Beautiful. This is why all re-ignitable rockets perform an ullage maneuver using thrusters before igniting, so the LOX and propellant is forced to the bottom of the tank.
@Pretentious Bear In rockets the fuel and oxidizer are both in liquid form, and float around inside their tanks due to microgravity weightlessness. Since the pumps that pump the fuel and oxidizer are usually at the bottom of the tanks, some slight forward thrust is needed to force the liquid fuel and oxidizer to the bottom of the tank so they can be pumped into the rocket engine. This maneuver is called an "ullage maneuver".
@@user2C47 The Merlin engine is an open cycle, gas generator engine. The LOX and RP1 propellant still has to be moved to the bottom of the tank in order for the turbo pump to operate correctly and maintain pressure in the valves that feed the turbo pump, so an ullage maneuver is still required for proper ignition.
Not the full story bro, the biggest problem is actually oxygen turning vaporous after engine cutoff, basically without ullage motors or ullage maneuvours the engine would blow itself up because the pressure is all wrong. It's more about keeping pressure than having anything at the bottom of the tank, although that's still a key factor of pressure
Amazing to see this LOX view! To my older eyes this was always theoretical, a view this vivid and crisp from a vehicle underway is pure purple magic :) Thank you! Jim M.
You can see that the oxigen molecules have loose bounds between them due to being an apolar molecule, so they don’t stick together as much as for example water would
Height of a tank 47m Dia 8.5m Fuel used LH2 (liquid hydrogen) & LOX (liquid oxygen) Fuel it can have : 7,70,000 liter kerosene & 12,00,000 liter of LOX Cost of the fuel : 200k $ Fuel burnt in a second at lift off : 4989 liter Where does space start 100 km (62miles) from the sea level (karman line) That's awesome amount
@@PerfectInterview Dragon, the spacecraft, uses Draco thrusters (and superdracos on dragon 2) which burn dinitrogen tetroxide with monomethylhydrazine. It’s the Falcon 9 launch vehicle’s Merlin engines which burn RP-1 and LOx in both its first and second stage, and it’s the second stage LOx tank you see here. Also, based on the dimensions VloggeR gave, they must have found some specs for the Space Shuttle External Tank, though the fuel volume they gave are consistent with the kerosene and liquid oxygen they’ve stated there. Dunno what that’s from, could be the right rocket.
Definitely not a rocket scientist, but if You listen You can hear the SECO callout (second engine cut off), so at that moment the Upper stage Will stop accelerating and the LOX Will not be forced to the bottom of the tank anymore
It sounds fun but it'd be extremely dangerous, you're likely to drown. Without gravity, you can't float to the surface. If you managed to swim to the surface, water would stick to your nose and mouth without gravity to pull it away from you. You might have a chance to blow it away but any water on your face and neck would be looking to evenly distribute across the surface of your body, including your mouth and nose. Once you expelled all your air, you're now stuck with a head full of water.
Why did it stay liquid? When the pressure dropped shouldn’t it have boiled into gas? They have enough helium to keep the pressure up in that huge tank?
Amazing to see fuel and or oxidizer inside while in flight. Good video. 👍 Floating cryogenic oxygen. Isn't there also helium that's released into the tanks to keep them pressurized?
@@gliderwickid Still doesnt answers the questions.. how will it deaccelerate if the fuels are still floating in droplets lol.. U gotta reignite the rockets to deaccelerate it.
@@merxellus1456 air resistance is slowing it down quite heavily. That forces the fuel down to the bottom of the tank. Even without the engines on it is decelerating at quite a good rate
@@Fredrikaolsen Apparently someone recorded it and put it on youtube! At least 30 minutes of it: ruclips.net/video/G-neUXd-8bw/видео.html and the full set of Carbon Based Lifeforms before him as well: ruclips.net/video/pnXipRdb9ps/видео.html You can see Magnus (Solar Fields) taking over the set at the end of CBL in the last few seconds.
