/sci/ - Science & Math

HR/MIN/SEC EVENT
00:01:18 Max Q (moment of peak mechanical stress on the rocket)
00:02:30 1st stage main engine cutoff (MECO)
00:02:34 1st and 2nd stages separate
00:02:41 2nd stage engine starts
00:06:37 1st stage entry burn begins
00:08:38 2nd stage engine cutoff (SECO)
00:08:38 1st stage landing
00:11:49 Dragon separates from 2nd stage
00:12:35 Dragon nosecone open sequence begins

50% is iffy

Science onboard

Certain microbes form layers on the surface of rock that can release metals and minerals, a process known as biomining. BioAsteroid examines biofilm formation and biomining of asteroid or meteorite material in microgravity. Researchers are seeking a better understanding of the basic physical processes that control these mixtures, such as gravity, convection, and mixing. Microbe-rock interactions have many potential uses in space exploration and off-Earth settlement. Microbes could break down rocks into soils for plant growth, for example, or extract elements useful for life support systems and production of medicines.
https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=8308

Microgravity causes changes in the workload and shape of the human heart, and it is still unknown if these changes could become permanent if a person lived more than a year in space. Cardinal Heart studies how changes in gravity affect cardiovascular cells at the cellular and tissue level. The investigation uses 3D engineered heart tissues (EHTs), a type of tissue chip. Results could provide new understanding of heart problems on Earth, help identify new treatments, and support development of screening measures to predict cardiovascular risk prior to spaceflight.
https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=8218

>>12422337
SUBSA-BRAINS examines differences in capillary flow, interface reactions, and bubble formation during the solidification of brazing alloys in microgravity. Brazing is a type of soldering used to bond together similar materials, such as an aluminum alloy to aluminum, or dissimilar ones such as aluminum alloy to ceramics, at high temperatures. The technology could serve as a tool for constructing human habitats and vehicles on future space missions as well as for repairing damage caused by micrometeoroids or space debris.
https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=8295

The Effect of Microgravity on Human Brain Organoids observes the response of brain organoids to microgravity. Organoids are small living masses of cells that interact and grow. They can survive for months, providing a model for understanding how cells and tissues adapt to environmental changes. Organoids grown from neurons or nerve cells exhibit normal processes such as responding to stimuli and stress. Therefore, organoids can be used to look at how microgravity affects survival, metabolism, and features of brain cells, including rudimentary cognitive function.
https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=8024

>>12422334
Yeah

>>12422351
That's a lot of seatbelts.

meanwhile, check out the current state of the ISS thanks to a brief flythough thanks to Soichi https://www.youtube.com/watch?v=_-iJDELz8XI

3rd NASA mission for SpaceX less than a month.

so will this be the 2nd or third dragon capsule docked to iss?

>>12422416
it will be docked along with the Crew-1 capsule. Interestingly after this capsule leaves, Crew-1 dragon will take its place to free up the forward harmony port (PMA-2) for Starliner (lol)

>>12422425
More like for Crew-2 lol

>>12422425
>Starliner
ridiculous

>>12422425
>>12422458

Need to get the dragon capsules out of the way so they can be the life boats after starliner botches the docking and hits the ISS at high speed

I’m going to get 4 hr of sleep because I’m assuming it won’t be scrubbed and I’m setting an alarm. Don’t fail me now spacex.

Wonder if I could set a conditional alarm to only go off if it still hasn’t been scrubbed

>>12422464
>not getting 10 hours of sleep and waking up just now

>>12422461
Nah, before Stallliner gets there, Cruise will be on ISS, and he will save the station, MI style

>>12422325
>>12422464
Cancel.

>>12422498
bummer. Falcon 9 is a beast but it's achilles heel is definitely the weather

>>12422520
Because they have to land the beast in the middle of ocean on a droneship.

>>12422520
That's Florida and ocean landing for you. Doesn't matter what vehicle it is.

>>12422325
scrapped, it's tomorrow

>>12422484
>tfw I need 10 hours of sleep or I hate waking up.
>But I still don't feel sleepy until after being awake for 16 hours
My body runs on Mars time or something. I wish the gyms would open back up so I can wear myself out.

>Live in 13 hours
don't go anywhere, anon!

Driving home through south Wyoming tonight. Saw the starlink train for the first time.

>>12425256
what was their apparent magnitude? I saw a great train after starlink-L2 but I heard they've gotten dimmer

>>12425262
Bright as stars. Thought it was a weird reflection of the roadside retroreflectors at first.

We launching today, hopefully

>>12422498
Wrong pic?

Fuck, disregard >>12426712. I thought I wouldn't be affected by sleep deprivation too much.

>>12426716
get some sleep, anon

Mission control audio https://youtu.be/w7UDu6f-CwE

NSF Livestream: https://www.youtube.com/watch?v=XyUJIn1PTU8

we loading prop now bois

>100th successful mission if all goes to plan
OHNONONO

>>12426724
But muh hop. Or rather muh test fire.

>NASA covered launch

>>12426839
NASA's stream is 30 seconds behind lmao

https://www.youtube.com/watch?v=4xJAGFR_N-c

>>12426845
vs
https://www.youtube.com/watch?v=21X5lGlDOfg

NASA coverage

uh, is the watertower supposed to spew water from the top?

>NASA is about SCIENCE
>30 seconds behind actual launch timeilne

>>12426867
yeah it does that

>>12426867
Yes.

