LIVE! SpaceX Starlink 9-3 Launch
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- čas přidán 10. 07. 2024
- LIVE! SpaceX Starlink 9-3 Launch
#spacex #starlink #falcon9
Watch LIVE as SpaceX launches another batch of Starlink sats aboard Falcon 9.
Pad : SLC-4E
Location : Vandenberg Space Force Base, California, USA
Rocket : Falcon 9 Block 5
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wonder why we have commentators when they do not truly notice second stage working abnormally, or adding any extra info. Just repeating what everyone can see is not of any value...
Just like CNN
You'd think that someone who regularly watches and comments launches would be able to recognize something going so obviously wrong, even if they don't have enough domain knowledge (which is pretty clearly the case here).
Love watching the ice fall off in instantly shatter behind the engine thrust
That is not a good thing because it caused the second stage to go RUD.
@@foxmccloud7055 yeah I just heard about it don't know if it was the ice or a leaking hose still waiting for update
@@foxmccloud7055 Second Stage never reached orbital velocities, because of the leak
Thank you for the coverage!
I love the central California coast. It can be 105 here and 65 and foggy at the coast.
I just love this stuff...
cool
It seemed like a lot more venting and ice shedding on the 2nd stage than I have seen previously.
It was, it blew up on re-light.
LIFTOFF! 13:29
TY
Looks like they had an oxygen leak on the second stage, definitely something abnormal. For one thing the oxygen vents down by the upper part of the engine, there's two one on each side to cancel out any "thrust" from the expanding venting oxygen vapor, was venting the entire time from startup of the M-Vac. They typically build oxygen "frost" as the oxygen vapor expands out in the vacuum of space and this expansion (per Boyle's Law) causes the gas to cool and form frozen oxygen "frost" the vent outlet, which grows into a "frost-sickle" or "snowball" of frozen oxygen that periodically will break away and drift off away from the vent, sometimes dropping intact onto the upper part of the engine just above the "snail" of the turbopump exhaust duct which tapers around and encircles the upper nozzle of the M-Vac engine. BUT at 4:06 in the flight (about 17:44 in the video timer) one can see the loose mylar insulation around the base of the thrust structure and top of the engine, which is normally slightly loose and "billowy" suddenly INFLATES from the inside, indicating it was being blown up like a balloon from internal gas pressure-- obviously from an unplanned leak... It's easily visible by 4:12 in the flight (17:50 on the video timer) that the mylar heat reflective insulation blanket is inflated from inside like a balloon and stretched tight from internal gas pressure. By 4:14 after launch (17:53 in the video timer) there are visible droplets or particles of frozen oxygen appearing visibly flying past the insulation, illuminated by the glare of the sun. They're WAY too high for this to be frozen water or frost forming on the stage; usually by this point in flight frost forming on the tank prior to liftoff has all been shaken off or blown off by the slipstream in flight, or evaporated by the heat of air friction passing through the lower atmosphere (which heats up the exterior of the rocket, up to a couple hundred degrees or so particularly on the nosecone). Besides, water vapor frost would NOT suddenly inflate the mylar heat blanket insulation around the aft end of the upper stage thrust structure from the INSIDE; it never has on any previous flight.
By 4:21 in the flight (18:00 on the video timer) frost is visibly forming OUTSIDE the mylar insulation... a small one is forming visibly just above the glare of the sun shining over the top of the M-Vac engine upper end, and another larger one is visible just at the bottom corner of the screen, growing rapidly. They're shedding droplets most likely of condensed oxygen-- remember as a liquid phase-changes from liquid to gas and expands it absorbs heat (Boyle's Law) and in so doing "refrigerates" itself and everything around it, as the heat it absorbs comes from those things around it. As it cools, some freezes into a solid which then forms a sort of "straw" or channel which contains it til it reaches the end, where it rapidly expands and vaporizes, absorbing heat and adding more frozen material to the end, making the "straw" get longer (sorta like how a lava tube forms in solidifying lava, which insulates the lava in the tube and allows it to stay liquid and keep running downhill within the tube til it runs out the end and cools). This is how the "snowballs" of frozen oxygen form on the vent outlets. The fact that it's leaking and forming "frost" or snowballs elsewhere is a definite sign of a serious leak. It's leaking LIQUID oxygen, not vapor, because it's spewing DROPLETS of liquid oxygen, superchilled liquid oxygen, which are visible dribbling off behind the stage as it is rocketing toward orbit. Because it's super-chilled liquid, it cannot absorb enough heat in the vacuum to vaporize into vapor (gas) any longer...
By 4:26 after launch (18:05 in the video timer) there's a virtual shower of LOX droplets visible down in the RH lower corner of the screen, and a rapidly growing frost-cicle of solid oxygen, formed as the droplets reach the bottom of the frostcicle "tube" and the outer layers of the droplets vaporize and expand out into the vacuum; the rapid phase-change to gas causes it to boil like a refrigerant and freeze some of the vapor into solid oxygen, extending the frostcicle... (I'm a trained refrigeration/AC tech so all this is old hat to me...) The rest of the droplets are dribbling away into space, and will absorb heat from the sun and vaporize into gas...
By 4:55 into the flight (18:34 video time) there's a HUGE amount of solid oxygen frost visible covering the entire back end of the mylar insulation blanket and outside the thrust structure and upper engine area... More is visible around the top of the engine outside the mylar insulation... definitely a substantial leak... by 4:59 large visible "snowballs" of frost are breaking free and dropping behind the accelerating stage, and being blown apart by the expanding plume from the engine exhaust behind the nozzle...
At 5:05 flight time (18:44 video time) the middle of the mylar shield is showing a huge shower of liquid oxygen, rapidly forming a long frostcicle from the vaporizing droplets building oxygen frost... liquid oxygen is POURING from a large leak and showering outside the mylar shield... could be a stuck valve or tank or line rupture or leak getting worse...
