I thought carbon fiber didn't do great at exceptionally low temperatures?
The problem with carbon fibre at low temperatures is the resin rather than the fibre itself. Apparently, SpaceX has found/developed a suitable low-temp alternative that doesn’t delaminate at lox scale temperatures? They seem to be pretty confident they can make this stuff fly…
I thought carbon fiber didn't do great at exceptionally low temperatures?
The problem with carbon fibre at low temperatures is the resin rather than the fibre itself. Apparently, SpaceX has found/developed a suitable low-temp alternative that doesn’t delaminate at lox scale temperatures? They seem to be pretty confident they can make this stuff fly…
I know the Electron rocket has apparently solved it, so I guess I'm not super surprised, just curious.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
NASA’s Juno mission has provided the first view of the dynamo, or engine, powering Jupiter's magnetic field. The new global portrait reveals unexpected irregularities and regions of surprising magnetic field intensity.
Red areas show where magnetic field lines emerge from the planet, while blue areas show where they return. As Juno continues its mission, it will improve our understanding of Jupiter's complex magnetic environment.
As usually happens each year, the April 12 anniversary of Vostok 1 has snuck up on us. Though most people in this thread probably know, Vostok 1 was the 1961 mission that put the first human space traveler, Cosmonaut Yuri Alekseyevich Gagarin, into orbit, followed in subsequent weeks by astronaut Alan Shepard's first sub-orbital flight.
(2013 movie with a totally wicked Korolev cross at 8:05)
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BrodyThe WatchThe First ShoreRegistered Userregular
Looks like India's launch last night was successful, making it their third attempted, and third successful launch, this year. They plan on launching their fourth this year in May.
BrodyThe WatchThe First ShoreRegistered Userregular
Apparently TESS is going into enough of an elliptical orbit (or at least the second stage will be, I assume TESS will round itself out from there) that instead of bringing the second stage back in, they are flinging it out into a graveyard orbit. Thought that was an interesting tidbit, and it's nice to hear SpaceX is worried about things like Kessler Syndrome. Although I guess their business depends on avoiding it.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
I love how counter intuitive orbital mechanics can be. Why yes, it does take more fuel to "just" fall back to earth than it does to fly farther into space.
Just remember that half the people you meet are below average intelligence.
I love how counter intuitive orbital mechanics can be. Why yes, it does take more fuel to "just" fall back to earth than it does to fly farther into space.
You can think of it in the sense that you are already in orbit going into a bigger orbit versus already in orbit going back to Earth.
I'm not sure if that's more intuitive or not, but it helped me when I was first learning about gravity and orbits in school.
I love how counter intuitive orbital mechanics can be. Why yes, it does take more fuel to "just" fall back to earth than it does to fly farther into space.
Depends ...
If you can drop your periapsis low enough, you can just let atmospheric drag handle the rest, and that might be less fuel required than the graveyard orbit.
Apparently TESS is going into enough of an elliptical orbit (or at least the second stage will be, I assume TESS will round itself out from there) that instead of bringing the second stage back in, they are flinging it out into a graveyard orbit. Thought that was an interesting tidbit, and it's nice to hear SpaceX is worried about things like Kessler Syndrome. Although I guess their business depends on avoiding it.
There's a lot that went into the TESS orbit! They had to design an orbit that allowed them to meet their mission objectives while mounting only 200 m/s ΔV and a small antenna on the observatory, freeing up their limited budget for better optics and processing. Scott Manley has a nice explainer here:
BrodyThe WatchThe First ShoreRegistered Userregular
I didn't catch from Scott's video when the satellite would disconnect from the second stage, but yeah, I guess if its going to be carrying the satellite that far out, a burn to bring it back into atmosphere would be a little ridiculous.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
AthenorBattle Hardened OptimistThe Skies of HiigaraRegistered Userregular
Successful stage 1 landing! They managed to keep the on-booster camera running the whole time, but the drone ship camera cut off. Now, 39 minutes of coasting.
So scott mentioned the stage 1 usually swings out before landing to mitigate damage to the droneship, but it looks like it didn't do that this time? just straight down PLOP!
So scott mentioned the stage 1 usually swings out before landing to mitigate damage to the droneship, but it looks like it didn't do that this time? just straight down PLOP!
It's really hard to see from the rockets perspective, and it's only off by 300ft, which isn't much in the grand scheme of things.
My understanding is that they aim to one side of the boat, and then use the suicide slam to line things up at the last second.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
So scott mentioned the stage 1 usually swings out before landing to mitigate damage to the droneship, but it looks like it didn't do that this time? just straight down PLOP!
It's really hard to see from the rockets perspective, and it's only off by 300ft, which isn't much in the grand scheme of things.
My understanding is that they aim to one side of the boat, and then use the suicide slam to line things up at the last second.
Yup It does not need to aim that far away but you want it not going directly at the landing target incase engines fail to ignite you can see some of these on some of the failures where they look like they just miss the platform. The adjustment needed is small so if everything works well it looks seamless.
