Відео

Even as an aerospace engineer, Stockton Rush should have been VERY familiar with carbon fiber composites. The Goodman diagram for carbon fiber looks like the sails on a cartoon sailboat: a nice big triangular sail pointing toward the bow (tension side), and a skinny triangle sail pointing toward the stern (compression side). Even worse, the carbon fiber was coiled in a circle to make the body of the submarine. It was literally just a thick carbon-fiber "slinky" held together with epoxy. Of course, the nose dome and tail cone were ALSO glued to the body using epoxy. Consequently, the submarine imploded, with an energy equal to the water pressure times the volume of the submarine. The end result, discovered by the Coast Guard, was an intact nose cone and tail cone, and a "wide field of debris", which was obviously shattered fragments of carbon fiber "shrapnel". Side Note: The Coast Guard and the media knew the position of the submarine LONG before those 96 hours were up. The massive implosion was so loud that it was picked up by every ocean microphone in the area. They only needed THREE microphones to triangulate its exact location.

I can excuse your inability to pronounce 't's in computer and motor etc being from north of Watford, but the 'u's in aluminium are unforgiveable. Traitor.

"fighter aircraft are not designed to look good" this dude has never seen an F22.

Watched it the first time and I’ll watch it again.

In addition to the book you mentioned (The Challenger Launch Decision), I would also recommend Normal Accidents by Charles Perrow. Hopefully you read it in your ethics in engineering course. Another follow-on topic would be probabilistic risk analysis (PRA), which aligns with Normal Accidents and nuclear power risk management as well.

i saw a marine biologist with 0 qualifications like yours who once rode in a submarine being invited to give 12-min news segments and presentations on mainstream TV. you ARE a leading expert if you choose to present yourself as such! legit - like, go and email TV stations with your qualifications and this documentary you made as the 1 year anniversary comes up. seeing the standard for some of the ‘experts’ speaking on the Titan so far and recently, especially to the general audience, you will absolutely get featured and be able to have a platform to share your thoughts. have confidence!! just because you’re not a submarine engineer doesn’t mean you’re not an expert!

Hey Alex - Another way to look at your point on effectiveness of the LES. If we wanted to start calling the LES a safety function... - It's been in use for pretty much the history of manned spaceflight. - It has been previously demanded in ~1% of manned flights - It has been 100% effective when demanded (Even on the Soyuz where ground control had to performed convoluted 2-confirm radio signal to manually activate it due to the energise-to-operate control system having already melted...). So, we have a coarse dataset that says this system is standard industry practice, highly effective at saving lives, and has been demanded 1% of the time - which accounts for almost half of loss-of-vehicle incidents with people on-board. I can't think of a regulator or assessor for a goal-based regime that wouldn't (rightfully) question me for selecting a concept that removed such a safeguard entirely, regardless of what inherent/passive safety you claim or DAL/SIL/PL you assign to another safeguard that should be demanded earlier - "final" protections will always be needed due to uncertainty and edge failure cases due to unforeseen system interactions... and we're talking about spaceflight here... And that doesn't even go in to demand rate calculations (not reaching general industrial ~10^-4 when you've knowingly left a 9x10^-3 per flight hazard's 100% effective safeguard off the table...). Also - this video was absolutely brilliant. Great job.

Fluorine turbopump yeah ok, I'm out

10 mins in.. get to the point!!

Cheers man, that was really interesting. Just did a saftey course a work, and thats all mainly on the ground LOL.

1:03:19 that's some highly unconvincing argument considering the amount of test pilots dead and alive worldwide.

I don't think anyone who has *seriously* considered space tourism (meaning the ultra rich) are under any illusions about the risks involved. They are by nature risk takers.

Those tubes were invented long time before top secret duhhh

Great video thank you for sharing

Honestly it all started to go wrong when they designed a sub that looks like something you'd find under a teen boy's bed

Let’s make a documentary… Ok… But it has to start with the most annoying noise we can find… Ok…

I actually caught the carbide story being a red flag right from the outset. When I first heard it my initial thought was "Hey wait, isn't carbide really brittle when placed under high pressure? Are you sure this would actually work?"

17:05 there may be a formula for n bits to store and retrieve that will universally apply

It will be fine "*slaps the roof of sub*"

"Controlled metal fire" now I want to mess with lithium

"Hypergolic chemicals sound very dangerous, but you just need to keep them apart, you know." University sub-orbutals team leader, who is a Computer Science Engineer student, couse who else would you trust with building a thing to shoot into the sky, than us comp.sci. folks...

This is S tier content. Brilliantly put together, exciting to watch and I can't wait for Buran! I've got interested in this more recently since I designed my own next gen shuttle in KSP that I think improves on this a lot. Makes me sad it didn't happen irl. Was capable of so much more if they just developed it in the right way. I might make a video on it myself at some point explaining

TOOK ME A COUPLE MONTHS TO LEARN but oh my god I am so ecstatic that a person like you has even seen my content. your videos are so damn awesome and researched to an incredible degree. to have one of my piss poor videos in your description is nothing short of an awesome honor. KEEP IT UP MAN!!! LOVED THE SHUTTLE VIDEO!!!!!

