Stefan Humer Email & Phone Number

Chula Vista, CA

Project Engineer for Tech-Compliance.Qualification and Certification of composite panels for lightning strike and fire test

San Diego, CA

• Combustor Design Lead for small propulsion engine and APU.
• Managed program from design phase to production, meeting all design criteria.
• Proposed design for improved combustor liner and fuel system on APU. Both programs were outside standard design specifications and met customer requirements.
• Tracked build of material, interacted with supplier, checked and approved parts and assembly drawings and performed basic FAI inspections.
• Designed test setup, reviewed drawings and performed full circle stack up analysis.Test Engineer for Development of Combustor Liner
• Established test procedures including test setup, test conditions, and instrumentation. Analyzed test data and summarized results in report supplied to customer and presented to management/customer.

San Diego

• In charge of Embraer -145, -135, and Airbus A320 APU engines for repair evaluation.
• Evaluated incoming APUs from airline customer for cause of failure including borescope inspection
• Recommended tear down or As Received Test for further investigation of engine.
• Worked closely together with material lab to investigate failure modes
• Conducted root cause analysis investigation on failed parts and provided design solutions.
• Wrote and supplied customer with cause of failure report and failed parts listing.

• Managed combustion laboratory and supervised up to 8 graduate and students during their research
• Conducted and coordinated safety training for new students in laboratory
• Developed a new surrogate of the commercial Jet fuels (Jet A and JP-8) to simplify chemical kinetic mechanism (CKM) for numerical calculations
• Designed and constructed entire experimental apparatus (counterflow burner and liquid fuel vaporizer) incorporating innovative ideas to overcome limitations of the experimental setup
• Presented technical papers at several national and international conferences and symposia (SAE Meeting Cape Town, South Africa; Combustion Symposium, Sapporo, Japan, and Heidelberg, Germany)
• Conducted experiments on laminar flames in premixed and non-premixed condition in a counterflow set up varying the fuel mass fraction, equivalence ratio, flow rate, and temperature

Department Of Mechanical Engineering

• Responsible for following classes, “Chemical Engineering Thermodynamics – course: MAE 110A” and “Heat Transfer – course: MAE 101C”
• Setting up and maintaining website for above courses

Stuttgart Area, Germany

• Conducting master's thesis at the research center in Stuttgart, Germany on autoignition.
• Calibrated ignition point on 1-cylinder research engine via internal gas recirculation with fully variable electromagnetic valves
• Measured successfully the amount of chemical species using chemiluminescence of the combustion and pressure inside the chamber in an homogeneous charged compression ignition (HCCI) environment depending on exhaust gas.
• Improved LabVIEW program used for data acquisition and improved the existing experimental setup