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"After the weekend's shorter-than-hoped-for test firing of the core stage of NASA's monstrous Space Launch System (SLS) rocket, engineers have confirmed the hardware remains in 'excellent condition' and blamed 'test parameters that were intentionally conservative.'

The parameters were designed for ground testing and were exceeded by a hydraulic system during gimballing by thrust vector control hardware, resulting in the shutdown. 'If this scenario occurred during a flight,' the agency explained, 'the rocket would have continued to fly using the remaining CAPUs [Core Stage Auxiliary Power Units] to power the thrust vector control systems for the engines.'"