SpaceX Starship Re-Entry and Breakup: 3 Render Simulations!
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- Опубліковано 20 тра 2024
- This is a representation of what Ship 28's re-entry would have looked like on Starship Flight 3. The first render is a multiview with all three viewpoints plus the webcast. The render includes onboard flap camera reconstruction, showing the angle of the flaps and the orientation of the vehicle in reference to the earth.
The other render is an exterior reconstruction shows a fixed viewpoint with the earth as a background reference to clearly show the overall orientation of the vehicle. The white line represents the direction of the force of drag on the vehicle.
The visual reconstruction is a shaded, fixed viewpoint showing what the entry may have looked like from a close up, exterior perspective.
Video produced and edited by TheSpaceEngineer - x.com/mcrs987
Video QC: Peekaboo - / colewzy
Production/Render Support: Emlyn - / emlynspace
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Timestamps:
00:00 - Re-Entry Multi-View
04:14 - Rendered view with heat visuals
08:30 - Fixed view
12:45 - Flap camera view - Наука та технологія
For it tumbling like that we have to appreciate how it gave us some great views of Earth.
It looked doomed while just flying in space. Spinning and rolling made it seem to me something important was not working. That first view with all three renders and the live ship was so cool. Thanks for sharing!
They did suffer from attitude control system failure, and I'm guessing that the first uncontrolled part of the reentry must have damaged something, which led to the failure of the spacecraft
@@andromededp5316 Certainly had some attitude problems
On to flight 4. Test learn and make improvements!
@@karlkarlsson9126 you spacecraft, like young people, are sometimes known to have bad attitudes. Both are prone to embarrass you in public.
Thanks, invaluable visualization, much appreciated
Great, but one more view is needed: "chasing camera", aligned with speed vector, facing where the ship is going...
This footage will probably be forever unique in spaceflight because of the varied angles of Earth and the shots of unintended bits of vehicle bearing the brunt of reentry, such as the engines.
And Flat Earthers still deny it's CGI XD
I mean, we see the crowd reaction of workers when they saw that HUGE bit flying before re-entry XD
What's encouraging is how long SS actually survived even while tumbling uncontrollably. It indicates that if they can get it under control and entering at the correct attitude maximizing use of the heat shields, then there is a much larger margin of error than with the Shuttle.
Its counter intuitive how, even with the atmosphere being turned into plasma, there's still so little pressure felt by control surfaces. Just goes to show how thin the atmosphere is up there and how fast that vehicle is traveling.
agree. during the plasma-wow phase , lasted 2 mins and 25km altitude, speed decreased only by 100KM/H 😱
Yeah. Once pressure entered the equation and joined heat it was over for poor Starship.
@@fabio72da yeah.. that's not what I would have expected. I'd like know what the explanation for that is. Clearly it isn't losing momentum as fast as I would have thought.
@@acasualviewer5861 mmmm, I think it is. The first heating is visible at 9:22, going 26719km/h and 101km altitude. It descends 17km, to 84km, in 1:33, and accelerates 40km/h to 26759km/h. Then it slows down to 26142, a reduction of over 600km/h, while descending another 17km, to 67km over the next 1:42, when it lost telemetry and presumably broke up.
Even in the first part, it is losing 56,000ft of altitude while only gaining 40km/h of speed. That's a lot of potential energy that was turned into heat. In the second half, it lost another 56,000 feet of altitude, while also losing 373mph. That's the same amount of potential energy dissipated, but with a significant amount of kinetic energy added. It seems to be losing momentum just fine in the upper reaches of the atmosphere.
What was surprising to me was the lack of attitude control. I would have thought they would have gained control as soon as the heating started. Contrary to popular belief, the heating and resultant plasma is from compression of the air, not skin friction. I would have thought that compression would have made the flaps effective and lead to better control of the vehicle. I do see that the roll and the pitch reversed, so maybe there was enough aerodynamic force to control it. ...maybe some flight control computers broke or something.
Can't wait for the next one!
