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Fifth helium leak detected on Starliner (spacenews.com)

submitted 2 months ago by [email protected] to c/[email protected]

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[–] [email protected] 20 points 2 months ago (4 children)

"psi [pounds per square inch] per minute" is an odd unit of measure.

[–] [email protected] 12 points 2 months ago (3 children)

The SI version would be Pascals per second, which simplifies to... kg / (m * s^3)? Kilogram per meter per second cubed?

[–] [email protected] 3 points 2 months ago (2 children)

But in SI you can easily (and metrically) translate it to volume/s, which would then probably be less cumbersome.

[–] [email protected] 7 points 2 months ago

The volumes would be different on either side of the leak. Usually you standardise leak measurements to STP, and give it in standard cubic centimetres per second, SCC/s, i.e. 'how much fluid would be escaping if it were in a room at one atmosphere of pressure at 20°C'. Makes it easier to compare.

[–] [email protected] 1 points 2 months ago

Not volume/s, pressure/s