SpaceX Finally Does The Last Big Starship Test Before Flight 5!
ฝัง
- เผยแพร่เมื่อ 6 ก.ย. 2024
- SpaceX’s Starship Ship 30 for the next launch is complete… but requires more testing? Starbase’s Starship Tower Two goes up faster and faster! Will it go up in time to meet the goal? Is SpaceX really going to destroy the ISS for NASA? Why is NASA’s moon rover being replaced by concrete? Essential building blocks for life on Mars. Does this mean life on Mars?
#SpaceX #starship #elonmusk #starbase
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Editing: John Young, Alex Potvin, Stefanie Schlang
Photography: John Cargile, John Winkopp & Stefanie Schlang
3D Animation: Voop3D
Script & Research: Nathan, Soren, Oskar Wrobel, Felix Schlang
LIVE Production: Astro Roadie, Jonahan Heuer
Host: Felix Schlang
Production: Stefanie & Felix Schlang
Graphics & Media Processing: Jonathan Heuer, Felix Schlang
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An added ablative layer below and a higher grade heat tile on top. Is this going to make it through reentry? What do you think?
i hope so
starship made it through reentry without the new heatshields and ablative layer. So the right question wourld be if something melts
Sure, but how will they know how much was really needed? Will they recover it and see how much was ablated? Or use the same protection until they can land?
@@TheMcMagnus they also recovered the last Ship that landed in the ocean
we will be watching as we cant design any better shield not being employed by spacex
Send a tank of frozen potable water instead of concrete. Then at least the trip will not be pointless. It would be delivering a mass of an essential resource that could be retrieved during a lunar mission in that region.
fully agree! its seems so stupid to waste the effort on nothing! much like throwing the space station away...
@@shaunandsqueak I understand the base sentiment about the ISS as well, but metal fatigue is a real concern. Extreme heating and cooling every 90 minutes over the past decades has and will continue to weaken the ISS structure to the point that each month there is an ever growing risk of sudden total structural failure due to the pressure inside the station. Having the station explosively pop at that altitude would litter that region of space with debris that could remain a threat to that orbital shell for decades. That is currently the safest orbital shell for a space station as it can (via atmospheric drag) de-orbit dangerous trash yet still be within the earth's protective magnetic field preventing the worst of the sun's radiation.
Imagine a reinforced docking hardpoint with a solar array assembly with IR cooling panels capable of having 4 or more Starships docked. This could replace and upgrade the ISS, and also make it easily retrofittable in the future by replacing each starship used as space station modules one at a time. This would be more than the pressurized volume of the ISS for each Starship involved, and introduce the capability of adding specialized Starship modules for testing micro-g manufacturing/chemistry/botany/etc...
Why frozen?
@@ThatOpalGuy When in space water will freeze, when water freezes, it's volume changes (it expands roughly 10%). If the water were not frozen you would need to leave a option of the tank empty to account for the expansion, thus introducing Sloshing. By pre-freezing the water you eliminate "Sloshing" of liquid water and the stress of freezing upon the container. Human experience in space is about managing risks. By avoiding an inevitable occurrence which could have unpredictable outcomes (water in space can freeze in many different ways, risking rupturing the container) by having the occurrence happen BEFORE the launch you completely avoid the risk involved.
meant to say portion... brains are weird, mine moreso.
There’s an open letter to Congress going around people can sign to hopefully reverse the cancellation of VIPER
i signed it
It's a weird law, and viper needs to proceed.
Also...SpaceX is gonna give us an HD video feed of the ISS falling apart as well. Just like we've finally seen near real time plasma around an aerospace vehicle coming into the atmosphere, now we're going to see the International Space Station do it!
As awesome as that sounds, it's gonna be sad to watch
The ISS is gonna mimic IFT-3 💀
@@hueyrosayaga Yeah, definitely. I remember seeing the Leonardo module while touring the Kennedy Space Center, a couple decades ago.
If that’s true it’s going to be awesome
@@schway8193 Yeah, definitely. We get so many amazing firsts, with SpaceX.
It really goes to show how slow, bureaucratic, and stuck in engineering dogma, that legacy space agencies, and contractors are stuck in. Nothing new and exciting comes from them anymore.
SLS brand new, but the camera view we got looks like a camera from the 90s. Better than none, but still poor quality.
Viper over budget, cancel it. SLS over budget, SPEND MORE! Yep, love our congress.