At 5:21 into the flight (19:00 video time) a stream of liquid oxygen can be seen dribbling past the upper edge of the nozzle view on the other side of the stage and breaking up into droplets, as balls of frost break free from the huge frostcicles and drop past the accelerating rocket engine nozzle and are blown apart by the expanding engine exhaust plume behind the nozzle, as the flame expands out into the vacuum of space, cooling from expansion (which is why there is no long tail of flame behind upper stage nozzles-- the expansion of the plume cools it per Boyle's Law and causes it to become "smoke" or nearly clear, colorless gas not emitting photons from heat any longer-- thus only a few little "licks" of flame around the nozzle edge or behind the upper stage engine where the gas is still hot enough and hasn't expanded enough yet to cool below the glowing point where it no longer emits light as a visible flame).
At 5:30 after launch (19:08 video time) spurts of LOX are visible "pulsing" from the frostcicles... perhaps the liquid level getting below the level of the leak (if it's on the tank wall or fitting or seam or valve or something?) which is causing slight sloshing to produce spurts of liquid droplets then a short interval of vapor and lack of droplets til the next spurt arrives?
By 6:27 into the flight (20:06 video time) the droplets appear to have stopped, perhaps the liquid level dropping below the leaking point on the tank so only vapor is now escaping? OR perhaps below the level of the valve or whatever was leaking?? Oxygen frost balls are still visible dropping off the massive frostcicles on the aft end of the stage and thrust structure visible around the mylar insulation, with frost balls being blown away in the engine plume...
AND of course that's the last view we get of the second stage... it was obvious that the stage MUST have leaked a LOT of liquid oxygen during the upper stage burn... amazing it had enough to reach orbit. Of course an uncontrolled leak would continued leaking vapor and even liquid after shutdown, when the stage enters orbit after engine shutdown the liquid in the tanks tends to float around in large "gobs" or globs of liquid propellant... when one drifted past the leak it would spray LOX out into space, some would freeze and form frostcicles... some would spray out as droplets into space. When the stage is still in propulsive flight, the propellants are "seated" against the bottom of the tank, since acceleration of the stage acts like artificial gravity. Once the engine shuts down they're in freefall and drift around inside the tank. (this is the purpose of ullage rockets, to 'seat" the propellants in the bottom of the tank and fill the lines with liquid propellant prior to startup, as the denser liquid runs down the lines under gentle acceleration to force the lighter gaseous propellant up out of the line as a "bubble" (tests during Apollo Saturn I and early I-B flights showed as little as 1/100 gee is sufficient to seat the propellants in the tank).
Now I'll go watch the anomaly video. Hope this explains what was going on during the flight and why whatever happened likely happened. Also why engineering camera views like this can help immeasurably in analysis of mishaps. Usually works hand-in-hand with telemetry data on propellant flow rates, pressures, tank pressurization readings, etc to determine what actually happened...
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LoL, it was leaking fluids and blowing up the isolation but they were still reading their script.
Why couldnt we see it?
Probably the weather
from where?? Vandenberg launches are to the south, towards high inclination "polar" orbits... they cannot launch to the east into typical low-inclination "equatorial" orbits like from Cape Canaveral or KSC, because if the rocket exploded it would rain debris down on inhabited areas, and spent stages would land a couple hundred miles or so east of Vandenberg... can't launch north out of Vandy for the same reason-- the coast of California juts out westwards from Vandy into the Pacific, and they'd be overflying highly populated West Coast cities and towns and surburbs... so unless they fly a dogleg trajectory to keep them out over the ocean, they launch southwards or westwards (retrograde orbits, which takes a LOT more fuel because you have to overcome the roughly 1000 mph rotation of the Earth eastwards which gives a free ~1000 mph boost to launches going eastwards into "normal" posigrade low inclination orbits, which is why most rockets fly mostly eastwards... polar or high inclination orbits, it doesn't matter if they're north or south because it's at right angles to Earth's rotation direction... the only constraints are those of the launch site).
Same reason that high inclination launches out of KSC/CCSFS are usually dogleg trajectories southwards (toward polar orbit) or northeast along the Eastern Seaboard... toward the ISS fairly high inclination 51.6 degree orbit, but out over the ocean and not flying over the highly populated Eastern Seaboard... dogleg trajectories take more fuel, but they're the only way to launch into high inclination "Polar" orbits from the Cape...
Для тех, кто будет пересматривать: утечка началась на 17:45 :)
Max Q was 4 seconds early, obviously maxing out the engines on this one!
Looked like a slow fuel leak. Way too much ice otherwise.
the spacex low cost mess doesn't show second stage failling?
Is it me or do the satellites incased in the faring's look like the inside of a Borg ship.
Dream weaver is getting the chokie. 🤫
The windshield wiper foretells his tears 😂😂😂
Failures happen. Better luck on the next one
Totally abnormal behavior and anomaly on the second stage at 17:40. An oxygen line breaks or cracks rapidly flooding the inner volume of the mylar thermal protection bag with oxygen ice. Engine exploded on relight an hour after SECO-1 and Starlinks are in a fatal 295 by 138 km orbit. Periapsis was supposed to be 150km higher than that after a 1 second stage 2 burn. Starlinks being reprogrammed to fire their argon Hall effect thrusters at max force to save themselves, but there's just no way. They're going to reenter and burn up within the next few orbits.....
Let's hope the starlinks can save themselves 🙏
Get your cameras out to catch the burn up! I've never seen a re-entry but this sounds like I might have a decent chance tonight
Great thanx; NSF didn't xx
Engine go _boom_ on restart.
Why doesn’t space x show deployment anymore ?
Maybe some design changed and dont want china or russia to see?