@@GerbenWijnja god damn, man😱I really wish I was there! CBL and SF got me in to psybient music. Some of my most life changing experienses have unfold listening to those guys. And shoongle of course. Space out🚀
@@GerbenWijnja lol I agree 1000%. Got to see STS-8, the first Shuttle night launch, and STS-135, the last Shuttle launch. Was on the causeway for that launch, and it was spectacular. But the STS-8 launch was a different animal for some reason. We drove over early in the afternoon and went as far as we could go. (We got to the gate, pulled off in the grass, and commenced tailgating. We didn't have a pass, but we were the first in the grass!). Later, after it had gotten dark, cars were parked in the grass on both sides of the road as far back as you could see, and the lanes of traffic going through the gate were backed up pretty far, too. In one of the backed up cars, a guy leaned out the rear window and hollered at us, "You guys want a pass? Got one we don't need!" It was hell yes/pack it up/cut in line/ and away we went. We drove a good ways before we were guided to a parking spot. It was dark, I wasn't driving, it was pre-911 cautions and restrictions, and to this day I can't figure out where we parked exactly. I do know it was closer than when I saw the last one from the causeway, which was as close as the public could get at that time. (You also had to pay dearly for it, and get there on a bus!). When that shuttle lit off, it got so bright I swear you could pass an eye exam from 5 miles away. And this was around 2 in the morning. Then the sound hit you. And continued to hit you. And It. Was. Awesome! Not like "That was awesome, dude"! More like an "Oh my God-What have we done-I has been struck by Awe"- some. (And I swear, again, this time for real, that thinking about this after 37 years or so the hair on both of my arms is standing up. No joke!) I couldn't look at my friends on account of my eyes were all welled up. I couldn't have said anything anyway, because I couldn't talk. All I could do was stand there, and watch it, and wonder how in the hell do those guys have the balls to strap in and fly that thing. There's the loud roar it makes that shakes your clothes and hair and guts. And there's a ripping, crackling sound above that. It sounds like it's actually ripping, or tearing the atmosphere of the planet, in an unfixable way. You can sort of hear it on some launch videos with good audio. But it ain't even close to what I heard that night. I don't know of any word, or words, that can describe that whole thing. I do know I will never forget it. Wish I could see a Saturn V go! So yes. As loud as possible + a little is just right.
That's an interesting question. After some googling I found this answer on Quora: Gaseous oxygen is colourless because all light in the visible range is reflected/re-emitted by gaseous oxygen. It doesn’t absorb any of it, so we just see straight through the gas (transparency). The same goes for, say, glass. But when the oxygen forms a plasma, liquid, or solid, all the atoms get reconfigured and this changes what wavelengths of light it will absorb. They appear pale blue because they’re reflecting/re-emitting light of a pale blue wavelength, and absorbing all the rest. What determines which wavelengths are absorbed or not corresponds to the gaps in energy levels of the atom/molecule, which is why reconfiguring the atoms into a solid/liquid/gas/plasma changes what wavelengths are absorbed - it changes the allowed energy levels.
@@GerbenWijnja Dumb question here, as it seems you have a perfectly reasonable answer. Isn't it completely dark inside the tank? So the color would come from whatever the color of light they are using to illuminate the inside for making the video possible?
@@jetmech9287 It is, kind of. Oxygen in a liquid state absorbs green and red light (in two different absorption bands), so it looks blue. It is better explained here: www.quora.com/What-are-the-reasons-why-liquid-oxygen-is-blue
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
Beautiful. This is why all re-ignitable rockets perform an ullage maneuver using thrusters before igniting, so the LOX and propellant is forced to the bottom of the tank.
@Pretentious Bear In rockets the fuel and oxidizer are both in liquid form, and float around inside their tanks due to microgravity weightlessness. Since the pumps that pump the fuel and oxidizer are usually at the bottom of the tanks, some slight forward thrust is needed to force the liquid fuel and oxidizer to the bottom of the tank so they can be pumped into the rocket engine. This maneuver is called an "ullage maneuver".
