Freshman · Santa Clara University · Class of 2029

JulianTrotzenberg

Mechanical engineering student building real hardware — from custom wind tunnels and aerodynamics experiments to 3D-printed flight systems. Targeting roles in aerospace & propulsion and electric vehicle development.

View Work ↓Get in Touch
Scroll
Fusion 360·Aerodynamics·3D Printing·CAD / FEA·Avionics Integration·Wind Tunnel Testing·Product Design·NACA Airfoils·Rapid Prototyping·Data Analysis·L/D Optimization·Gas Engine Rebuild·Flight Systems·Fusion 360·Aerodynamics·3D Printing·CAD / FEA·Avionics Integration·Wind Tunnel Testing·Product Design·NACA Airfoils·Rapid Prototyping·Data Analysis·L/D Optimization·Gas Engine Rebuild·Flight Systems·
Selected Work

Engineering Projects

Full wind tunnel setup
Building the wind tunnel
Straw laminar flow inlet
7 NACA 0015 airfoils
1 / 4
01 / FEATURED
Aerodynamics Research

Subsonic Wing Sweep Angle Optimization

1,000+Data Points
3Wind Speeds
7Airfoils
View Report →

Designed and built a custom wind tunnel from scratch to experimentally determine the optimal wing sweep angle for maximizing lift-to-drag ratio — corroborating variable-sweep logic used in the F-14 Tomcat.

  • Designed 7 NACA 0015 airfoils (0°–60° sweep) in Fusion 360, 3D printed to 0.2mm accuracy on Bambu X1 Carbon
  • Engineered 2 wind tunnel iterations with laminar flow straw filter, pulley-based drag measurement, and rail-mounted force isolation cart
  • Drag decreases significantly past 30° sweep; lift follows a cos² relationship — supporting variable-sweep aircraft design
  • Proposed CFD simulation as validated next step to eliminate experimental uncertainty
PenSafe retention device
Device held showing mount
Exploded CAD diagram
Design iteration sheet
1 / 4
02 / FEATURED
Product Design & Prototyping

PenSafe — E-Waste Reduction

€0.86Unit Cost
10NPull Test ✓
20Drop Tests ✓
View Report →

Identified a real problem in a school IT department and delivered a full engineering design cycle — from user interviews through 4+ prototype iterations to a finished, tested product.

  • Interviewed school IT director who reported 8 lost/damaged peripherals per year (~€120 each); defined 16-point design specification covering child safety, ergonomics, and material toxicity
  • Designed 6 competing concepts in Fusion 360 and selected optimal design through scoring and client feedback
  • Prototyped in cardboard then PLA — passed 10N magnetic pull test and survived 20 drops from 1.5m
  • Final product: €0.86 in filament, 26.72g, non-toxic PLA, no sharp edges, no choking hazards
Completed Eclipson Wolf
Aircraft assembly
Fuselage assembly
Wing section
Carbon prop and motor
1 / 5
03
Avionics / Systems

RC Fixed-Wing Aircraft Build — Eclipson G1 Wolf

Ongoing build of a 3D-printed fixed-wing RC aircraft. Printing all structural components on a Bambu X1 Carbon, integrating a full avionics stack (brushless motor, ESC, servos, FlySky receiver, LiPo).

Bambu X1 Carbon printedFull avionics integrationCarbon-fiber propFEA structural analysisFlySky FS-iA10B
SpaceX Raptor engine model
Raptor model held
1 / 2
05
3D Printing / Modeling

SpaceX Raptor Engine — 3D Printed Scale Model

Sourced and printed a detailed multi-part scale model of the SpaceX Raptor engine. Multi-material print in black and white PLA capturing turbopumps, plumbing, and bell geometry. Driven by interest in full-flow staged combustion propulsion.

Multi-material PLAFull-flow cycle reference
Cooking sugar fuel mixture
Potassium nitrate oxidizer
Fuel ingredients setup
1 / 3
07
Propulsion / Chemistry

Sugar Fuel — A Bit of Dangerous Fun

Mixed and tested a potassium nitrate / sugar caramel propellant compound and tested the fuel in my backyard. A first experiment in oxidizer-fuel ratios and burn behavior.

KNO₃ / sugar mixtureCustom nozzle casingIgnition testedBurn rate observed
Capabilities

Skills & Tools

// CAD & Simulation
  • Fusion 360 (parametric modeling)
  • FEA structural analysis
  • CFD (familiarization)
  • NACA airfoil design
  • Assembly & tolerance design
// Manufacturing
  • FDM 3D printing (Bambu X1 Carbon)
  • Multi-material PLA printing
  • Gas engine disassembly & rebuild
  • Mechanical assembly
  • Rapid prototyping
// Engineering Practice
  • Experimental design & testing
  • Data collection & analysis (1K+ pts)
  • Avionics integration (ESC / servo / Rx)
  • Design spec scoring (16-point matrix)
  • Technical documentation
Background

About Me

I'm a freshman mechanical engineering student at Santa Clara University. I build things.

I'm drawn to engineering problems where physics meets hardware — where you can't just simulate your way to an answer and have to build, test, and iterate. That instinct led me to build a wind tunnel from scratch, fly a 3D-printed aircraft, and tear down a 100cc engine.

I'm looking for summer 2026 internships in aerospace or EV — anywhere the hardware is hard and the problems are unsolved.

Let's build
something fast.