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#560
by
TheFallen
on 07 Feb, 2018 00:50
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It will likely stay attached to the upper stage, which provides the power for the current video and telemetry being broadcast. But that power will be gone just a few hours from now.
According to the infographic below, the Tesla will separate from the Upper Stage after TMI.
Which begs the question: Can Tesla and SpaceX brag that they'll soon have the farthest human-rated vehicle (NOT spacecraft) to leave Earth orbit since Apollo 17 in '72?
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#561
by
cscott
on 07 Feb, 2018 00:53
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Despite Elon retweeting it, that graphic is from NSF, not SpaceX.
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#562
by
TheFallen
on 07 Feb, 2018 00:56
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Despite Elon retweeting it, that graphic is from NSF, not SpaceX.
D'oh! Thanks for the clarification
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#563
by
the_other_Doug
on 07 Feb, 2018 00:56
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It will likely stay attached to the upper stage, which provides the power for the current video and telemetry being broadcast. But that power will be gone just a few hours from now.
According to the infographic below, the Tesla will separate from the Upper Stage after TMI.
Which begs the question: Can Tesla and SpaceX brag that they'll soon have the farthest human-rated vehicle (NOT spacecraft) to leave Earth orbit since Apollo 17 in '72?
As noted, that's an NSF graphic, meant to indicate the launch events during a "generic" FH launch. I truly don't believe the mount holding the Tesla is designed to separate it from the upper stage.
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#564
by
Jeramiah Johnson
on 07 Feb, 2018 01:04
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I think it important the NASASpaceFlight team here should quote Elon as saying that the BFS Ship part is also capable of being a SSTO/Land.
That in fact they should not take a pass on the Hopper trials because in the end there are questions about Sub-orbital Point to Point transportation.
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#565
by
CuddlyRocket
on 07 Feb, 2018 07:52
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So it was mentioned that there was also a storage device called the "ark" which had Isaac Asimov's Foundation trilogy on it. Was that all it had? No Library of Congress, or anything like that?
I'm sure if you offer to pay to transcribe the Library of Congress onto the Arch storage media, they'll try and arrange something!
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#566
by
oiorionsbelt
on 09 Feb, 2018 00:15
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Can someone annotate this picture, please?
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#567
by
FlokiViking
on 09 Feb, 2018 01:17
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#568
by
OnWithTheShow
on 09 Feb, 2018 01:21
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Can someone annotate this picture, please?
Stage 2 LOX tank camera most likely.
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#569
by
sanman
on 09 Feb, 2018 02:09
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Someone claims to have spotted Tesla+Starman traveling out in the heavens:
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#570
by
Steven Pietrobon
on 09 Feb, 2018 02:56
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Can someone annotate this picture, please?
Attached is an enhanced image. We're looking into the bottom of the upper stage LOX tank. At each corner we can see four black cylindrical helium tank. There might be other helium tanks at the top and bottom of the picture, but the long aspect ratio means we can't see them. You can see there is still quite a bit of LOX left as the LOX level is close to the top of the helium tanks. Not 100% sure what the silver cylindrical object is. It might be to contain supercold helium during the filling process. It might also be close to the camera and be some kind of level sensor.
SpaceX seems to have added a vertical structure in the middle with six fins to the sides. I believe this is to help hold the LOX to the bottom of the tank during the coast phase. At the top of the vertical structure a half hemisphere of LOX can be seen.
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#571
by
starsilk
on 09 Feb, 2018 05:19
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Can someone annotate this picture, please?
Attached is an enhanced image. We're looking into the bottom of the upper stage LOX tank. At each corner we can see four black cylindrical helium tank. There might be other helium tanks at the top and bottom of the picture, but the long aspect ratio means we can't see them. You can see there is still quite a bit of LOX left as the LOX level is close to the top of the helium tanks. Not 100% sure what the silver cylindrical object is. It might be to contain supercold helium during the filling process. It might also be close to the camera and be some kind of level sensor.