@@brabanthallen Yes, otherwise gas bubbles will get into the feed pumps which would result in a RUD (big boom)
@@brabanthallen Pump appears to be in the engine for Falcon.
@@user2C47 The Merlin engine is an open cycle, gas generator engine. The LOX and RP1 propellant still has to be moved to the bottom of the tank in order for the turbo pump to operate correctly and maintain pressure in the valves that feed the turbo pump, so an ullage maneuver is still required for proper ignition.
Not the full story bro, the biggest problem is actually oxygen turning vaporous after engine cutoff, basically without ullage motors or ullage maneuvours the engine would blow itself up because the pressure is all wrong. It's more about keeping pressure than having anything at the bottom of the tank, although that's still a key factor of pressure
Wow all the droplets are quite magical.
*Scientific
@@arthurr5538 how about mesmerizing instead of magical?
@@emike09 mmh, yeah sure
Seems like that would be a problem. How much fuel didn't make it to engine?
ruclips.net/video/WxYH5CXbpYA/видео.html
This brought a tear to my eye. Never thought my entire life I would ever get to see a Lox tank view.
I hope your life is complete now. :-)
Look up Saturn V1B from the 60s they have a fuel tank camera
ruclips.net/video/fL-Oi9m2beA/видео.html
😂😂😂
Amazing to see this LOX view! To my older eyes this was always theoretical, a view this vivid and crisp from a vehicle underway is pure purple magic :) Thank you! Jim M.
Beautiful purple lox rain.....
Wish they would show more of these. So awesome.
This is cool. Really, really cool.
Nice video ☺️.
Also, the beats in the background video gives me Minecraft flash back.
Next up: the same video from inside a starship
Would be interesting to see starship's LOX tank view during it's belly flop and upright flip maneuver.
That’s for sure.
sadly header tanks are used for that and its pretty much not possible ot put one in there
Ugh this is soo beautiful
I Wish i was up there with them That was a Great show "GO SpaceX"
Lovely video! Thanks for putting it together!
And let's not forget thanking the cameramen, risking his life inside this tank for capturing these amazing images!
You can see that the oxigen molecules have loose bounds between them due to being an apolar molecule, so they don’t stick together as much as for example water would
I don't know what's going on but it's beautiful and the whole idea of how chemistry is visually
Me: watches in 144p
Also me : yeah so beautiful
Elon Musk on the loop at 0:25.
More like 0:26
This is awesome, also at 1:33
@@egamersmk771 gosh what an eternity you had to wait
@@djkamilo66 yeah it was so long, a whole 1 second
@@egamersmk771 1 trillion picoseconds.
Height of a tank 47m
Dia 8.5m
Fuel used LH2 (liquid hydrogen) & LOX (liquid oxygen)
Fuel it can have : 7,70,000 liter kerosene & 12,00,000 liter of LOX
Cost of the fuel : 200k $
Fuel burnt in a second at lift off : 4989 liter
Where does space start 100 km (62miles) from the sea level (karman line)
That's awesome amount
Dragon burns Rp1 kerosene and LOX, not LH2.
@@PerfectInterview Dragon, the spacecraft, uses Draco thrusters (and superdracos on dragon 2) which burn dinitrogen tetroxide with monomethylhydrazine. It’s the Falcon 9 launch vehicle’s Merlin engines which burn RP-1 and LOx in both its first and second stage, and it’s the second stage LOx tank you see here.
Also, based on the dimensions VloggeR gave, they must have found some specs for the Space Shuttle External Tank, though the fuel volume they gave are consistent with the kerosene and liquid oxygen they’ve stated there. Dunno what that’s from, could be the right rocket.
@@ryanrising2237 Gotta respect the names of hypergolic fuels
@@ValMephora i may have pushed up my glasses and snorted when typing that
@@ValMephora lol "With a name like that, it's gotta be bad!"-(ass)
We need a high resolution video of StarShip tanks for a screensaver.
awesome idea!
