Rocket Engine Thermal Analysis Engineer

1w1 week ago

POLARIS Raumflugzeuge GmbH

Bremen, DE · Full-time · €60,000 – €90,000

About this role

POLARIS Raumflugzeuge GmbH develops innovative transportation systems that redefine access to space for payloads and passengers. With 70 dedicated colleagues working at two locations, we are expanding our team to make our vision reality. We seek a Rocket Engine Thermal Analysis Engineer to join us.

You will perform thermal design and analysis of rocket engines at system, subsystem, and component levels. Set up 0D/1D simulations for steady state and transient conditions, and determine thermal loads from hot gas in the combustion chamber into the injector and chamber wall. Design and assess cooling concepts such as regenerative cooling, film cooling, and radiative heat transfer.

Analyze heat transfer in hot gas flows, combustion chambers, nozzles, and cooling structures. Define thermal boundary conditions, load cases, and thermal margins while supporting engine design by identifying thermal risks and proposing optimizations. Collaborate closely with design, systems, CFD, test, and manufacturing teams.

Correlate analytical results with test data to derive design updates and document models, assumptions, results, and decisions. Join us in shaping the future of space transportation and making a positive impact through proactive contributions in a motivated team environment.

Requirements

Degree in Space Engineering, Aerospace Engineering (M.Sc.) or similar
Minimum of 2 years of full-time experience
Strong background in thermal conditions inside of rocket engines
Profound understanding of fluid dynamics, thermodynamics, heat conduction, heat transfer and radiation
Profound understanding of cooling channel design
Proactive thinking, high level of motivation, flexibility, and team-working skills
Proficiency in both German and English

Responsibilities

Perform thermal design and analysis of rocket engines at system, subsystem, and component level
Setup 0D/1D simulations for steady state and transient conditions
Determine thermal loads from the hot gas in the combustion chamber into the injector and the chamber wall
Design and assess cooling concepts such as regenerative cooling, film cooling, and radiative heat transfer
Analyze heat transfer in hot gas flows, combustion chambers, nozzles, and cooling structures
Define thermal boundary conditions, load cases, and thermal margins
Support engine design by identifying thermal risks and proposing optimization
Correlate analytical results with test data and derive design updates