@@acasualviewer5861 Just watch a F9 booster come down, falls like a spear until a few KM's then hits thick lower atmosphere and the effect is like hitting the brakes hard
Thank you for this RGV team! It was very difficult to visualize how starship was re-entering and if the heat shield was helping. This video clears it up. And wow! - the amount of heat the non-tiled side endured was actually quite impressive! Here's to IFT-4 making a soft splash down fully in tact!
Very nice, it makes it much easier to visualise what is happening
It was so hard to work out what was going on during the stream. This video gives the best insight so far. It does seem that Starship was trying hard to control it's presentation during descent. When I saw the stream it looked completely chaotic. Cleary Starship's control algorithms were struggling migthly all the way down. I assume that SpaceX learnt a lot.
The roll was quite obvious though, seeing that kind of told the tale it was about to be RUD - this render though is great for visualizing the details. They managed to get it upside down for some time, so they had a bit of success for a short wile - couldn't see that during stream..only now with render.
@@PeterKocic Yep. The roll was obvious but I hadn't noticed all of the other movements
The flaps didn’t seem to be responding appropriately to the changing attitude of the vehicle, possible actually damage, software glitch, or improperly connected hardware.
@@J7Handle the flaps dont work out that high up the only work inside the earths atomosphere.... they use reaction control thrusters .... didnt seem to be working, and word is the payload door test cause it to spin out of control.
The algorithms weren't the problem. They lost RCS control and the fins alone couldn't do anything to arrest the roll.
I can't Wait till IFT-4 !
Cool to see how it almost fixes its orientation
Exactly. It seems something happened and the flaps were trying to compensate right before RUD.
I wonder if SpaceX knew it was doomed and then decided to intentionally test it's ability to correct itself from an uncontrolled spin
@@Jadinandrews I don't think so. The plan was to survive reentry and splash down in the ocean horizontally at terminal velocity.
@@Jadinandrews well it's going to come down anyway, why not see what it can do and how long it will last.
@@Jadinandrews unless you meant that they purposely created an uncontrollable spin, in which case no. The spin was definitely unintentional.
Yes, nicely done. You can see that the ship was not being controlled at all. Even so, it shows how robust it is to have lasted as long as it did. I can't imagine the engines weren't pretty messed up after being used as a heat shield for a while. Number 4 will hopefully nail the re-entry.
I believe that for this speed regime the flaps move too aggressively🤔
Still, this would not have happened if not for the icy failure of the Everyday Astronaut's thruster system🤷♂
tim dodd delenda est :p@@TheGalacticIndian
@@TheGalacticIndianTim Dodd didn’t design that. He asked a question - and Elon decided to change it. Tim has no fault in their design choices
@@randywilliams7696why?
its just a joke!@@MomedicsChannel
"Did the primary buffer panel just fall off my gorram ship for no apparent reason?"
This is the captain. We’re having a little problem with our entry sequence, so we may experience some slight turbulence and then… explode. [Hangs up microphone]
@@protomake1349 Aww I don't wanna explode!
Oh we're definitely going to get on the ground
Are we crashing again Captain!....
I am a leaf on the wind?
Oh man massive thanks for this. Watch the launch live but couldn't figure out what was going on. Been waiting for a 3D simulation. Great work.
Thanks for the analysis that includes smoothing out the erratic changes in telemetry caused by signal losses. With your help, we can see that, although not successful, Starship was slowly becoming more stable in its flight. Great work.
Great video, very informative, Thank you RGV!!!
Need some powerful Draco thrusters to control that monster!!
Super cool! Amazing SpaceX!! IFT4!!!! Go Starship!!!
I suspect that the cold gas thrusters are still a viable technology, but something severely failed on this flight.
Brilliant work!
Crazy how Starship lasted that long going through the atmosphere with that crazy rolling!
kudos to spaceX, and amazing work for the simulator team!
Nice work RGV. Those synced renders are awesome. S 28 was in trouble long before re-entry interface. That roll was a killer that it couldn't recover from. It's amazing it didn't come apart when it was oriented tail first. On to the next test flight. Can't wait for the return to launch site. That is going to be something to see.
Amazing renders!! Fantastic work!!!!