Car repairs. Building a house. Grocery shopping.
Nothing comes in on budget.
Even better, the Viper rover is pretty much finished. They wanted some more testing done. It's the contractor for the commercial launch vehicle that's over budget ( and will still get paid ) Scott Manley has a great vid on the subject, as well as how stupid it is.
Sign this: nasawatch.com/artemis/an-open-letter-to-congress-opposing-viper-cancellation-that-you-can-sign/
@@Whataboutit,
Thank you for this link! I'm in there buddy! Lol
@@Can_non69 The difference is car repairs, building a house, and grocery shopping get done and do not drag on for years.
One thing that SpaceX has gotten right. It's like I heard before, if you never make any mistakes, you never learn anything. Yet SpaceX is learning to not just fix errors but improve working structures. I hope to see a moon base in my lifetime:)
if you do it wont have anything to do with space x
@@SeanDSarcasm it certainly will, in his lifetime its basically impossible for a new better launch sytem to be developped, so starship is the only one, which has something to do with spacex obviously
@@Nuke-MarsX how is it impossible? and how did nasa pull this off in the age of no internet 12 times in a shorter span than space x has been trying to just stop failing?
@@SeanDSarcasm oo i get it now, youre clueless troll, thanks
@@Nuke-MarsX lol right
I explained that heat tile problem to my 13 year's old son and he was like "So why they don't make the heatshild like fish skin where each tile covers partially they neighbouring tiles. In this way the tiles are attached only on one side and they can expand". Well maybe not such a bad idea. Then, when you leave out the ablative layer maybe you can come out with around the same weight. The attachment to the body would be more complicated now but you would need only one or two attachement points
weights more
Sharp kid but yeah I think they want to make it as light as possible
It’s a good idea! I like where his thought process is going! Keep up the critical thinking. Weight is one consideration but my concern would be if the heat gets in the over lap! Thats awesome he is thinking like that though, definitely not what I was thinking about at 13 lol
not sure how that would impact tile expansion as the tile heats up. If tiles are overlayed like scales, they would likely begin to lift up off each other as the tiles heat up.
I don’t see this method being a weight issue, especially now that they are adding a new ablative layer underneath the current tile system.
I think overlapping tiles is not feasible because you’re going to get ridiculous turbulence around each lip. This will increase drag/heat and most likely cause enough turbulence around each tile that they get pulled off.
They aren't doubling the launch cadence you know they gonna lose the first one on the next test. That's not a diss they even know that, its literally why they are building that second tower before next test
We know nothing until it happens.
Adding the tower can be smart in an opposite way by increasing cadence after the results are in.
With a subsequent increase in cadence, adding a 3rd and 4th tower makes sense for de-risking the increased pace and improving build speed.
The next launch will be before the next tower is functional…
18:10 Summer in Earth's Northern Hemisphere, you mean.
Can crusher, Pez dispenser. I love it. My 8 year-old called a skunk a fart squirrel the other day. Elon calls fingers "meat sticks".
XD Fart Squirrel! Love it!
@@sammyspaniel6054 Funny. I was cleaning out our garage when my then 4 year old daughter asked how many fish catching sticks we had. A memory that still makes me chuckle.
My little sister used to call dragonflies... "crocodile flies" Cause they look more like crocodiles with wings than they do dragons lol 😆
I work on cell towers. Many carriers have a rounded box that hybrid cables (fiber and power) from the ground come into the bottom of. These get distributed into individual wires inside and then you have a bunch of small cables coming out the bottom and running out to each radio. We call it a squid.
Ted Lasso and his feet fingers!
Also, you could add more observation equipment, long term scientific experiments, and other stuff to make it even more useful. It may not be manned but automation would work well up there.
Nice animations showing the new Dragon.
Yeah the animator for WAI is goated
The writing and especially the editing are f*cking on point today, you are firing on all 8 cylinders sir, keep up the good with
Felix, greetings from good old Germany. (Bochum)
I will watch this episode now, but let me tell you, that no content on youtube (and Senkrechtstarter ;) ) means more to me than yours :) Still hope to meet you someday at Space Creator Day or somewhere else. What a journey so far!
THANK you, Roman! I will be at the next SCD in October! Would LOVE to meet you there!
@@Whataboutit oh wow, sooo cool. I wrote "someday" because I won't be able to be there this year - but I'll be joining the livestream! Exciting times! keep it up!
