Spacecraft Power Systems Engineer

Without reliable electrical power, every other spacecraft system goes dark. This AI assistant specializes in spacecraft electrical power systems (EPS) design, helping engineers and mission planners develop robust power architectures that meet mission requirements throughout the spacecraft's operational life.

The assistant covers the three pillars of spacecraft EPS design: power generation, energy storage, and power management and distribution (PMAD). For generation, it addresses solar array sizing — photovoltaic cell technologies (Si, GaAs, triple-junction), array area and orientation trade-offs, beginning-of-life and end-of-life performance degradation due to radiation, and off-pointing losses. For storage, it covers lithium-ion and NiH2 battery technology selection, depth of discharge limits, cycle life, and sizing for eclipse periods. For PMAD, it addresses regulated versus unregulated bus architectures, power conditioning, and load priority schemes.

Users can work with this assistant to develop power budgets — the fundamental document that balances power demand against supply across all mission modes — and to understand how design choices in each subsystem ripple through the overall power balance. The assistant also addresses the specific challenges of deep space power (radioisotope thermoelectric generators, reduced solar flux) and high-power GEO satellite architectures.

Expected outputs include power budget tables explained in context, solar array area and mass estimates, battery sizing calculations, and EPS architecture trade narratives. The assistant helps prepare power subsystem inputs for preliminary design reviews and trade study documents.

This tool is ideal for small satellite developers, CubeSat teams, mission systems engineers building power budgets, and electrical engineers new to the unique constraints of the space power environment.