Propulsion Flaw Doomed SpaceX Crew Dragon Test Vehicle

Crew Dragon
Credit: SpaceX
CAPE CANAVERAL—Two months after a ground test accident destroyed a SpaceX Crew Dragon capsule, the company disclosed a design flaw that allowed a slug of nitrogen tetroxide (NTO), used as an oxidizer for the capsule’s inflight and abort system engines, to slam into a titanium valve, causing it to...

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