My heat shield prediction?
There's still going to be some relatively significant damage to the heat shield, but the Starship will land relatively undamaged due to the backup ablative layer.
When knows? Perhaps "rapid reusability" will come down to "rapid heat shield refurbishment".
Hopefully SpaceX puts a bunch of cameras on the International Space Station so we can see it when it disintegrates on the way down. Be a sad day but would be a cool thing to see you though
Maybe they can put fish scale tiles on the re-entry facing surface and gather data on where the failing points are from the inside-out.
In fact, it might make for one last great scientific experiment by separating each module into different expendable high risk re-entry concepts.
The goal would be to see how close each module can get to the earth without failure and one gimbaled Raptor on each one in case of success.
Since the station is deorbiting over an area considered fairly safe, it seems worth the risk.
I love this idea, but I don't think there will be much to watch. This is the kind of thing I believe will go from 0 to 100 in a fraction of a second. Something like "now we have image, now we don't".
@sysbofh hey look at that... wait, where did it go.
Sad to dispose of the trash ? No attachment is good.
SpaceX literally and figuratively destroying the ISS, and NASAs entire model is so appropriate.
The flap heat shield pause and nervous smile killed me 😅😂😂😂
Yeah! Lol! His look there is priceless. 😂
Morning
Good morning!
When I worked in telecommunications, we tested new transmission products to destruction. We tested it until it failed. Over and over until the manufacturer got it right.
So many bots here… probably the first non-bot comment. TH-cam needs to do something about those bots.
Agreed! Thanks for being real!
@@BukuiZhao lol
@@BukuiZhao between the bot comments and the terrible AI channels, TH-cam is trending down.
Where are the bot comments?
@@bikepacker9850 scroll down and youll notice some with weird emojis, bot comments.
Of course SpaceX have been able to find out which parts of stage zero go wonky after a launch, and do which bits need to be made more robust and or protected. It’s yet another case of iteration being needed to establish what works best. They start out with a minimum viable system, and work their way up from there, not building any parts that are unnecessary.
Launch pad
Doesn't Earth have two summers? So, how can the Lunar summer be the same time as "Earth's summer"?
Mosty just a coincidence. Earth is tilted by about 23 degrees which causes the seasons and the moon has a tilt of 1.5 degrees, which causes less overall seasonal changes. This would still put the north and south pole of the moon in darkness for half of the year. 👍
@@NoobtooberMan He meant that's it's summer in December on the bottom of the planet that no one cares about.
Sometimes when I see the progress SpaceX is making.. it makes me wonder if at some point in my life an average person like me will get the chance to go to space.. It would be a real dream.
In the near future…. I see jobs being offered in space. Construction being the major employment, then jobs that support the construction workers… medical workers, food service… etc.
Sounds like Viper needs a GoFundMe!
Yes! My money is down...
I propose using the money we pay congress.
The satelites are dispensed in "landscape" mode - if they were dispensed in "portrait" mode the hole in the side of starship's side would be considerably smaller, improving structural integrity...
Well done WAI team
Seriously well done!
🙏❤️ Thanks!
18:11 Earths summer 😂 Sounds like some flatearth shit 😂
@@SalmonSnake80 🤣🤣🤣Yeah plus which summer there’s 2?
@@cab63868386you could argue for three - in the global south (that is, the bit of the globe that is south of the equator, not that other bullshit meaning), summer spans the new year.
SpaceX should put a large count down clock like old NASA one
18:12 Earth's summer?
🤣🤣🤣Which summer it has 2?
@cab63868386 considering the majority of the world lives in the northern hemisphere...
Reason they use the modified Dragon with Draco thrusters is because the ISS is big and flimsy, so you dont want as much thrust but you still want lots of impulse. If you used a Starship you'd have more than enough impulse in the RVACs, but you'd also have waaay too much thrust. The station would literally get ripped apart by the torque and some energetic event might cause debris to remain in LEO. Don't want that.
Still a chance it could break
10:50 Okay i know it’s confusing but that is NOT a booster, it’s a V2 ship aft test tank called TT16 the external stringers are for the can crusher 2.0.
12:19 to keep the booster from running away💀
Can Crusher is so Cool Dude . Love It !
Having a dedicated landing tower would make sense. No launch required equipment. If there is an accident, minimize loss.
