pre-breath in spacesuit for CEV crew?

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carp

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Before the launch the astronauts of CEV will have to make pre-breath closed in theirs spacesuits like in the missions Apollo?
 
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gunsandrockets

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"No, the CEV will be a nitrogen/oxygen atmoshpere at sea level pressure."<br /><br />??<br /><br />Sea level is what, about 15 pounds per square inch? I thought the CEV and LSAM are going to run at 9.5.
 
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darkenfast

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I believe the CEV will run at sea-level pressure for missions to the ISS, but at about 9-something psi for lunar missions to avoid rigorous pre-breathing regimes.
 
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