman Institute of Technology, B.S. Mechanical Engineering, expected May 2028
SpaceX
Mechanical Engineering Intern, LC-39A, 2025
L3Harris Technologies
Mechanical Engineering Intern, 2025 and 2026
Primary Engineering Inc.
Mechanical Engineering Intern, 2023–2024
Project01
Personal project

Hydrogen/Oxygen Rocket Engine

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I designed, built, and successfully hot-fired a pressure-fed, gaseous hydrogen/oxygen rocket engine producing 3 lbf of thrust. The engine is built around an additively manufactured thrust chamber assembly, with propellants delivered from regulated gas supplies and thrust measured live on the stand. The firing at the top of this page is one of those tests.

CAD model of the rocket engine
FIG 1.1CAD model of the engine: two propellant inlets feeding the injectors, chamber, and converging-diverging nozzle.
Propellants
Gaseous hydrogen / gaseous oxygen
Cycle
Pressure-fed
Thrust
3 lbf, measured on the stand
Fabrication
Additively manufactured thrust chamber assembly, printed by an outside vendor
Scope
Design, test stand, instrumentation, and test conduct
Watch the full hot fire
Project02
Software · Personal project

Engineering Agent

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I am developing Engineering Agent, a Python program that takes user prompts for CAD models and uses both Claude and local modeling applications to produce CAD models with minimal user input. The program checks and corrects the work of the AI and provides the user the means to course-correct the AI easily if it misinterprets the user prompt. I am planning to extend the program so it can run simulations on the parts it produces.

The Engineering Agent user interface with a dimensioned drawing and a completed job
FIG 2.1The user interface of Engineering Agent, showing its dimensioned interpretation of a prompt and a completed job.
An aluminium mounting plate part open in Autodesk Inventor
FIG 2.2A part model produced by Engineering Agent.
Prompt to partThe plate in Fig 2.2 came from the prompt shown in Fig 2.1 and was built in Autodesk Inventor.
Project03
Engineering leadership

Lander Design Team & Rocketry Leadership

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I lead the lander design team on Rose-Hulman’s rocket team and serve as the team’s treasurer. The lander is very early in its development, and the CAD below is an early concept.

Before transferring to Rose-Hulman, I founded and led the rocket team at Purdue University Fort Wayne, taking a liquid-fuel propulsion project from scratch to a machined nozzle, shown below.

Early lander configuration CAD
FIG 3.1Early lander configuration CAD (design in progress): propellant and pressurant tanks around a central truss, feed plumbing with valves, and landing struts.
Machined converging-diverging nozzle
FIG 3.2The converging-diverging nozzle I had machined for the PFW team’s engine.
CAD of a pintle injector
FIG 3.3CAD of the pintle injector I designed for the PFW engine.
Project04
Personal project

Sound-Suppression Vent

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I designed and built a sound-suppressing vent: a flow path lined with slotted inserts intended to hold sound-absorbing foam. The CFD velocity field below was part of the design work, checking how the flow distributes through the vent and around the inserts. In testing, the vent managed only a barely noticeable drop in noise. The concept ultimately proved impractical, but designing, building, and testing it taught me a lot about acoustics, fluid simulation, and physical testing.

CFD velocity-magnitude field through the vent cross-section
FIG 4.1CFD velocity-magnitude field through the vent cross-section: flow entering at the base, splitting around the foam insert pockets.

Get in touch

EmailIan@gilsinger.net
LinkedInlinkedin.com/in/ian-gilsinger
Based inFort Wayne, IN
IAN GILSINGER · ENGINEERING PORTFOLIO4 SHEETS