Engine and component test cells run qualification and acceptance campaigns for flight hardware. Every fire is commanded against a written test card — a stepped sequence of valve states, throttle points and hold durations — under AS9100 quality governance, with software-in-the-loop elements under DO 178C.
A single hot-fire produces dense telemetry: chamber pressure at kilohertz rates, propellant tank pressures and temperatures, valve position feedback, structural strain, thrust. All of it has to be reconciled against the card, the SOPs, and the calibration state of every sensor on the stand.
