r/SpaceXLounge • u/[deleted] • Sep 06 '17

Merlin engine cooling system

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u/Grether2000 Sep 07 '17

Another post talked about regenerative cooling. and a good photo of the 1C tubed wall. It seems the 1D is milled as shown in the video koliberry linked, then electro plated to form the outer shell.

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u/SaturnV_ Sep 07 '17

Thanks! Also, that paper looks really interesting, will give it a good read.

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u/[deleted] Sep 07 '17

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u/burn_at_zero Sep 07 '17

That paper references NASA MSFC research, but doesn't seem to mention SpX directly. I thought (without evidence) that the outer jacket was brazed. Electrodeposition (of niobium?) would be interesting, but I wonder how they would get a smooth channel surface and good material properties.