18:08 Love the shade thrown at the SLS. It's an impressive rocket to be sure, but if they were going to throw the engines away with each launch they'd probably be better off with something like the remade Rockedyne F-1

Just want to add that Wired has since reported the supposed reasons hull scans were impossible (not that they absolve OceanGate even a little): "Later, OceanGate engineers found that Titan’s full-size hull was too thick for portable ultrasonic scanners, and a coating Spencer had applied to it would further block the signals. Rush decided that moving the entire sub to a lab for scanning would be too expensive, says a former employee who was familiar with Rush’s thinking."

Because Britain only cares about Britain and how much they can take from the rest of the world. Giving back isn't really something they would even think of.

1. Excellent network quality production right here. 2. Why wouldn't you share a 40 page report to the saftey director? 3. Why is the Nitrous Oxide tank material treated like classified information, and what's it pressurized to? 4. There are a host of other issues that leave one bewildered to the point of switching from a neutral perspective to outright sketch AF perspective. - Surry Virginia USA 🇺🇸

amazing music video

It was a waste of money, and it will be remembered with bitterness.

Thank You, probably the best video about Titan with many very interesting facts.

hydroflouric acid exhaust decomposing the launch pad is simultaneousley tho funniest and most terrifying thing i can imagine

This guy talks about his "credentials" but then says I'm not an expert.....

I play elite dangerous on a PIMAX 8k.. 3080 card.. ABSOLUTELY amazing how immersive it is. The original elite was groundbreaking back in the day

Ignorant question: does the efficiency of this code rival that of the code that drove the Apollo missions?

morgan: send me to space nasa: no morgan: bet? *becomes astronaut; goes to space; quits what an absolute savage

I'm interested in some other tripropellant rockets - ones using magnesium/aluminum along with LOX and LH2. Magnesium/aluminum oxides seem to be available on the Moon, for example, so this could be an interesting propellant combo for ISRU. However, as near as I can figure, these skew the propellant ratios even more toward LH2, so you end up needing more LH2 than ordinary hydrolox (which can be even be reduced near sotchiometric at the expensive of Isp - we're talking 1:8 rather than 1:4, almost halving the LH2 needs after taking the Isp hit into account). The thing is, the most convenient resource out there to get LH2 from is water ice, and you get LOX almost as a "free" waste product at 1:8 ratio. So saving some lox while increasing LH2 logistical requirements just isn't a win. Magnesium/aluminum fuel can still be useful with other oxidizers, though, like water or CO2.

unfortunate that they never got to know that they were the stupidest persons in the ocean unfortunate that atomisation kicked in before they could percieve that

This is a great video.

You have knowledge of water thats all matters

There is a fascinating book by the name of "Truth, Lies, and O-Rings" By Allan J. McDonald. What makes it one of my favorite reads on the Challenger disaster is because Mr. McDonald was one of the engineers of Morton Thiokol at the pre launch meeting for Challenger. His book gives insight like no other I had read from the thought processes that he believed lead to the change in decision by Thiokol from "No Launch" to "Launch," to the Hearings during the Presidential Commission, and all the way through the rather difficult times he had in the company after testifying and booster redesign. Another wonderful book that covers the subject, though in part, is "What Do You Care What Other People Think" by Richard P. Feynman. While being an entertaining read from a very interesting man, it goes over his time as part of the Rogers Commission. If you have some spare time to read, or prefer an audio book, I believe both these titles are worth your time.

He said there’s videos on it but having trouble finding it. Any resources on the history of the people behind elite anyone would suggest?

You could turn the pumps with an electric setup using a lightweight super capacitor

RL-10 has higher ISP then both RS-25 and the soviet engine. But I guess you may disregard it if it can't be used in sea- level, and in the vaccum an areospike prototype for venture star has a higher isp. RS-25 is kinda overrated but is still very impressive considering the time it was developed.

Have you read the new article in WIRED? a journalist did tease apart fact from fiction in it. I think kit would blow your mind. For instance the viewport was only rated for 625 meters!

Heavy industrial equipment not sexy? You know better :)

This seems like more an indictment of current systems / a few companies. If the cost to do SpaceX based tourism falls to a point I can afford - I would feel very safe aboard a system that’s been properly certified and that Elons blown up every possible way. I do also think - that while it doesn’t alleviate the burden on companies, and think it sounds like virgin galactic has been morally dubious…. There is a personal responsibility to look out for yourself not dying. E.g. with the titan mercury sub - it sounds like the company lied, had poor testing etc. and I feel bad for the passengers. That being said - if I’m on one of the first 100 iterations of something - I am doing my own diligence. If I can spend $250k on some expedition, I can also track down and get into contact with 3rd party experts in the field. And in that case - much of the industry was warning of this long before it happened. It may not be easy. And maybe the company “should” be doing this for me. But given that I want to keep me alive - I think i can stomach a couple a couple months of light research and networking to get some second opinions.

There is NO argument, Elite IS the best game ever made...

Brilliant video. I'd like to know more about how that target tracking radar worked as well.

Minuteman has 3 warheads...MX has 10

'the myth of informed consent' is a really interesting tagline... and it keeps becoming more and more relevant because of how billionares keep being dumb tourists like just go to istanbul like the rest of us it's very nice there