Rainmaker Technology Corporation
Research Engineer, Aerosol & Liquid Dispersion Systems
El Segundo, CA
Sponsorship not specifiedDetected 23 hours ago
PythonSolidWorksFusion 360ANSYSCFDMechanical DesignSensorsCOMSOLResearchRemote Sensing
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Lottery odds40
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About the role
- We are seeking a highly hands-on Mechanical/Aerospace Research Engineer with deep expertise in aerosol science, multiphase flow, and compressible fluid dynamics.
- In this role, you will bridge the gap between cloud physics and high-performance fluid systems, designing hardware that utilizes high-velocity gas dynamics to both fragment nanoparticle agglomerates and atomize liquid precursors into submicron aerosols.
- You will tackle complex mechanical challenges to efficiently disperse cohesive dry powders and ultra-fine droplets, managing complex mass-transfer and particle/droplet momentum while strictly adhering to aerospace SWaP (Size, Weight, and Power) constraints.
Responsibilities
- High-Velocity Nozzle Design: Design, machine, and test custom Convergent-Divergent (Laval) nozzles to achieve controlled gas expansion for both liquid filament breakup and high-shear solid deagglomeration.
- Multiphase Dispersion: Develop and optimize systems for the simultaneous or alternating dispersion of complex liquid aerosols and dry-powder "seeds" using high-velocity gas streams.
- Hardware Prototyping: Build mechanical dry-powder micro-feeders, liquid delivery architectures, and aerosol generators from the ground up, utilizing high-pressure gas supply systems.
- High-Velocity Nozzle Design:
- Design, machine, and test custom Convergent-Divergent (Laval) nozzles to achieve controlled gas expansion for both liquid filament breakup and high-shear solid deagglomeration.
- Develop and optimize systems for the simultaneous or alternating dispersion of complex liquid aerosols and dry-powder "seeds" using high-velocity gas streams.
- Build mechanical dry-powder micro-feeders, liquid delivery architectures, and aerosol generators from the ground up, utilizing high-pressure gas supply systems.
Requirements
- Approximately 5 years of hands-on experience in mechanical engineering, specifically focused on fluid dynamics, multiphase flow (gas-liquid/gas-solid), or atomization.
- Proven experience in Mach number optimization, internal nozzle flow, and the physics of choked flow conditions.
- Strong CAD proficiency (SolidWorks, Fusion 360, etc.) and hands-on hardware prototyping experience, including CNC machining and general fabrication.
- High-Speed Flow Characterization: Experience with the analysis of high-velocity particulate exhaust, liquid-jet disintegration, or supersonic multiphase flows.
- Computational Modeling: Experience with CFD (e.g., ANSYS Fluent, COMSOL) to model droplet/particle trajectories, velocity lag, and shock-wave interactions in high-speed plumes.
- Develop the pneumatic and fluidic routing systems (valves, regulators, and micro-channels) required to maintain specific pressure ratios necessary for choked flow and stable supersonic jets.
Nice to have
- Basic proficiency in electronics prototyping (Arduino, Raspberry Pi) and software/scripting (Python) for hardware control and data acquisition.
Skills
- Rainmaker is pioneering a modern cloud seeding system to solve water scarcity and inclement weather problems.
Company info
- ABOUT THE ROLE We are seeking a highly hands-on Mechanical/Aerospace Research Engineer with deep expertise in aerosol science, multiphase flow, and compressible fluid dynamics.
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