Wow .. this provides so much in terms of perspective and understanding how it was manoeuvring / tumbling and its orientation during the reentry.
Fantastic work 👏
Awesome animation! Thanks! Makes the final part of the flight much more clear.
Excellent visualization (particularly the intermittent TDRSS interpolation) that essentially pretty much accurately recreates the attitude of the ship I had in my head after rewatching the live feed a few times, and confirms that though tenuous, the upper atmospheric drag actually WAS causing the ship to naturally self-orient with tiles windward by a minute or so into reentry! The ultimate breakup then was either caused by too much plasma damage to the aft engine bulkhead during initial reentry at around 2:00, OR possibly even due to incorrect forward flap orientation (down) starting around 3:00 causing too much drag at the front of the vehicle and too high of an angle of attack once maximum deceleration was reached in the deeper part of the atmosphere. Super exciting to see how all this is playing out.
With data from re-entry I bet they can fix that atmosphere entry trim no problem.. unless they need hot gas thrusters to provide more positive control
Thanks Tim Dodd??? lol
I'm pretty sure the cold gas thrusters were not working during the whole flight.
This will undoubtedly be invaluable data on the heating of various parts of the ship. Getting hit wirh plasma on the steal directly without exploding/ melting too much.
Also got a good amount of heat on the tiles directly.
That is sweet data!
It held together quite well for what it was subjected to.
Thank you for very clear animation that give me better understanding of starship reentry. Cannot wait for 4th Orbit launch
While everyone was clapping I was shaking my head during the live stream. No way it would survive.
4 is a charm, I hope.
The clapping isn’t a sign they think it will survive, it’s a celebration of how far they’ve come. They have clapped after previous Starship RUDs as well.
they were clapping at milestones not for it's survival, muppet.
Yeah man only you figured out the real outcome. Good for you!
I am not convinced they were even seriously trying reentry. The control surfaces were not doing anything like what I would have expected. It almost looked like they were being manually actuated rather than following any law. Possibly they were hoping to be able to just set it and it be passively stable, but it was too far off attitude initially to settle.
The other possibility is that they were getting data on many attitudes to validate models, particularly when plasma impinges on the engines. Hypersonic wind tunnels exist, but not at that scale. They may have decided to use it as a wind tunnel test.
Alternatively the control computer completely crashed and it was just a dead stick. Who knows.
@@agsystems8220 I believe the computer was a bit confused by the situation it was in because it was already spinning too much
Thanks for putting the reentry in basic terms!
Wow this was an incredible rendering of Starships re-entry! Wonderful job on this simulation thank you for sharing!
Talking Heads definitely have a canned routine that is disconnected from what is actually happening.
They certainly cannot report what is going on like Walter Cronkite or Chet Huntly and David Brinkley did back in the 1960s...seems every other word these eejits said was "...ah...". They need to relearn how to talk. 🙄
always like that
Yep. All hell breaks loose if they suddenly go off script. Like 99% of our so-called "newscasters".
Thank you RGV Team for all the great work you do. THese perspectives are very helpful for us laymen.
This is extraordinary work. Kudos.
Amazing work! I was exactly looking for the spacial reconstruction of the starship location during the reentry. No one would do it better! Thank you!
What looked like an attitude control problem that happened just after main engine shutdown seemed to get worse as the re-entry approached to the point it seemed to have no control at all during re-entry. Something must have gone badly wrong with the manoeuvring thrusters.
Maybe it has less fuel then thought, shot out it's liquid fuel and not gas, or there was an error and it kept correcting and wasting fuel, maybe stuck or slow valve causing it to shoot too much and then have to correct, lots of fuel wasted that way.
@@jessiejanson1528 The thrusters are using pressure in the tanks to function so my bet is there was a problem with venting the tanks leaving insufficient pressure for the thrusters. It is probably not a huge problem to fix.
After watching the entire flight a second time, I think there was zero thruster ability right from SECO onwards.
@@imconsequetau5275 Agreed, you don't see a thruster fire even once.
