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This appears to be a pressure-fed rather than pumped engine, so limited real-world utility. Nonetheless, it’s incredibly impressive especially given that it seems to have been successful on the first try.

I wonder how practical it might be to integrate turbo machinery into an automated design system like this?

Oh, and it really is beautiful with copper construction and that fascinating swirl.




> This appears to be a pressure-fed rather than pumped engine, so limited real-world utility

This is addressed in the article:

> This is a relatively compact engine, which would be suitable for a final kick stage of an orbital rocket.

It has lots of real world application, just not currently as part of a lift stage since you're right it's a pressure based one as opposed to a pumped engine.


All are pressure fed. A pump generates pressure. It's common to test engine components without pumps using high pressure vessels in lieu of pumps. The E Complex at Stennis Space Center specializes in this approach.


Pressure fed is a fixed term when applied to rocket engines and means “fed only by the pressure in the tank (which is most of the time generated by having a pressurization system fed by another high pressure helium tank) and not by a pump”.


If I'm not mistaken, the Falcon 1 used a pressure-fed upper stage engine.


Sure did! The Kestrel engine (had to double-check that memory) was a cute little thing, but it did the job.


The swirl isn't really an essential part of the rocket design, but ports for thermocouples (i.e, temperature sensors).


“ The engine uses thin cooling channels that swirl around the chamber jacket, with a variable cross sections as thin as 0.8mm. The Kerosene is pressed through the channels to cool the engine and prevent it from melting.”




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