Injector Development Engineer

Job description

**Injector Development Engineer** Location: Mumbai | Employment Type: Full Time **About Manastu** **Manastu Space** is an Indian space-tech company founded by IIT Bombay alumni **Tushar Jadhav** and **Ashtesh Kumar** . It develops hydrogen peroxide-based green propulsion systems for satellites and launch vehicles that enable safer maneuvering that is cost-effective and helps in debris collision avoidance with sustainable end-of-life deorbiting, thus address the growing needs and challenges of an increasingly crowded space environment. Our work sits at the intersection of advanced engineering, applied research and mission-critical systems, requiring deep technical capability and long-term thinking.. **Website:** https://www.manastuspace.com **LinkedIn:** https://www.linkedin.com/company/manastu-space/ **Email:** careers@manastuspace.com **The Role** You will own the detailed design and development of assigned injector hardware, from element geometry and manifold design through to spray pattern, atomisation, and mixing behaviour. This role holds the highest-priority coordination interface in the Thruster Development Team, working daily with Combustion on the coupled injection and stability problem. It matters because the injector governs how propellant is prepared for combustion, and therefore drives efficiency and stability. **What You’ll Work On** These are the areas you will own because they shape how propellant is delivered, atomised, and mixed for combustion: - Injector Design & Development - Spray Pattern Optimisation - Atomisation & Mixing Analysis - Microfluidic Flows - Injector-Combustion Interface Definition - Injector Test Plan Definition & Data Interpretation - DFM Understanding for Injector Components **Key Responsibilities** - Own detailed design and development of assigned injector hardware, element geometry, manifold design, orifice sizing - Own spray pattern optimisation for assigned injector configuration, droplet sizing, spray cone angle, penetration depth - Own atomisation and mixing analysis for assigned injector, analytical and CFD-based characterisation of spray behaviour - Own injector test plan definition, cold flow test objectives, spray characterisation instrumentation, hot-fire injector performance criteria - Accountable for injector-combustion interface definition, inlet conditions, pressure drop budget, thermal environment at injector face - Accountable for ensuring injector designs reflect DFM considerations, orifice tolerances, manifold manufacturability, surface finish requirements - Coordinate daily with Combustion sub-team on injection pattern, mixing efficiency, and combustion stability coupling, highest-priority coordination interface in the Thruster Development Team - Coordinate with Thruster Structures & Thermal sub-team on injector structural loads, thermal environment, and material selection - Coordinate with Fluidic Components team on upstream feed conditions, pressure, temperature, flow rate, delivered to the injector inlet **Required Qualifications** - Degree in aerospace, mechanical, or chemical engineering - 2–6 years of experience in injector design, spray characterisation, or atomisation analysis - Proficiency in CFD for multiphase and spray flows, Ansys Fluent, OpenFOAM, or equivalent, with demonstrated capability in spray modelling - Deep understanding of atomisation mechanisms, pressure-swirl, impinging jet, coaxial, and shear-assisted atomisation **Preferred Qualifications** - Master's or PhD in Mechanical Engineering, Aerospace Engineering and relevant education background preferred - Experience with cold flow spray characterisation, Phase Doppler Anemometry (PDA), shadowgraph, or equivalent optical diagnostics - Familiarity with microfluidic flow behaviour, flow at small length scales, surface tension effects, viscosity-dominated regimes - Experience with injector manifold design, pressure drop analysis, flow distribution uniformity, structural sizing - Background in green monopropellant injector design, inlet conditioning, thermal environment at injector face, compatibility considerations - Familiarity with additive manufacturing for injector components, fine-feature resolution, internal channel surface finish, orifice tolerances achievable via SLM/DMLS - Experience with hot-fire test data reduction for injector performance, combustion efficiency, c\\* efficiency, injector pressure drop characterisation