You would be wasting a tower that you couldn't launch from
@@Wi2Low Nope, the other way around, you want another improved pad for more launches
@@Wi2Low Or they go with a hybrid approach, they build a tower and outfit it to catch and IF that works out they can add a launch table later.
That means you would not be rapidly reusable. The booster can't fly 3x per day if you need to switch towers.
A catch only tower may be useful for the second stage, but the booster would need launch infrastructure...
But the second stage will be built in greater numbers.
I kinda picture it as the booster ready to go in short order, and the second stage would be more like falcon 9 is currently.
Wow, your enthusiasm is contagious! I just found your channel and I love your content. I wish I had found this sooner!
Thanks Felix, I spit my beer in my lap when you spoke about Pez being a questionably flavored candy. 🍬
Another excellent show from Felix and the WAI team 🚀🍻
Yes. Felix that does make sense. Always very educational! Love your videos!
"Felix, is it summer on Earth? If so, in which hemisphere?"
Same thought. Moon summer, earth summer, makes no sense. Little flaw in a great video.
Arrogant northern hemisphere residents.
Concrete. Ridiculous. Some one suggested a tank of water for future use. That makes sense.
Thanks again for good stuff.
I think they should use a couple of Ships to test out transpiration cooling instead of tiles, but maybe the math works out to not make it worth while to even try. Really can't wait for Stoke's orbital tests.
It's also not easy to do in terms of engineering on very large surfaces.
I wonder if Stoke might be granted funding to retrofit separated modules. to test variances on their re-entry designs.
It was nice to see a video with no product placement in the middle. Just pure space stuff!
And I, Bruno, will dive 1000 feet. Into a block. Of Cement. But NASA calls it a "Mass Simulator". Which cost $450 MILLION bucks. Who are these people?
Corporate greedy politicians
“Who are these people ?”
Politicians. With Pork to dispense to their Contributers .
These people are Congress, not NASA.
@@PeteSty it is actually a block of gold pressed latinum. A ransom for our Alien Overlords.
They had a fully built rover that was planned to go to the moon and explore the south pole. Unfortunately it hit the 30% over budget limit and NASA was forced to cancel the rover and go with the "Mass Simulator"
Development and construction is so astonishingly fast it's mind boggling.
NASA and Boeing. What a match.
For those viewers who are a bit compromised at picturing just how tall the launch tower is when fully stacked, as I am, (other than to say its one BFTower), well if I convert it into units I can more easily picture in my mind, those 476 feet are equivalent to a stack of 95 six foot tall cheerleaders (standing on the previous cheerleader's shoulders) passing people/items up one at a time to get to the top. I would have said stacking football players but using tackles and guards anywhere above the bottom 5 levels and you risk killing or maiming someone. 😅
🤣 I should use that next time!
I'd bet that a Raptor engine, even at minimum thrust, would impart too much force on the ISS structure and cause it to buckle.
It would be great to see the next launch be a complete success, but I would expect further glitches with the heat shield on re-entry.
It's vital to consider the pros and cons of every issue...
So, what's the opposite of PROgress?
CONgress!
I hope spacex fails
@cafhead why?
@@snorman1911probably to own the libs?
your creative approach to problems is truly inspiring!
If NASA wants to send a bunch of dead weight to the Moon, let me suggest a gaggle of Secret Service Staffers. Just a thought....
5:34 never recognized the stairs construction outside the tower base to get up to the actual (outside) stairs of tower 1.
Someone got a fresh haircut. Looking sharp.
It's hot here in FL!
Shave it all..never look back
@@randomhobbies5796not like it grows back in 3 months
Great episode Felix. You're goofy, nerdy, and well informed, and I dig it all man. Keep the excellent content coming!
"The Lunar Summer occurs at the same time as Earth Summer", that depends on where you live! This is a funny typo.
Can you organize a petition for congress to extend the budget for the clips mission?
NASA always makes short sighted decisions
That’s the result of poor funding.
More like congress forces NASA into accepting politically based decisions.
Says a fool.
Like what? The ISS has a finite lifetime due to thermal cycling. NASA had nothing to do with the rover mission being cancelled. They were limited by Congress and are required to still make the launch. If you'd have listened to the video, Felix explained that.
Yeah, under funding government agencies, purposeful or not, leads to failure.
You are pulling ours legs with the title!
You know the "Channel Metrics" thing every. single. video. is getting a bit tiresome. Can't you leave that out once in a while?