OMG. Huge respect to the camera man for holding on tight under extreme acceleration and cryo temperatures. RESPECT++
this is why ullage thrust is important
Wow! They even played music in that tank!!
LOX is really neat looking in zero G
00:49 Why is the change so abrupt ?
Definitely not a rocket scientist, but if You listen You can hear the SECO callout (second engine cut off), so at that moment the Upper stage Will stop accelerating and the LOX Will not be forced to the bottom of the tank anymore
@@Flintcoco Okay ! Thanks a lot, what you explains makes great sense.
@@TwoonyHorned happy to help
There was 45 seconds that elapsed between the two frames. In that time, the SECO confirmed and the feed was briefly lost.
The upper stages of a rocket is accelerated quite a bit so that's an insane shock for the fluid
this video shows very well why orbital refueling is a very hard thing to do
Cool
Imagine swimming/diving in zero gravity - instead of rising to the surface you'd swim to one of the sloshlet bubbles
It sounds fun but it'd be extremely dangerous, you're likely to drown. Without gravity, you can't float to the surface. If you managed to swim to the surface, water would stick to your nose and mouth without gravity to pull it away from you. You might have a chance to blow it away but any water on your face and neck would be looking to evenly distribute across the surface of your body, including your mouth and nose. Once you expelled all your air, you're now stuck with a head full of water.
Amazing views
Don't doubt your vibes
The self landing of falcon 9 would've capped off this vid perfectly
The booster crashed on this mission
Why did it stay liquid? When the pressure dropped shouldn’t it have boiled into gas? They have enough helium to keep the pressure up in that huge tank?
The pressure never drops. Those black bottles on the sides of the tank release helium to keep the tanks pressurized
Amazing to see fuel and or oxidizer inside while in flight. Good video. 👍 Floating cryogenic oxygen. Isn't there also helium that's released into the tanks to keep them pressurized?
Yes otherwise the O2 would turn into vapor. The helium isn't visible and it's condensation point is even lower than the one of oxygen
@@ValMephora a question.. How will the floating fuels get to the main engine?? During landing burn..
@@merxellus1456 before the landing burn the rocket is decelerating due to drag in the atmosphere. That will force the fuel down in the tank.
@@gliderwickid Still doesnt answers the questions..
how will it deaccelerate if the fuels are still floating in droplets lol..
U gotta reignite the rockets to deaccelerate it.
@@merxellus1456 air resistance is slowing it down quite heavily. That forces the fuel down to the bottom of the tank. Even without the engines on it is decelerating at quite a good rate
Soo Amazing😯
So how do they use the liquid oxygen if it’s floating around in the tank?
With an "ullage maneuver", see brabanthallen's comment and replies below.
Solar fields rock
Yeah I saw him performing at the Psy-Fi festival in the Netherlands. It was awesome.
@@GerbenWijnja Must have been epic
@@Fredrikaolsen Apparently someone recorded it and put it on youtube! At least 30 minutes of it: ruclips.net/video/G-neUXd-8bw/видео.html and the full set of Carbon Based Lifeforms before him as well: ruclips.net/video/pnXipRdb9ps/видео.html You can see Magnus (Solar Fields) taking over the set at the end of CBL in the last few seconds.
@@GerbenWijnja god damn, man😱I really wish I was there! CBL and SF got me in to psybient music. Some of my most life changing experienses have unfold listening to those guys. And shoongle of course. Space out🚀
They need to come up with a bladder that can withstand cryo temps.
well, take that flat earthers :)
Everything they don't like is "cgi"
why no baffels?
Mimana มิมานะจันทราเหันไหม
Fun fact, LOX is a clear, pale blue in colour.
I was listening to this on headphones until the rocket was about to take off.
R.I.P my ears >:’u
A rocket launch should be as loud as possible. ;-)
Gerben Wijnja what did u said? I don’t hear you xd :’u
@@GerbenWijnja lol I agree 1000%. Got to see STS-8, the first Shuttle night launch, and STS-135, the last Shuttle launch. Was on the causeway for that launch, and it was spectacular.