By the end, starship had nearly nulled out the roll and oriented pretty well. Not sure if that was random but to me that was pretty promising looking at the end.
I’m sure the team learned quite a bit (in addition to ensuring RCS is more robust).
Edit: looks like the last second it started to roll engines forward again. Started pretty quickly too. Strongly suspect the engine bay is where the disintegration began, if not explosion.
Any simulated orientation after the video cuts out should be taken with a heavy grain of salt.
@@leo_is_a_baka telemetry was still there. The simulations were based on that to a large degree I would expect, no?
Based only off a 2D representation of the orientation, which you should take with a grain of salt. Can't tell which side is facing which way, no flap animation, etc@@joefunk1611
@@joefunk1611 yes, but the telemetry doesn't show stuff like roll. It's likely that the steel side of starship was entirely exposed to reentry heating.
That was great work man, I was wondering if somebody was going to come up with this, thank you very much, really puts it into perspective
This is amazing. Exactly what I was hoping for when I was watching!
Wow, very incredible render! Thanks!
Thanks so very much for this.
The biggest flying object is a severe overstatement “flying” it was spinning and tumbling. They had no control.
So is a thrown rock, and it's flying too. When you try and change a definition to suit yourself you tend to just look like an even bigger fool.
Excellent work there 👍
This was well done 👍🏻
Great work!
Outstanding!
Brilliant video
it is excellent work! Thanks!
It's getting there. Very impressed with the Starlink live feed, and that flap cam hanging in there right up until the end. Looking forward to the next one. I'm even hoping to go down there and watch one this year... if they can get into a reliable launch schedule.
As I watched this live I thought the crowd and the presenters must know something I didn’t because all I could see was it was not only spinning and tumbling but also not slowing down the way it should have been doing. Great visualisation, which helps clarify just how much it was out of control.
Although there was plasma heating for minutes, the control authority seemed totally absent until the last couple seconds before RUD.
I suspect that the computer program was only relying on thrusters, which were not working.
That was amazing!
Top right quadrant made things clear to me. God bless whoever did that.
Thought i knew why SpaceX was cheering so hard after seeing that some hero autopilot or hero at mission control was using the flaps to try something. Seeing what it did was perform the re-entry bellyflop inverted is amazing, bravo on the reconstruction
It's trying to self correct on the fly from a position it wasn't expecting... inverted belly up. That computer was prob saying 🤷♂ what the hell do you want from me?
@@_mysilentblue2227 poor Starship, like the Machine dying in Person of Interest
This is cool
Nicely done ...
great vid. I was really strugging , during the mission. with ship 28 orientation.
Yo Guys. The Applause in the Audio are for you in Perfect Timing. Great Work. Much Appreciated
Good job guys !
Awesome
Thanks!
I'm so sorry S28. Pushing the boundaries in space exploration is so exciting yet so dangerous. You had to show us how to crawl so that we can learn to fly.
After the ascent burn was over, Starship wasn't stable at all. It picked up a rotation and whatever RCS system the ship is supposed to have didn't bring it under control at any time. So as you see it wasn't presenting the heatshield side of the ship forward and in fact was completely backward at one point. The flaps weren't controlling the ship much, if at all, which is hardly surprising, since there's not enough atmosphere up there to do that, even if it's ionising off the ship. I would expect the flaps to only be capable of making very small corrections at that altitude. Not to have to try to stop that much rotation.
Next Starship needs full RCS functionality to give the ship attitude authority. Then it might just stand a chance of re-entering correctly.
Good job RGV for bringing us this. It has helped us see exactly what Starship was actually doing.
I read somewhere that the rolling was caused by the propellant transfer demo
The roll control thruster, visible from the upper flap camera, never spurt gas. I think attitude control was completely absent.
They were lucky if the ullage thrusters at the base allowed the propellant transfer test to succeed.
awesome
it actually looks like they are having problems with the center of gravity\center of lift. Rendering the lower flaps useless and thereby losing a lot of control authority. It almost caught itself when plasma started. Not shocked to see this as theyve only tested this in freefall. Hypersonic airspeed does crazy things with the balance/controls. Maybe some bigger header tanks to balance things out will help.