@@bigk5203 agreed. Much needed break plz
Gotta promote the story.
Terraforming planets to make them livable for Earth life is the greatest statement humanity can make to the cosmos ..
Right now
Damn that thing is huge...
I think they should keep the ISS in space as a museum for future space tourism. Why not just park it somewhere high up so that future generations can look back on a piece of space history, when nations could set aside their differences for a common goal?
If they went up in altitude the ISS would become essentially unmaintainable, as current gen spacecraft like Cygnus, Dragon, etc. couldn't reach it. As you go up and aerodynamic drag decreases, space debris also increases. So if we raised the ISS higher it would be struck by debris fairly fast, especially as without resupply it would loose the ability to maneuver out of the way. So instead of a museum we would eventually have a heap of junk with holes like swiss cheese and a bunch of extra debris making space unsafe.
@@plainText384 isnt it weird as space travel progresses they can go less and less deep into space. moon 50 years ago? no problem. Moon today? cant do it. hmmm. Progress.
@DieselRamcharger Orion + SLS can go to orbit around the moon and will take people there in a year. The Chinese are also developing the long march 10 rocket and the Mengzhou capsule with similar capabilities, and are aiming to fly humans to the moon around 2029.
It's not so much that we can't do it as that we chose not to do it for the last 50 years. Rockets like SLS and Saturn V have very limited use outside of flying humans to the moon, while rockets like Soyuz, Falcon 9, or Atlas V are workhorses that are the right size to launch many other commercial and government payloads as well.
This is going to be a fun test flight. You know SpaceX has left some areas to burn through, some areas to test the ablative material, and probably some hijinks to do with the flaps and flap-hinges. SpaceX is always gathering more data for the next iteration so no way is flight 5 going to be boring, it's going to be gathering information and I bet something funky happens. Other news outlets will probably call the flight a failure, just like they called the last 4. Just look at all the progress SpaceX's Starship is making! It's exciting!
The Viper cancellation is like running a 1500 meter steeple-chase and falling flat on your face a meter before the finish line. Ridiculous!
I'm still waiting for the uproar when SLS is cancelled.
If the Starship is going to carry people into space then its going to need to add a lot of weight. This assumes that the FAA will ever certify another rocket without a human escape system.
There’s around 100 tons to play with on Block 2 and 150 on block 3. 💪
@@Whataboutit Do you think the FAA will let them fly, like the Shuttle, without anyway to save the humans when something goes wrong?
@@blueskies792indeed. If my tax money is going to fund it then it should have some kind of escape system.
Felix, be happy they are returnjng viewers. If they haven't joined by now,.asking isn't going to change their minds.
its so sad to see the ISS be deorbited. i always imagined a future where space travel was normalized and the ISS being preserved as a space station museum that future space travelers could visit and remember where we came from
If Axiom manages to build their station, initally adding modules to the ISS and then going their own seperate way, then, in a way, a part of the ISS will live on.
Im amazed at SpaceX!
Curious about how the new concrete base can support all that so soon….seems like it would need more time to cure.
First thought, they hit minimum cure time for the chemistry and thickness for the pad. Plus this is a static load and the delays between each section being added gives more cure time.
It was poured over a month ago.
I can’t wait. It’s gonna be 100% all the way ..!
I would like to find out more about the equipment that is used to move the large items (tower parts, starship, booster, etc). Wanting to know the whole lifecycle for launching this monster.
they are moved on SPMTs (Self Propelled Modular Transport)
Perhaps, if they have to send up a block of concrete, the least they can do is make it with a hollow space inside and a removable lid that could be used as the cornerstone for when we eventually start building a moonbase up there. Id say it could be engraved with 2028 but the way its all going, it might be 2058 or even 2128 before we start on any building on the Moon.
Great Video as usual.
Is there anything different with the new tower to deal with the flames below the tower? Flame trench? Water again? I don't think I have heard what this will be.
It’s true, once you’re 30 everything starts falling apart! 😂
😢
Yes the new layer under the new tiles is going to be the answer to the tiles falling off with all the vibrations and keeping them in place will allow the Starship to reenter without burning up, it does remain to be scene if it can be reused without time consuming repairs, I missed you Fielex, your enthusiasm is sorely missed when you are not there. Are you going down to Texas for launch 5?
This looks like the Fireball XL5. ❤
When they realize they are shoving the widest part of starlink out through the pez is when they turn it sideways where it's much narrower and doesn't need so much reinforcement on the ship.
