/sci/ - Science & Math

>>14792145
>Perseverance is revolutionizing rover capabilities
>SuperCam was designed with a guaranteed focus distance of 7 meters, but the capacity to shoot even further. Over the past year, the SuperCam team has been testing how much further we can focus our laser and still generate a radiative plasma.
>On sol 328 (January 22nd), we successfully achieved the longest laser-based spectroscopy analysis ever performed on Mars, reaching 10 meters. We are now preparing to test our laser on a target 11 meters away – as far away as a telephone-pole is tall!
Truly ground-breaking and revolutionary.

can the nozzle velocity exceed the water jet velocity in principle

>>14792145
https://arstechnica.com/science/2022/08/forget-5g-wireless-spacex-and-t-mobile-want-to-offer-zero-g-coverage/

Berger article about the whole Tmobile/SpaceX-Starlink service

>>14792151
Ask Heron.

>>14792151
yes

why build many solar panels when you can just build one and reflect sunlight on it

>>14792189
What happens if you build a regular solar panel and use reflectors to shine 1000x the light on it?

>>14792189
For actual solar panels the efficiency goes down with heat
And the solar heating type in your picture negates one of the biggest upsides of solar in my opinion: decentralisation

>>14792134
it's so fucking big

>>14792189
solar panels stop working if you heat them up
mirrors like these are generally only worth it in solar thermal arrays in hot deserts where no semiconductor solar panels are involved

First for Neutron

>>14792189
it's not that easy in molten saltetry

WE

https://www.space.com/vice-president-kamala-harris-attend-artemis-1-launch

>Harris has also worked to get the public excited about spaceflight and exploration. These outreach efforts include speaking with numerous NASA astronauts on Earth and in space, and even hosting a space-themed scavenger hunt with kids that featured in a YouTube original last year.

WTF based

>>14792189
only works in direct sunlight, pv will give you power when it's a bit overcast

so spacex and t-mobile are making this real?

>>14792150
nice

>>14792309
I want to be part of a SpaceX scavenger hunt.

>>14792299
Holy shit bros...it's actually happening.

>>14792299
Aren't going

>>14792299
gaan

>>14792277
Any nice hotels in there?

>>14792164
Imagine the roaming charges

>>14792164
I've been waiting for this.

My theory for years is that eventually 5G will be the new wifi and satellite will be the new cell phone internet.

Can't wait to telecommute to work from on top of a mountain or some shit.

>>14792368
Free with current popular plans already

>>14792368
How do you "roam" if the network covers the entire surface of the earth?

>>14792400
For now, just like Telsa supercharging started out it's too perfect not to start implementing any in the future. I would still probably switch to it eventually though, knowing the money will be going straight to Mars

>>14792309
I would support a literal commie trans progressive president as long as they’re cool with spaceflight. If the election was between Trump and AOC, and AOC pledged her support for space stuff, I would vote for her 100%

>>14792504
>trusting crazy
You're crazy so that fits.
>>14792309
Did you already forget the outreach video they made with her last year, with the child actors?

>>14792309
It's not that surprising Obama loved SpaceX too.

Really, every president since Bush, both Democrat and Republican, has been good for roggets.

>>14792525
Like them or hate them, Bush and Obama pushing CRS, COTS, and CCDEV was a good move

Atlas L

methane is meme fuel

>>14792568
*farts*

>>14792568
t. tom markusic

Well well well. The crane has approached Ship 24. Could we be seeing preps for a full stack on the eve of SLS Artemis-I (the assumption was more Static Fires first)? Hopefully not a rollback.

>>14792586
Elon will blow up Ship 24 on the pad just to get eyes of Artemis.

>>14792541
what in tarnation
there were some really crackpot rocket designs in the 70s and 80s

they will never do a full booster static fire

>>14792151
Yes because the water jet velocity relative to the ground is irrelevant to the system. Water runs outward with respect to the axis of rotation, then runs into the 90 degree elbow and reacts off of it to move parallel to the axis of rotation, with the reaction force causing the spin rate of the thing to accelerate.

They should make the dishes open source too https://github.com/SpaceExplorationTechnologies/starlink-wifi-gen2

>>14792204
>decentralisation
Great way to make a 100% renewables powered grid cost far more and suffer from local energy shortages all the time.

>>14792211
>>14792189
>>14792238
Concentrated solar power systems used to be the cheaper option compared to photovoltaics but recently the cost per kWh capacity for photovoltaics has dropped through the floor and it never makes economic sense to do concentrated solar any more, under any condition, except for the tiny edge case in which you have a parabolic trough mirror on the roof of your cabin in winter to provide supplemental heating through water circulation.

>>14792223
>names rocket Neutron
>it's not propelled by a direct-drive continuous fission propulsion system
kind of a waste if you ask me

>>14792309
Who exactly thinks that any of that shit will get anyone excited or interested in space?

>>14792694
Decrepit out-of-touch boomers in government.

>>14792673
The grid would still be connected, I'm not talking about splitting the grid into pieces, I'm talking about replacing large power plants with having solar panels fucking everywhere

That way you can't just target one big power plant, you instead need to target every roof in the city

>>14792696
So uh why don't we just kill em?

>>14792299
WUZ

>>14792727
That's what I'm saying too though, spreading out the generation like that makes it extremely difficult to manage the grid. It's not like you can just hook up wires and magically have a stable voltage and frequency on the lines. A shitload of work managing all that crap happens every day.

>>14792738
GAAAAN

>>14792309
Why is the vice-president doing first lady stuff?

>>14792688
>>names rocket Neutron
>>it's not propelled by a direct-drive
based
>>continuous
cringe
>>fission propulsion system
>kind of a waste if you ask me
based

>>14792735
The best part is no part

>>14792748
What do you think a Vice President does?