They emptied the header tanks as part of the propellant transfer test. Might be fine otherwise.
And I thought the LOX header tank was being *_filled_* from the main tanks.
Great Job 👍
They better nickname the first successful ship to orbit and back enterprise
Impressive it lasted as long as it did considering it was hitting the engines full force. They’ll sort that next time for sure. Great work!!
Perhaps SpaceX Starship mission profile should have included one orbit to allow for a sanity check before reentry. Spectacular mission but seems to have place craft under maximum stress without allowing systems to normalize. Fantastic overall design and mission accomplishments
This outcome is overall a positive one. If instead the failure had left the vehicle unable to control its reentry position, and deorbited over Belize, that would have made it very, very negative.
Insane to try to put it in orbit until you've proved the engine relight is working. In the actual flight the excessive roll prevented the engine relight so if it had been in orbit it would be the biggest piece of space debris ever. They shouldn't try orbit until several engine relights worked perfectly.
It didn't manage the engine relight, so it couldn't do 'just one orbit'. As you can see, reentry produces massive heating well before significant slowing, so you really don't want to be trying to come in using a decaying circular orbit. Even if you could control it your vehicle would cook before slowing much. You want to get down to the thicker atmosphere quickly to reduce heating.
It had to be suborbital to guarantee a safe reentry location. Given they didn't manage the relight the next flight will too.
Not safe to enter a stable orbit before they can fire engines and de-orbit to avoid becoming space junk
@@sja45ukAt that altitude it wouldn't even be space junk, it would reenter in some months or weeks, the problem is you wouldn't know where
Amazing work RVG! 46k views and should have 46k likes. Thank u
Do you guys recall the Soyuz launch failure where a booster penetrated a central propellant tank on separation? The capsule successfully escaped and made a dramatic ballistic reentry. During this high drama the NASA announcer droned on reading her script, oblivious to the unfolding events that we could see and hear.
Soyuz MS 10 I believe. That was in 2018
Its not NASA its spaceX
@@rodrigolefever2426 To help you make the connection; As the SpaceX Starship tumbled out of control on the screens we were all watching, glowing plasma licking the bare steel, the SpaceX media crew stuck to their cheerful script.
This is extremely helpful! Its amazing how much it withstood actually, this is a positive reflection on the ship. Wish spacex would use all of their data to show things like you have here, curious to know how tou calculated its movements. Is it just buy comparing it to earth?
Lavoro magistrale di rendering 👏🏻
Quando ho visto la Starship girarsi nella direzione di rientro con la parte dei razzi direttamente verso il davanti e prendersi tutta la forza dell’atmosfera contro e quindi “bruciando” assieme al plasma, ho pensato “ora esplode”…e invece nulla, ha resistito ancora e ancora 😅💪🏻
Una cosa che non mi è chiara invece è come mai tenessero i flap del muso aperti e quelli della coda chiusi, mentre la navicella procedeva in “retromarcia”, mi viene logico pensare che sarebbe stato meglio chiudere quelli sul muso e aprire quelli in coda per permettergli la rotazione corretta ed abbassare il muso!
Comunque sia tanta, ma tanta roba vedere tutto ciò 😍 e sicuramente avranno preso una marea di dati fondamentali….go SpaceX, go Starship 😈🚀💪🏻
The flaps have almost no control authority during the entire video sequence. The computer was programmed to rely on the thrusters, which were "kaput".
The upper left view, I've not seen before. Suggests a crazy, random, constantly changing Starship orientation to the tenuous hypersonic blast?
I think it actually looked much more controlled in the animation, the controls were doing 80% of what was needed. Just a little tuning and voila!
If these renders are accurate, the control movements of the flaps did match what would be needed to correct the reentry angle.
I noticed that (seemed to at least mostly be true) too. But at times they seemed to be odd. Left me wondering if it was also trying to use the flaps to guide its trajectory not just its attitude. To steep a descent, and it burns up, too shallow a descent, and it bounces. Though, I don’t think it had enough kinetic energy to bounce; IIRC, they were confident it would land in the ocean whether in controlled flight or after a RUD. Leaves me without any firm conclusions.