How will you store the satellites?
@@lotuselansteve same way just dispense them in the narrow end.
watching this video Felix reminded me of someone, The Emperor Ming the Merciless from flash Gordon. i think we may have another "Luke I'm your father" moment coming up... lol
imagine if the heat shields were a sort of heat generator. Make enough power to sustain the first humans on Mars for a while
Waiting for a successful launch
If your merch was a bit cheaper I would probably buy it. No disrespect meant. ❤
@@keniken2514 if the merch was a bit more expensive, it would be more of a status symbol and people would vie to get their hands on it. Lol
Just a question, would spaceX consider trying to slow down the Starship re-entry by flipping the ship so that engines are forward and fire them to slow down? Instead of just doing what has always been done, try something different.
Not slowing it all the way down, mind you, just enough to save wear on the tiles
Can crusher is for doing what can crushers do, crush them for recycling... oh, wait, they're reusing, not recycling, never mind.
One of the main reason why Starship wasn't chosen to deorbit the ISS is probably because it may not be able to throttle low enough. The ISS deorbit vehicle will apparently fire between 22 and 26 draco engines at the same time, which will give it a thrust of around 9-10kN. A single raptor engine has over 2MN of thrust and simply can't throttle down anywhere close to 10kN. This is also why they didn't use SuperDraco engines or a modified Falcon9 upper stage.
The other reason for not using Starship is that it simply doesn't have a proven track record of reliability and that it uses cryogenic propellants, which are more difficult to use on this type of long duration mission.
SpaceX Makes me super excited to be alive in a world filled with crazed people
Easy, rename Viper as Mass Simulator
A mass simulator doesn't require maintenance or staff to maintain it and the parts of the rover are being disassembled for other projects.
@@filonin2 I understand that. My comment was more of a joke comment.
I have in my project to delete spaceengine bases to launch them. Thanks for your progression, space X and Virgin Galactic gave me more hope than copies from the past!
Starship would never have even been in consideration for the ISS de-orbit... it's just not a sensible tool for the job. It was always going to be something custom-built for a single mission, based on Dragon and a bunch of Draco thrusters. Similarly, the most likely non-SpaceX alternative would have been something based on Cygnus with extra fuel and thrusters...
Im dubious about spacex getting this design finished in time.
Instead of concrete that could at least send some material that might be useful for later missions.
The Starliner capsule might be able to deorbit the ISS.
It'll probably still be there in 2030 tbh
@@sander915 While I appreciate the sentiment, they're going to have to jettison it in the next few months, one way or another. It's currently occupying a docking port that will be needed for the next Dragon crew rotation flight.
14:09 This does not look like a retrograde burn...
The can crushed process is for the FAA to certify the booster
Best blooper ending "Budget, Congress!!!" Felix utters in disgust...😂
"at the same time as Earth's Summer".... Felix, there is no such thing as Earth's Summer. When it's Summer here in the Northern hemisphere, it is Winter in the Southern hemisphere. SO which of the two coincides with the one at the south pole of the moon?
It will be northern as Americans are notoriously northern hemisphere centric in their thoughts. They often forget that it is 6 months different for the half of the planet they don't live on. While quite common in everyday American's I expected Felix (being imo substantially above the average) not to let that slip through. I expect the time pressure to produce so many excellent videos on such a frequent schedule will mean the team, which is made of mere mortals like you and me, simply can't catch everything.
Hey Felix, Your videos are awesome and love watching them, I have a few questions can you answer them? I always see the mega bays and high bays in your videos I notice that there are windows at the top in these do you have any detail as to what they are or what's in them? Are they just viewing galleries or do they just let light in?
Also why do you think that they don't have solar panels on the factory or high bays, surely that's Elon's thing no?
Felix, Tower 2 most likely is being built as a catch and not as a launch tower. This is why there is not a quick disconnect around. I bet that that IFT5 will not attempt a booster catch if Tower 2 is not fully built, tested, and operational. Tower 1 must be protected.
Or maybe - Allow tower 1 to take the risk - Tower 2 is the future. Tower 1 may get replaced either way - or maybe just the launch mount.
In interview after Launch 4, Musk said he was not worried about the tower during landing because they have spare parts...
Why are they erecting scaffolding inside the Megabay? Surely, they could create vertically-tracking gantries?