News for hackers. Stuff that matters.

A comment on Why Jet Engines Aren't "Made in China". Parent comment

Re:Why Jet Engines Aren't "Made in China" by pfdietz on Thursday July 02, 2026 @06:01AM (#48758974)
Directional solidification is a kind of additive manufacturing? You're carefully adding to macroscopic crystalline structure at a propagating melt/solid interface.
[ Parent | on HN ]
Re:Why Jet Engines Aren't "Made in China" by rbanffy on Thursday July 02, 2026 @07:32AM (#48759773)
It kind of is, but it happens within the molten part, so it's harder to control (and, considering how hard, I'd say the science behind it is still poorly understood).
[ Parent | on HN ]
Re:Why Jet Engines Aren't "Made in China" by datadrivenangel on Thursday July 02, 2026 @09:26AM (#48761248)
They get perfect enough single crystal superalloy blades every time ... after throwing out the half that fail. The science is well understood, even if it's fiendishly hard [0]

0 - https://www.asme.org/wwwasmeorg/media/resourcefiles/aboutasm...

[ Parent | on HN ]