Is Starship first stage don't have cold gas thruster ?
SpaceX continues to be kerbal as hell and re-enters the atmosphere sideways.
rotisserie starship
Their gas thruster feed of the main tank were crap they need the hypergolic thrusters those always work
Would contradict "The best part is the no part" paradigm that Elon teaches though. Can he find a quick fix for IFT4 ?
Contradicts the starship design philosophy. Starship is a cheap rocket that they are working very hard to make fly, as opposed to the usual approach of taking the easiest path to a working rocket and then making it cheap. Hydrazine thrusters are not cheap, due to handling considerations. If a cheaper solution exists that is harder to get working then the philosophy says they should go for that.
"Easier solutions exist" is not a comment relevant to the starship program.
The camera footage for the next flight when it DOES reentry it in a controlled manner will write history!!
impressive how it was being torched by the upper atmosphere and was barely slowing
While I appreciate all that was achieved by the flight, the wild cheering as the ship was tumbling toward a cataclysmic end has a cult-like feel to it. It will be interesting to see what failed.
It is good to get live video during re-entry! Kudos to the Starlink terminals! What the video means is the reason they are there. Where are they? Is it 1 or many? Where are they located and where are they pointed? Can the video be interpreted to present flow orientation to the Starship? Help!
Also saw a similar video on another channel. I made this comment: I wish you could add to the animation a second Starship flying along side, but that one will not turn and tumble but rather fly like it is supposed to, so we can learn and compare. Many of us do not understand what we are looking at without the relative motion of another object nearby.
The big story here is the camera surviving all of that heat for so long.
People seem to cheer louder when StarShip started to points its engine into the plasma.
Announcer say "Heat shields do their work" when Starship rotated so much that they were no longer taking the brunt of the reentry heating. Instead it was the engine being blasted by plasma, then the unshielded section.
So awesome! Thx!
I wonder if the thrusters were still pushing on the descent. If not it means the flaps could not control the ships movements at hypersonic speed
Very interesting and revealing. I wonder if the attitude data used to make these videos is from telemetry or just inferred from the imagery. It's clear that there was a major malfunction of attitude control. And that exposed non-shielded portions of the ship to re-entry temperatures.
From what I can see, even while it entered with a rotation in the atmosphere, it should have been possible, by using the flaps, to orient itself and keep the correct attitude throughout the entry. Was a hell of a "pressure" to lean on for adjustment. Somehow, I don't see those flaps adjust too much and are not moving correctly, corresponding to the ship position.
Very Pro .
Did the front control surfaces fail to lock into place? Is that why it rolled and tumbled?
What happened to the attitude adjustment thrusters? Was the expectation that the flaps would be the only control items for the "Starship? RGV, thnx for sharing.
I'm pretty sure that thrusters were not working at all. No control after Engine Cut-off.
Excellent. Idea to be better: could you add to a diagram an arrow, scaled by amount of force, showing the audience the force Starship is exerting to change its roll and orientation. So we can understand where in the flight it might be helping vs hurting itself with the flaps and gas thrusters vs. having no contol authority at all
It appears to me that they could not keep the tiles surfaces taking the brunt of the friction. The engines that were expected to restart must have been damaged by the high temperatures. This could have been caused by something as simple as a fin not operating correctly. Perhaps the motors were supposed to fire when the ship maintained the nose up attitude and failed for some other reason, but when I saw the plasma glowing where the engines were I was pretty sure they would not fire back up. Cars used to suffer from something called "vapor lock" in the fuel became too hot before it reached the carburetor or injectors.
Thinking about the door for future satellite delivery, if it did not close completely it would have influenced the aeronautics of the ship.
This was the most Kerbal thing I have ever seen outside of the game
Well done for getting into space and collecting important data. looks like on return it could not maintain the critical angle on re entry. To tackle the heat. at times turning onto the rear and even the unprotected sides. Think its supposed to hit heatshield side at about 40 degrees or something and maintain through upper atmoshere
are there no attitude controls for reentry?