All systems go for launch

>main stream forgot the countdown
lol

>no countdown
WHAT THE FUCK WAS THAT

>clear rocket sounds without talking
NEAT. Surprised but welcome sound.

>>12426880
>NASA cat

Mission control is all fucked up, no audio.

This is the first time a crewed capsule has flown twice right?

>>12426886
This is not a crewed capsule. The only thing being reflown is the booster from bobendoug

>>12426886
No. That was the previous crew mission (DM-2 and Crew 1)

This is the first time a CARGO variant of the crew Dragon launches

24th launch for SpaceX this year. How many more will they launch this month? 3 more?

Kinda feel bad for the commentator. He doesn't have mission control to back him up on stream, and I don't think I've seen him before, though he's doing okay regardless. I wonder if he knows that the stream doesn't have audio.

2 launches per month on average is pretty insane

>>12426886
first flight of Cargo Dragon 2

>>12426892
He's done it few times before.

>>12426889
>>12426886
For Crew-1 C207 was used.
For Demo-2 C206. C206 is gonna be used for Crew-2; C207 for AX-1

debris from 1st stage?

Mission control's back

>>12426896
Ah okay

>>12426888
>>12426889
Oh shit I thought this was the DM-2 capsule being used for cargo for some reason. It's obviously a new vehicle

>>12426899
Interstage I think

Fake launch. How can you produce thrust in space if it is a vacuum? Nothing to push against. Gay as fuck

>>12426899
space rats

>>12426893
They did 4 in November, including 1 crewed.

>>12426899
it's ice
it's always ice

68th landing attempt

>68 landings
insane

Next landing will be nicer.

smoooooth landing

>>12426911
And 100th success F9 and 35th successful landing on "Ofcourse I still love you" droneship.

>100 successful launches
NOOOOOOOOOO

Is there anything in the trunk this time?

>>12426917
technically 101st if you count in flight abort I think

>>12426892
NASA's stream stole SpaceX's mission control audio. LMAO. Probably some fuck up somewhere for livestream engineers.

>>12426920
Christmas presents from Santa

>>12426920
>Trunk payload: https://nanoracks.com/bishop-airlock/
from OP

This is a taxi. It is safer than a plane and sure as hell safer than a car. When it will routinely carry people to orbit it will never kill more people annually than fucking kangaroos. Muh abort system. Muh clean rooms. Muh fifteen billion suppliers. It's a taxi.

KINO shot

so long Dragon!

>>12426926
And soon Elon will deliver a space cruise ship

>>12426925
cool. You could see it in the trunk as it separated

these look new on the earth view

>>12426926
kangaroos? what anon?

>>12426934
They kill like 20 australians per year.

that's a wrap, thanks for attending the launch thread.
next F9 is the 10th (SXM7), but SN8 should be popping off tomorrow....

what is spraying out right here? IIRC merlin vac pumps its exhaust into the bell for cooling ala the F1, so it's not that. Does the turbopump need multiple exhaust outlets or something?

>>12426939
And nothing of value was lost...

>>12426946
>but SN8 should be popping off tomorrow....
Did they move it again? I thought it was supposed to be at like 16 PM today.

>>12426947
nitrogen from RCS

>>12426953
just normal prop testing today

>>12426957
Eh. It's something.

>>12426955
Interesting. I didn't know that the 2nd stage used RCS that much. I guess it needs to be firing all the time to keep the craft stable? Thanks for the answer.

Docking scheduled for Monday 1:30 PM EST
NASA coverage of docking starts at 11:30 AM

>>12426968
Was that what caused the pulsating heart-like movement in the 2nd stage tinfoild wrap around the engine?

>>12426981
I have no idea, but I've noticed that too. Pretty weird.

>Landing video sucks again in the most interesting moment
WHY

>>12427007
Rocket flame interferes with the signal. They need a camera raft to film the landing.

>>12427007

The vibration of the active rocket is distorting the feed, the electronics inside the camera are shaking and so is the lense, warping the image. Also, the bright flare of the rocket exhaust could be overloading the sensors on the camera, adding even more interference.

>>12427016
>>12427018
Well what about doing something to solve it?
It happens every single time.
This is from the last crew dragon:
https://youtu.be/9DmLa8oNW_s?t=45

>>12426890
At least two launches (SirusXM-7 and NROL-108)

>>12427039
And 1-2 more Starlink I suspect.

>>12427007
Directional antenna plus intense vibration = choppy signal. The camera is probably getting a great picture that is also going to an SD card for later, but the live transmitted signal is all fucked up.

>>12427075
I could live with a replay a few minutes later.

>>12426890
https://nextspaceflight.com/launches/agency/upcoming/1/

looks like 4 more

What happens to the second stage? It would be possible to recover it with a parachute?

>>12427163
Either burns up if its low altitude or sent high up the orbit so it stays quite far away from other LEO objects.

>>12427163
>It would be possible to recover it with a parachute?
it's moving at orbital speed (~mach 25) at that point, so no. The atmosphere would destroy it on reentry. It would either have to carry a heavy heat shield or expend a lot of fuel to slow down. Both cases would cut into its payload capacity too much to be worth it.

>>12426893
>>12426906
Hell, they did 3 in June, August, and October.

>>12427036
no, it does not happen every single time, the boosters which touched down on land do not have this issue because the cameras are installed at a safe distance where the blast wave cant rattle them as much as on the drone ship. there have been several occasions as well where they filmed the drone ship from a support vessel.

>>12427277
one of their tugboats should be in the area. Maybe regulations prevent them from getting close enough