But the STS-8 launch was a different animal for some reason. We drove over early in the afternoon and went as far as we could go. (We got to the gate, pulled off in the grass, and commenced tailgating. We didn't have a pass, but we were the first in the grass!). Later, after it had gotten dark, cars were parked in the grass on both sides of the road as far back as you could see, and the lanes of traffic going through the gate were backed up pretty far, too. In one of the backed up cars, a guy leaned out the rear window and hollered at us, "You guys want a pass? Got one we don't need!" It was hell yes/pack it up/cut in line/ and away we went. We drove a good ways before we were guided to a parking spot. It was dark, I wasn't driving, it was pre-911 cautions and restrictions, and to this day I can't figure out where we parked exactly. I do know it was closer than when I saw the last one from the causeway, which was as close as the public could get at that time. (You also had to pay dearly for it, and get there on a bus!). When that shuttle lit off, it got so bright I swear you could pass an eye exam from 5 miles away. And this was around 2 in the morning. Then the sound hit you. And continued to hit you. And It. Was. Awesome! Not like "That was awesome, dude"! More like an "Oh my God-What have we done-I has been struck by Awe"- some. (And I swear, again, this time for real, that thinking about this after 37 years or so the hair on both of my arms is standing up. No joke!) I couldn't look at my friends on account of my eyes were all welled up. I couldn't have said anything anyway, because I couldn't talk. All I could do was stand there, and watch it, and wonder how in the hell do those guys have the balls to strap in and fly that thing. There's the loud roar it makes that shakes your clothes and hair and guts. And there's a ripping, crackling sound above that. It sounds like it's actually ripping, or tearing the atmosphere of the planet, in an unfixable way. You can sort of hear it on some launch videos with good audio. But it ain't even close to what I heard that night. I don't know of any word, or words, that can describe that whole thing. I do know I will never forget it. Wish I could see a Saturn V go! So yes. As loud as possible + a little is just right.
@Everyday Astronaut
These are too big to be droplets... I'd call them splashlets or sloshlets )))
I wonder why oxygen can continue to exist as a liquid inside a tank at a temperature higher than the vaporization point and a low pressure.
Shoutout to the cameraman who shot this video
Can someone explain why its purple?
That's an interesting question. After some googling I found this answer on Quora:
Gaseous oxygen is colourless because all light in the visible range is reflected/re-emitted by gaseous oxygen. It doesn’t absorb any of it, so we just see straight through the gas (transparency). The same goes for, say, glass. But when the oxygen forms a plasma, liquid, or solid, all the atoms get reconfigured and this changes what wavelengths of light it will absorb. They appear pale blue because they’re reflecting/re-emitting light of a pale blue wavelength, and absorbing all the rest.
What determines which wavelengths are absorbed or not corresponds to the gaps in energy levels of the atom/molecule, which is why reconfiguring the atoms into a solid/liquid/gas/plasma changes what wavelengths are absorbed - it changes the allowed energy levels.
@@GerbenWijnja Dumb question here, as it seems you have a perfectly reasonable answer.
Isn't it completely dark inside the tank? So the color would come from whatever the color of light they are using to illuminate the inside for making the video possible?
подскажите что там за водичка?
It's not water. It's liquid oxygen.
@@GerbenWijnja thank you very much
Dam
Anybody else hear David Hayter shouting "LIQUIIIIIIIIIIIIIIIIIIIIID"?
Looks like Elon DNA 🧬
Say what you want about Elon... SpaceX s#it is cool AF
If you put water in a metal bucket, you get the same view.
If your water is blue/purple, you'd better call the water company!
@@GerbenWijnja Well, LOX isn't blue/purple, so....
@@jetmech9287 It is, kind of. Oxygen in a liquid state absorbs green and red light (in two different absorption bands), so it looks blue. It is better explained here: www.quora.com/What-are-the-reasons-why-liquid-oxygen-is-blue
Get out of here Obama!
gaslight people since 2002