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Super Heavy has splashed down in The Gulf of Mexico

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

#471

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V2 was of questionable legitimate military utility too. Sure you can hit a target the size of a city, but unlike carpet bombing, the payload isn't enough to guarantee that something specific is destroyed. So you can only use it to randomly harm civilians and maybe every once in a while hit a military target. Compare this with the Western Allies' approach where they also killed and maimed tons of civilians but at leas…

Firebombing whole cities in Europe and Japan is still a black mark in US history. It’s really hard for me to get “holier than thou” on other terror campaigns when I remember that.

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

#473
post #307

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Also lost an engine at startup and another engine during the landing burn on the booster. Judging by the debris maybe a third engine during landing burn shutdown (or maybe that was the second engine just exploding a bit more). Still a successful test, still a lot of work to do before they can meet their promises for Artemis (which require >10 back to back launches for one lunar mission...)

True. Heard SpaceX commentator today saying they plan 4 launch towers in near term. Hopefully the major issues that lead to FAA investigations are resolved and the cadence can ramp up. Probably won't be long before Starship's launch as often as Falcon 9s today.

The FAA's license authorization for this flight mentioned that they wouldn't require a full mishap investigation unless someone got hurt, property got damaged, or debris fell outside the designated areas, so the turnaround for approving the next flight should be pretty quick. https://x.com/SciGuySpace/status/1798089390708687106 has the full text.

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

#474
post #371

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I've got the black and white arty photo as my lockscreen which gives you an idea https://cdn.mos.cms.futurecdn.net/E46BxzjjUkpthVBNE6k8mn-192...

It reminds me of the old photos of builders eating their lunch atop half-finished skyscrapers. https://en.m.wikipedia.org/wiki/Lunch_atop_a_Skyscraper

I think it was inspired by that. There's a high resolution version here:

https://forum.nasaspaceflight.com/index.php?action=dlattach;...

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

#475
post #359
post #3

The rate of descent is absolutely astonishing, 8km -> 1km in 20 seconds, then just hovers above the water. Absolutely incredible work by the SpaceX team. Living in central Florida I cannot wait for the new launch facility to come online. We're going to have lines of spectators into the space coast like we did for the shuttle. If any of you are heading to Disney World you should stop by the NASA Kennedy Visitor Comple…

What is even more impressive to me is that they were able to quite reliably stream all this through Starlink. This shows how mature and usable Starlink is. The fact that you can have live internet connection on re-entering space ship - truly the future is here.

The video isn't really live. The original may have had buffering problems, etc.

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

#476
post #421

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I only live close enough to be able to see Enterprise, which didn't go to space, but I like to go there at least once a year, just because seeing the sheer size of it and knowing that all the Shuttles were like that is inspiring (the SR-71 helps too). I'm planning a trip to the space coast when family visits next year though.

Man I hope Musk names one of the Starships Enterprise.

Bet he will

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

#477

Seeing the Starship's flap visibly burning in the reentry heat and still survive well enough to move around and get to a splashdown was just incredible. Amazing progress in just four test flights.

That flap is already a legend, kept at it even mangled by hot plasma, crazy accelerations and pressures, spitting molten steel at the camera. What a role model, the little flap that could.

Makes me want to play flappy bird.

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

#478

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It blew my mind that just the fuel pump for just one engine has a power rated in the tens of thousands of horsepower/kW.

Yep, those pumps have to push the propellant into the explosion harder than the explosion pushes back. That takes serious power!

So thinking where the leverage is - is it like hydraulics where the input cross-section is a lot smaller than the output cross-section? That's kinda what the nozzle looks like.

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

#479

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The way the booster comes down is nuts. 90km to 1km in 100 seconds, it reaches maximum velocity under gravity at a bit over 20km, then air resistance acts as a brake, and they only fire the engines to slow it down the rest of the way at 1km. Bonkers.

The thing that tickles me is that it has to slow down to reach terminal velocity rather than the normal way of thinking about objects speeding up to reach terminal velocity.

Wait a minute; we've been lied to!

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

#480

Earlier quoted context omitted.

Ramsar, Iran has similar levels of background radiation as being on the surface of Mars. And people live completely healthy long lives there. Chronic low-level radiation isn't nearly as bad as we once thought. It's acute high-level doses or consuming radioactive substances that you really need to worry about. Mars really won't be bad at all with some easily implemented mitigation measures.

The commenter is talking about the 6 month trip to Mars in space, not on the surface.

It's not that different between the two; Mars lacks a magnetosphere, so the planet itself is left to block about half of what'd hit you in interplanetary space.
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