SpaceX CEO Elon Musk told CNBC on Friday that investigators have found the root cause of the fire and explosion that destroyed a Falcon 9 booster on Sept. 1. The company expects to resume launches by the middle of December.
Musk, confirming earlier discussion about the investigation, said the failure involved liquid helium being loaded into bottles made of carbon composite materials within the liquid oxygen tank in the rocket’s upper stage. This created solid oxygen, which Musk previously said could have ignited with the carbon composite materials. However, he did not go into that level of detail in his CNBC comments.
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