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BrodyThe WatchThe First ShoreRegistered Userregular
Two launches coming up this week, neither of them carrying or launched by U.S. interests.
ESA is launching a Rockot... rocket on the 25th, 1:57 PM EDT, carrying what looks like a satellite to look at the Earth, and how much we've ruined it.
China is launching a Long March 11(? I have no idea what the number signifies) on the 26th, 12:40 AM EDT with something to take pictures of the Earth. I guess. Is there a site where you can play "Where will the boosters land" bingo? That sounds like a great idea.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
It's just the eleventh model proposed for the Long March series of rockets. Sub variants (like 3A, 3B, 3C, etc.) don't get their own numbers, and some main models (like 9) are still under consideration--the model numbers can keep going, so Long March 11 can be launched before Long March 9 is even finalized on paper.
Hopefully they stop bringing the stages down in residential areas.
I like being on the opposite hemisphere from Long March launches, given how the last several have gone. I'm pretty comfortable with the amount of hydrazine in my diet as it stands.
Two launches coming up this week, neither of them carrying or launched by U.S. interests.
ESA is launching a Rockot... rocket on the 25th, 1:57 PM EDT, carrying what looks like a satellite to look at the Earth, and how much we've ruined it.
China is launching a Long March 11(? I have no idea what the number signifies) on the 26th, 12:40 AM EDT with something to take pictures of the Earth. I guess. Is there a site where you can play "Where will the boosters land" bingo? That sounds like a great idea.
Both of these launches went off with out a hitch.
"I will write your name in the ruin of them. I will paint you across history in the color of their blood."
Posts
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
The problem with carbon fibre at low temperatures is the resin rather than the fibre itself. Apparently, SpaceX has found/developed a suitable low-temp alternative that doesn’t delaminate at lox scale temperatures? They seem to be pretty confident they can make this stuff fly…
Nintendo Network ID: AzraelRose
DropBox invite link - get 500MB extra free.
I know the Electron rocket has apparently solved it, so I guess I'm not super surprised, just curious.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
edit:
Posted too soon...
Low 3-D Flyover of Jupiter’s North Pole in Infrared
(2013 movie with a totally wicked Korolev cross at 8:05)
The footage isn't great, but not everyone can be SpaceX.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
Tomorrow, from Cape Canaveral as well, SpaceX will be launching TESS.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
You can think of it in the sense that you are already in orbit going into a bigger orbit versus already in orbit going back to Earth.
I'm not sure if that's more intuitive or not, but it helped me when I was first learning about gravity and orbits in school.
Depends ...
If you can drop your periapsis low enough, you can just let atmospheric drag handle the rest, and that might be less fuel required than the graveyard orbit.
Steam: Elvenshae // PSN: Elvenshae // WotC: Elvenshae
Wilds of Aladrion: [https://forums.penny-arcade.com/discussion/comment/43159014/#Comment_43159014]Ellandryn[/url]
There's a lot that went into the TESS orbit! They had to design an orbit that allowed them to meet their mission objectives while mounting only 200 m/s ΔV and a small antenna on the observatory, freeing up their limited budget for better optics and processing. Scott Manley has a nice explainer here:
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
Scott Manley did a video on why the TESS's orbit is so weird.
It is.. weird.
Steam: Elvenshae // PSN: Elvenshae // WotC: Elvenshae
Wilds of Aladrion: [https://forums.penny-arcade.com/discussion/comment/43159014/#Comment_43159014]Ellandryn[/url]
Steam ID: Obos Vent: Obos
It's really hard to see from the rockets perspective, and it's only off by 300ft, which isn't much in the grand scheme of things.
My understanding is that they aim to one side of the boat, and then use the suicide slam to line things up at the last second.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
Yup It does not need to aim that far away but you want it not going directly at the landing target incase engines fail to ignite you can see some of these on some of the failures where they look like they just miss the platform. The adjustment needed is small so if everything works well it looks seamless.
ESA is launching a Rockot... rocket on the 25th, 1:57 PM EDT, carrying what looks like a satellite to look at the Earth, and how much we've ruined it.
China is launching a Long March 11(? I have no idea what the number signifies) on the 26th, 12:40 AM EDT with something to take pictures of the Earth. I guess. Is there a site where you can play "Where will the boosters land" bingo? That sounds like a great idea.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
I like being on the opposite hemisphere from Long March launches, given how the last several have gone. I'm pretty comfortable with the amount of hydrazine in my diet as it stands.
https://gizmodo.com/incredible-new-gif-shows-cosmic-snow-on-the-surface-of-1825495142
Rosetta itself was deorbited in September 2016
Probably not many, easier to just mount a really good optical zoom instead.
Both of these launches went off with out a hitch.
The Monster Baru Cormorant - Seth Dickinson
Steam: Korvalain
https://www.nytimes.com/2018/04/30/science/mars-insight-launch.html