I went straight to user needs and completely forgot to address the physical constraints for like two full minutes.
Start by clarifying the goal and constraints of the coffee machine on the ISS, such as crew needs, safety, and resource limitations. Then, structure your answer around a user-centered design process, highlighting trade-offs and prioritization. Conclude with a phased implementation plan and success metrics.
Pro tip: Acknowledge the unique microgravity environment and its impact on fluid dynamics, then propose a solution that leverages existing ISS systems (e.g., water recovery) to minimize new resource requirements.
Ask questions to understand the purpose (morale, caffeine delivery) and constraints (volume, mass, power, safety, microgravity, crew time).
Define the primary users (astronauts) and their needs: taste, convenience, reliability, and psychological comfort. Consider scenarios like daily routine or special occasions.
Generate ideas (e.g., single-serve pods, liquid concentrates, 3D-printed coffee) and evaluate against constraints using a trade-off matrix (e.g., mass vs. quality).
Outline a high-level design that addresses microgravity (e.g., sealed brewing, capillary action) and integrates with ISS systems (water, power, waste).
Propose metrics (crew satisfaction, resource usage, reliability) and a plan for testing and iteration, including ground simulations and ISS trials.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.