Senior Rotordynamics Engineer

About the role

Astro Mechanica is a vertically integrated aerospace company building a faster, more connected future. Our mission is to democratize high-speed flight by making supersonic travel flexible, accessible, and sustainable. We believe that rapid, on-demand, point-to-point global mobility will become the new standard for moving people and goods across the planet. To achieve this, we are integrating our advanced airframe and engine technologies-which include Duality™, our proprietary dual-use propulsion system-with a new flight operations model to make supersonic transport as efficient and economical as commercial air travel is today. In the near term, we are developing adaptable, high-speed systems to close aircraft performance gaps for the United States government. We're a team of passionate engineers dedicated to advancing aerospace. We're generalists with specialist depth, united by a flat structure and a shared obsession with building things that work well. We move fast, stay pragmatic, and let engineering excellence speak louder than hierarchy.

Responsibilities

• Lead rotordynamic analysis of turbomachinery systems, including critical speed prediction, stability margins, imbalance response, torsional analysis, modal analysis, and Campbell diagram development
• Bearing selection, preload definition, stiffness and damping trade studies, thermal management and lubrication system
• Define and execute test campaigns instrumented specifically for rotordynamic validation
• Develop and iterate computational models (StarCCM+, AxSTREAM) with rotordynamic constraints in mind
• Utilize propulsion cycle models (GasTurb, NPSS) to assess how compressor maps and mechanical behavior interact under dynamic loading conditions
• Define GD&T for rotating assemblies through tolerance analysis, considering the effects on rotor balance, seal clearances, and dynamic behavior
• Partner with manufacturing to ensure production of high-precision rotating components with balance grades, runout tolerances, and assembly sequence in mind

Requirements

• 5+ years in turbomachinery design with demonstrated rotordynamic analysis and mechanical packaging ownership on real hardware
• Hands-on experience with rotordynamic modelling tools (DyRoBes or equivalent)
• Experience with blade and compressor geometry development using CFD, streamline curvature, and 1D meanline methods (StarCCM+, AxStream)
• Experience with test instrumentation and data reduction specifically for mechanical validation (vibration, whirl, and rotor response)
• Experience with propulsion cycle tools (GasTurb, NPSS) and how compressor mechanical behavior couples to cycle performance
• Proficient in CAD for rotating assemblies (Siemens NX) and multiphysics analysis
• Experience with scripting for analysis automation and post-processing (Python, MATLAB)
• Effective communicator capable of leading cross-functional design reviews and contributing to system architecture discussions

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