Kudo's to the team! This is a great success.
Indian startup 3D prints rocket engine in 72 hours
61–70 of 288 posts
Re: Indian startup 3D prints rocket engine in 72 hours
#62Earlier quoted context omitted.
I'm not sure how many people know about their 'sound detection system'. Carbon fiber is a fickle beast and is prone to such failures so that alone worried me, but it was incredible for me to learn that they expected some sort of early warning from cracking.
Do you have a link? Google just gives results about the US Navy detection of the implosion…
Re: Indian startup 3D prints rocket engine in 72 hours
#63>Constructing a rocket engine using conventional approaches can take months, followed by extensive qualification testing to ensure it meets the required specifications. Using a metal 3D printer from German company EOS, Agnikul produced its engine in roughly three days. Agnikul printed the engine out of inconel, a high-performance alloy of nickel and chromium that can withstand high temperatures and mechanical loads. The machine also automatically outputs a report that details any deviations during printing, removing the need for postfabrication qualification.
What amateurs are at work here? This plainly is not true and if you believe this can work you can not be trusted to be anywhere near an engineering project.
Besides, the question I have is why 3D printing? There are innumerable ways to manufacture a rocket, why did they choose 3D printing? If it is because they think you don't need qualification and testing for the produced hardware they should not be allowed to launch anything they make.
Re: Indian startup 3D prints rocket engine in 72 hours
#64Earlier quoted context omitted.
Titan submersible sound detection system vibes.
I'm not sure how many people know about their 'sound detection system'. Carbon fiber is a fickle beast and is prone to such failures so that alone worried me, but it was incredible for me to learn that they expected some sort of early warning from cracking.
Well there were probably some early warning signs
The problem is that warning sign comes at around 10ms or less before the actual disaster
Re: Indian startup 3D prints rocket engine in 72 hours
#65> The machine also automatically outputs a report that details any deviations during printing, removing the need for postfabrication qualification. Anyone who's previously worked with 3D printing knows that this simply does not pass any kind of a sniff test. Both preventing and detecting internal defects is one of the, if not the hardest problem in 3D printing. There are many large companies trying to find ways to re…
If they’re not doing post fabrication validation, then the passengers are…
... test dummies.
Re: Indian startup 3D prints rocket engine in 72 hours
#66Earlier quoted context omitted.
> That technology must have transferred over somehow Nope. Russia and Israel attempted that for India in the 1990s but were threatened by US sanctions for breaking MCTR. Idk why you're so surprised that these kinds of domestic capabilities exist in India now. India is fairly poor, but R&D capabilities have been strong, and there is an actual reverse brain drain going on from the US now that GC backlogs are multi-deca…
It takes them 40 years to make a contemporary fighter jet, not all of which is in house, and they cannot make an infantry rifle, tank, or any defense equipment that their DoD equivalent is happy with outside of "ring laser gyroscopes", which was developed as a part of their guided missile program, which was made with covert and overt Russian and possibly Iraqi help. They cannot make their own trainsets, cars, and con…
> Most of Japanese innovation is actually from US companies that they took over.
Just gonna leave this here: https://en.wikipedia.org/wiki/List_of_Japanese_inventions_an...
Hopefully you'll realize that that is one of the more uninformed takes you've had, and then question the other things you think are true.
Re: Indian startup 3D prints rocket engine in 72 hours
#67Kudo's to the team! This is a great success.
I hope they all get to ride on it like true engineers would.
Re: Indian startup 3D prints rocket engine in 72 hours
#68>Constructing a rocket engine using conventional approaches can take months, followed by extensive qualification testing to ensure it meets the required specifications. Using a metal 3D printer from German company EOS, Agnikul produced its engine in roughly three days. Agnikul printed the engine out of inconel, a high-performance alloy of nickel and chromium that can withstand high temperatures and mechanical loads.…
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Re: Indian startup 3D prints rocket engine in 72 hours
#69Earlier quoted context omitted.
I don't think people are moving back to India for jobs last time I checked if thats what your implying with your reverse brain drain comment.
Where do those laid off Indian H1B and EB1/2 move? The reverse drain has started already for several years now (around 2021-22). Indians will still come to the US, do a BS masters, and then work in an American company for a couple years, but they inevitably face a 134 year backlog for naturalization. You can either live in the US as an indentured servant for a company, and end up getting kicked out if you get laid of…
> Where do those laid off Indian H1B and EB1/2 move?
I don't think that would be a "reverse". A reverse would be Americans trying to apply en masse to Indian companies.
Re: Indian startup 3D prints rocket engine in 72 hours
#70Relativity Space are also 3-D printing not just rocket engines, but entire rockets, and have had a successful first flight. https://www.youtube.com/watch?v=kz165f1g8-E
They backed away from printing entire rockets because, well, it's a foolish way to fabricate large tanks.