SpaceX seems to have added a vertical structure in the middle with six fins to the sides. I believe this is to help hold the LOX to the bottom of the tank during the coast phase. At the top of the vertical structure a half hemisphere of LOX can be seen.
It is clearly Elon's fish tank, you can see the fishies swimming in it.
But seriously, what are those? Debris??! Seems highly unlikely..
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#572
by
speedevil
on 09 Feb, 2018 10:50
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It is clearly Elon's fish tank, you can see the fishies swimming in it.
But seriously, what are those? Debris??! Seems highly unlikely..
Is it at all possible they could be solid oxygen?
I can't see a reason for it to get that cold though, unless the tank is wholly vented.
If it is wholly vented, this would considerably reduce heat transfer to the kerosene.
A super-chilled liquid at the bottom with negligible vapour pressure, with a rarefied atmosphere on top of it, not dense enough to have meaningful losses through convection.
If the tank is then not isothermal, it might do very good things to the heat gain into the blob of oxygen.
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#573
by
speedevil
on 09 Feb, 2018 11:19
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SpaceX seems to have added a vertical structure in the middle with six fins to the sides. I believe this is to help hold the LOX to the bottom of the tank during the coast phase. At the top of the vertical structure a half hemisphere of LOX can be seen.
Reminiscent of the landing propellant tanks in the BFR, though surface tension driven.
I wonder if this could be to ensure programatically that there is enough LOX to start the burn in a very assured manner with no glitches due to bubbles.
A couple of hundred litres of oxidiser gathered in one blob means you are basically certain to have a clean start.
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#574
by
archipeppe68
on 09 Feb, 2018 12:01
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My contribution to the topic.
Ciao
Giuseppe
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#575
by
Jim
on 09 Feb, 2018 13:05
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SpaceX seems to have added a vertical structure in the middle with six fins to the sides. I believe this is to help hold the LOX to the bottom of the tank during the coast phase. At the top of the vertical structure a half hemisphere of LOX can be seen.
No, they use thrusters to settle the tanks
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#576
by
Johnnyhinbos
on 09 Feb, 2018 13:26
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I thought the six ribs were baffles to help reduce sloshing. The little cylinder to the right of the image - perhaps part of the RCS system? Where do the avionics live on the second stage? Seems mainly all tankage...
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#577
by
OnWithTheShow
on 09 Feb, 2018 13:46
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It is clearly Elon's fish tank, you can see the fishies swimming in it.
But seriously, what are those? Debris??! Seems highly unlikely..
Is it at all possible they could be solid oxygen?
I can't see a reason for it to get that cold though, unless the tank is wholly vented.
If it is wholly vented, this would considerably reduce heat transfer to the kerosene.
A super-chilled liquid at the bottom with negligible vapour pressure, with a rarefied atmosphere on top of it, not dense enough to have meaningful losses through convection.
If the tank is then not isothermal, it might do very good things to the heat gain into the blob of oxygen.
If I had to guess Id say the discoloration is from where there are objects attached to the bottom side of the tank.
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#578
by
speedevil
on 09 Feb, 2018 13:48
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DEIMOS (Deep Extragalactic Imaging Multi-Object Spectrograph) at the Keck Observatory has spotted the Roadster:
Wow -- some astronomer gave up Keck time to look for the Roadster?!
A lot of work has been done looking at OnumaOnuma (or whatever its name is) including in quite a few large telescopes, and hypothesising about its structure and composition.
It is an obvious extension of that work to take a quick look at the Tesla and see what it looks like.
Due to its comparative ridiculous brightness (for Keck), the exposure time needed is really very minimal indeed, and if the instrument is already setup, it's very limited time to do the observation. Plus, seeing could be 'bad' and still be good enough for observing something this bright.
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#579
by
Nomadd
on 09 Feb, 2018 15:08
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I thought the six ribs were baffles to help reduce sloshing.
Or swirling as in Falcon 1 flight 2.
