Live data from Hacker News

Super Heavy has splashed down in The Gulf of Mexico

twitter.com

221–230 of 899 posts

Re: Super Heavy has splashed down in The Gulf of Mexico

#221
post #120

Watching pieces of the ship melt off, but then seeing it make a relatively controlled landing, is perversely confidence building. If it can survive that kind of damage on a control surface maybe it's a quite robust craft.

I’ve said for a while that we won’t be ready for the real space age until you can have a rusty pickup in space. What I mean by that is that we have it down well enough that the tech exceeds tolerances and can degrade gracefully. You see this in some sci-fi where there are rust bucket old ships that work.

You have to be careful how much wisdom you glean from fiction.

The sheer hostility of space kind of precludes the "she's a good ol' ship" trope. When your door doesn't shut on your pickup, you can bang on it a bit. When your door doesn't shut on your spacecraft, you've got a ship full of corpses that look like a blob fish brought up from the Marianas Trench.

Re: Super Heavy has splashed down in The Gulf of Mexico

#222

Earlier quoted context omitted.

Anything Mars is pure BS. Just anything and everything. The one way trip to mars is orders of magnitude more complicated than moon. Keeping people from being riddled with cancer in 6months trip is not trivial. Landing and then what you plan a flag and die?

"Keeping people from being riddled with cancer in 6months trip is not trivial." It's pretty trivial. Put mass in between you and space. It's already been researched to death and we have many years worth of data about the subject.

It's trivial in the sense that telling people trying to lose weight to just eat fewer calories is trivial.

Simple idea, hard to execute.

Re: Super Heavy has splashed down in The Gulf of Mexico

#223
post #220

Earlier quoted context omitted.

The door design isn't final yet, there's no point in whining about it. They need tankers and landers for NASA contracts short term (neither of which require payload deployment), anything else is a nice to have that can be tinkered with on the side until it works.

The door is a major issue to using super heavy to deliver other payloads which is a goal long term and the need for a heat shield on the bottom makes it hard to make it fully open towards the front. Kind of need to have this fairly well sorted from the beginning because new designs mean new testing and certification which are expensive.

No. That's the whole point of SpaceX's development model, testing done right is absurdly cheap.

Re: Super Heavy has splashed down in The Gulf of Mexico

#225
post #120

Earlier quoted context omitted.

I’ve said for a while that we won’t be ready for the real space age until you can have a rusty pickup in space. What I mean by that is that we have it down well enough that the tech exceeds tolerances and can degrade gracefully. You see this in some sci-fi where there are rust bucket old ships that work.

You have to be careful how much wisdom you glean from fiction. The sheer hostility of space kind of precludes the "she's a good ol' ship" trope. When your door doesn't shut on your pickup, you can bang on it a bit. When your door doesn't shut on your spacecraft, you've got a ship full of corpses that look like a blob fish brought up from the Marianas Trench.

That's more an argument for redundant doors than perfect doors, though.

Re: Super Heavy has splashed down in The Gulf of Mexico

#226
post #155

Big respect to that camera lens cover. The drama of seeing the camera get obscured and then have the cover crack was peak.

Everyone said it cracked, but it didn't look like cracking to me. It looked like carbon vapor deposition/metal vapor deposition.

Re: Super Heavy has splashed down in The Gulf of Mexico

#227
post #161

Earlier quoted context omitted.

> Landing and then what you plan a flag and die? Pretty much, why do you think columbus set off? And he didn't even know if he'd actually find anything. I don't understand your attitude and people like you, human beings have been explorers forever, and seem to value exploring even over survival potentially. I'd say it's pretty obviously evolutionarily coded into us. Maybe not you, but into many people.

Columbus very very much didn't plan to die (though he very much would have if he didn't get lucky that there was a whole new continent there). His plan was to land in India, which he thought he would reach around the time he actually reached the new continent, because he had a completely wrong idea of how large the globe actually was (he alone had this wrong idea; the actual circumference of the globe was pretty well…

Yeah, but it's in your text/comment. The logical thing is that it makes 0 sense. Columbus to not take the real circumference makes 0 sense. Let's go to Mars, start a civilization there. It'll be a lot of change for us humans. And only if you live somewhere you can really solve problems. Maybe it's a good plan against a nuclear war, whatever.

Re: Super Heavy has splashed down in The Gulf of Mexico

#228
post #217
post #68

What the hell, half melted starship actually did the landing flip and hit the ocean slow!!! That was amazing!

Can someone explain why reentry must be so hellish? The energy gained during the rocket burn into orbit must be bled off during reentry, and that energy is enormous. However, why must reentry occur so quickly? It seems if the descent into the atmosphere was slower, the heat shield would be able to radiate the heat energy away more effectively, thus lowering skin temperatures, and significantly reducing the engineerin…

They use the atmosphere to help slow the ship down. It takes most of the tank of fuel to get up there and moving so fast. It would take most a tank to slow down. So, they would need about double the fuel plus some for landing.

P.S. I have not done any of the math (I might be able to figure it out but it might take a week or two to figure it out).

P.S.S : Maybe if they could refuel in space efficiently (asteroid mining?) it might be worth looking at but it will be a while before I would expect anything like that. It would just be the ship.

Re: Super Heavy has splashed down in The Gulf of Mexico

#229
post #217
post #68

What the hell, half melted starship actually did the landing flip and hit the ocean slow!!! That was amazing!

Can someone explain why reentry must be so hellish? The energy gained during the rocket burn into orbit must be bled off during reentry, and that energy is enormous. However, why must reentry occur so quickly? It seems if the descent into the atmosphere was slower, the heat shield would be able to radiate the heat energy away more effectively, thus lowering skin temperatures, and significantly reducing the engineerin…

The velocity of a spacecraft in low earth orbit is over 15,000 miles per hour. Smashing into the atmosphere is perhaps the most fuel- and cost-efficient way to slow down to a speed at which landing is possible.

Re: Super Heavy has splashed down in The Gulf of Mexico

#230
post #94
post #68

What the hell, half melted starship actually did the landing flip and hit the ocean slow!!! That was amazing!

That was seriously some of the most dramatic television I've ever watched. Video of Starship being melted/torn apart by supersonic plasma, the broadcast stream dying multiple times maybe due to ship destruction, then finally back online, peeking through the cracked camera to see the nearly destroyed grid fin STILL ACTUATING. The announcers laughing about the ship being "maybe held together by some nuts and bolts" and…

I have never rooted for a flap so hard, and likely never will. I am ready to buy flap merch. The energy of the SpaceX employees gave me goosebumps, this was great, it was hard not to get caught up in it- you know this is the culmination of years of hard work that is mostly theoretical until tests like these.
Post reply on HN