Propulsion CFD & Thermal Engineer — Fluid Systems

Portalsystems; Bothell (WA); On-site; USD 110,000 - 170,000; Full time

Job summary

Portal Space Systems in Bothell, WA is seeking a Fluid/Thermal-focused Propulsion Engineer to advance thruster, feed system, and tank development. You will perform high-fidelity CFD and thermal analyses to inform design trades from concept to flight hardware.

You will build fluid network models for component sizing, support test campaigns, and collaborate with propulsion and analysis teams to reduce risk and accelerate hardware decisions.

Qualifications

• Bachelor’s or Master’s degree in Mechanical or Aerospace Engineering or related field.
• Experience developing complex CFD models and reduced order fluid/thermal hand calcs.
• Experience communicating analysis assumptions, results, and design implications.

Responsibilities

• Develop high fidelity CFD models to support HEX thruster and propellant tank development.
• Model complex fluid behavior, including multiphase flow, phase change, conjugate heat transfer, and tank slosh.
• Build fluid network models of feed systems for component sizing and controls development.
• Complete first order hand calcs for simple problems and quick answers.
• Support propulsion test campaigns with pre-test predictions, instrumentation planning, and post-test data reduction and model correlation.
• Predict transient temperature distributions internal to the HEX Thruster and design thermal control approaches.

Skills

Fluid mechanics

Thermodynamics

Heat transfer

CFD modeling

Technical communication

Education

Bachelor's or Master’s in Mechanical or Aerospace Engineering

Tools

NX

STAR-CCM+

GFSSP

Linux

Job description

Portal Space Systems in Bothell, WA is seeking a Fluid/Thermal-focused Propulsion Engineer to advance thruster, feed system, and tank development. You will perform high-fidelity CFD and thermal analyses to inform design trades from concept to flight hardware.

You will build fluid network models for component sizing, support test campaigns, and collaborate with propulsion and analysis teams to reduce risk and accelerate hardware decisions.