How SpaceX Streamlined the Raptor Engine

Re:How SpaceX Streamlined the Raptor Engine by gus_massa on Friday September 18, 2026 @06:13PM (#49760945)

I'm not sure if it make sense but... is it possible to put the printer inside a vacuum chamber so there is no air to fill the internal bubbles?

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Re:How SpaceX Streamlined the Raptor Engine by pixl97 on Friday September 18, 2026 @07:47PM (#49761798)

Cooling would be an interesting problem. Atmosphere takes away the heat pretty readily.

You could have a cooling plate the work is on. But the higher temperature difference is apt to cause warping.

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Re:How SpaceX Streamlined the Raptor Engine by s1artibartfast on Friday September 18, 2026 @09:33PM (#49762460)

Vacuum filled pores would also be an issue.

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Re:How SpaceX Streamlined the Raptor Engine by gus_massa on Saturday September 19, 2026 @07:54AM (#49765789)

I expect them to collapse due to surface tension or something.

[Slightly related https://en.wikipedia.org/wiki/Cavitation The problem is that the bubbles are filled with vapor instead of CO2 like in sparkling water.]

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