Earlier quoted context omitted.
If any system could measure its own signal to noise accurately, it wouldn't have any noise in the first place.
This is a "truthy" statement that sounds right but is, in fact, false. Radio systems have an easily measurable SNR, but the noise cannot be eliminated.
Indian startup 3D prints rocket engine in 72 hours
171–180 of 288 posts
Re: Indian startup 3D prints rocket engine in 72 hours
#172Earlier quoted context omitted.
>You hardly enough know anything about the project to make an assumption about the absence of QA. I take their claims at face value. Either they are for some weird reason lying about not doing QA or they are extremely negligent in their manufacturing. Granted, I can not exclude the first option, but to be honest that might make the company look even worse.
They're not shipping people into space with this tech yet. As such, even if QA were missing, which we don't really know much about, the need for QA is way less than you make it out to be. It's not a big deal if a cargo rocket blows up, and so far it hasn't even blown up. Together, this is why your line of comments is unqualified.
Re: Indian startup 3D prints rocket engine in 72 hours
#173Re: Indian startup 3D prints rocket engine in 72 hours
#174Earlier quoted context omitted.
> I hope people who break laws to immigrate to America, will continue having the same sympathies towards you, when they become majority, and start dominating over you with their culture. I don't know how many folks around me broke the law to immigrate to America, but whether or not they broke the law to come here they faced a lot of racism, classism, and suspicion. I've been in the same area for about 20 years, and i…
If you don't mind sharing, i'm curious to know where you live. I live in North central Oak Cliff which is a large, predominantly hispanic, area consisting of multiple neighborhood just SSW of downtown Dallas. In my neighborhood there's a local Mercado that i can walk to for small things, i speak enough Spanish to manage but I'm eyed with suspicion from when i go in to when i leave. My wife is a HS teacher with about…
Re: Indian startup 3D prints rocket engine in 72 hours
#175Re: Indian startup 3D prints rocket engine in 72 hours
#176Earlier quoted context omitted.
OSHA has a nice pamphlet regarding hazard identification and hazard controls. The least effective method of protecting workers is to put the risk on the worker to protect themselves. Your view has a similar vibe to "well they weren't wearing their hard hat and so it's their fault," a view that has been rejected across the board for safety in favor of the view that even letting the situation get to that point is a fai…
Driver control IS making the driver responsible, by definition. Tesla is legally required to put the driver in control. This is a driver assist program. There is no way such a program, that is subordinate to the driver and depends on the driver being in control, can protect the driver from not doing their part, and driving.
Second, who do you think was ultimately the one at fault for the excessive radiation doses caused by the Therac-25 machines: the machine technician operating the machine or the machine manufacturer? If it isn't the technician then I don't understand your argument because you can just find/replace every instance of driver in your post with technician.
Re: Indian startup 3D prints rocket engine in 72 hours
#177Earlier quoted context omitted.
>> maybe the juice isn't worth the squeeze In rockets/aerospace, where the failure of any one of a thousand different parts means instant disintegration, checks are always worth the squeeze. Everyone talks about building rockets on the cheap and accepting a slightly-higher failure rate, but in reality that doesn't work. Even a tiny increase in component fault rates translates to total mission failure once multiplied…
this might be 20th-century thinking. if you can build enough copies of a rocket cheap enough, maybe disintegrating a bunch of them isn't a showstopper
But it isn't about destroying a bunch of them. Cut corners on checks and you very quickly blow up all of them. Any slight increase in the failure rate of individual parts, saving a few pennies, multiplies exponentially across the entire rocket into total system failure. So the money-saving approach is actually to test test and retest, to cram down the failure rates so low that the cumulative rate become acceptable (about 1%).
Re: Indian startup 3D prints rocket engine in 72 hours
#178> 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…
Re: Indian startup 3D prints rocket engine in 72 hours
#179That's super cool. India has enormous potential and it is amazing to witness the rise of its tech scene.
They then further claim you don't need to do any post-manufacturing qualifications, which is absolute nonsense. So it's either misreporting or it's an indication of Indian incompetence/lying.
Re: Indian startup 3D prints rocket engine in 72 hours
#180Among world-firsts that happen in contemporary India, this is probably one of the coolest.