They have no actual responsibilities so they're just there to be the face of the administration for things that don't require anyone actually important.

>>14792747
>GAAAAAAAAAAAAAAAN

>>14792751
If you tune your orion drive so that the next bomb detonates before the first one's plasma cloud has fully dispersed you can call it continuous

>>14792761
even pulsed solid core isnt continuous

>>14792771
Not talking about pulsed solid core

Continuous fission is impossible because fission events are discreet

>>14792771
Nuclear Salt Water is

>>14792757
VP is a free agent that isn't very visible outwards. You can put them in charge of important shit, but doesn't look like Kamala can handle that.

>>14792787
Continuous niggering is possible because your posts prove it

full stack incoming

>>14792816
You can't build a propulsion system using niggers, though: they don't perform work

>>14792822
believe it when i see it bud

>>14792399
Man, people who get to make patches for missions are the best.

>>14792827
I think you'll find they built everything in America chuddychops

>>14792840
If I carve a statue from stone using a chisel, did the chisel do the work or did I?
If a woodsman drags timber through the snow using a team of horses, did the horses do the work or did the woodsman?
If a white man runs a plantation by driving slaves, did the slaves do the work or did the driver?

>>14792853
you make a good case

ALERT! ALERT!
God hates SLS

Tornado spotted near SLS

https://youtu.be/5tzqBWtHL2o

>>14792822
>>14792828

Heard they where going to do a full stack to support Artemis.

>>14792898
I hate SLS, therefore I am God

>>14792898

>>14792898
https://www.youtube.com/watch?v=9793cuoNpQ0
ALERT
SEEK SHELTER IMMEDIATELY
THIS IS NOT A DRILL
YOUR LIFE IS IN DANGER

>>14792903
>>14792905
>>14792909
IT'S FUCKING HAPPENNING!! AAAAAAAAAAHHHHHHHHHH

>>14792822
>Monday approaches
>"Here we are, just 1 hour from launching the MOST POWERFUL rocket NASA has ever built. We are going!"
>Meanwhile at Starbase, a frost begins to build on the stack...

Reminder that Firefly's second launch attempt is September 3rd.

>>14792922
I hope this one goes better.

>>14792922

>>14792922

I unironically hope musk buys Firefly if it goes bankrupt again.

>>14792915

Terran R's Aeon R engine bell

?

>>14792980
Weights for a crane or sum shite

>>14792940
Daddy Northrop won't let that happen. Also what could SpaceX possibly want out of Firefly?

>>14792541
Air light the H-1s

>>14792994
Firefly Beta is Mini-Starship and they're desperate for it

>>14792945
kek

>>14792898
If a tornado destroyed SLS right before its launch attempt I would lol forever

>>14792204
>>14792211

And yet concentrating cells have been built that get higher efficiencies than the equivalent non concentrating cell.

>>14793015
Beta right now is guaranteed kerolox, burdened by oldspace, and probably partial reuse at most. Only BO and Relativity are developing mini Starships, and SpaceX would be better off developing their own at that point.

>>14793036
Totally the same thing as reflecting MWs of power onto a small PV panel because you don't know the difference between solar thermal and concentrator photovoltaics

>>14793042
It's just standing there... menacingly!

RD171MV for Irtysh

What's going to happen to the pumpkins after Artemis 1?

>>14793084
You can see them disappearing, just fading away inside the rocket. Not a good look for NASA.

>>14793084
They're going to be replaced by a bigger upper stage that doesn't waste five tons necking down from the core

>>14793084
Americans will do anything in order to not learn the metric system. How many pumpkins equal the area of a football field?

https://youtube.com/shorts/HMomc-xgRZE?feature=share “Boxabl” CEO is at Starbase right now overseeing a delivery of portable living structures for the employees who work at the site. After seeing Starship, he immediately layed down on the trailer and shouted:
>I WANT THIS ROCKET TO BE MY DICK I WANT THIS ROCKET TO BE MY DICK

>>14793104
>How many pumpkins equal the area of a football field
5610, based on the UK average of one acre yielding 4250 pumpkins and the acreage of an American football field being 1.32 acres.

https://www.countrysideonline.co.uk/people-in-farming/meet-the-pumpkin-farmers/

https://langleyrams.com/how-many-acres-is-a-football-field/

>>14793119
Beat me to it, I was halfway through doing a sphere-packing algo

>>14793117
I hate removing vowels in company names

>>14793127
Yours is probably still a better estimate, mine only takes into account the average yield of that area actually growing pumpkins, and they don't grow packed one right next to another. The number of pumpkins required to cover a football field is undoubtedly higher.

>>14792145
>14792029
so true

>>14793138
>>14792029
I'm only posting this so I can click on the link to that other post instead of going searching

>>14793117
Why do these jannies think they deserve the right to be cringe? Only Musk can do that.

https://www.youtube.com/watch?v=3D_34C6V2RQ

She is ready

>>14793195
Imagine if they stream Clear on the Amazon tablet they're flying on this mission

>>14793195
>>14793195
Ooops! You seem to have posted this in the wrong section of this website, let me redirect you
>>>/vt/

>>14793084
They're going to wait forever for Block 1B to ever exist.

>>14793195
She is absolutely adorable, can't wait :3

>>14793208
Cope & seethe

>NASA & Boeing have penciled in a launch date in February for the first piloted test flight of the Starliner commercial crew capsule
>2023

>>14792630
nor a full booster fire

>>14793165
sorry mate, missed a >

>>14792822
Is the full stack needed for all engine static fire or is this again just for show? Will they be stacking the thing every summer from now on?

>>14793338
This, sonic vibrations reverberating from flat ground into the booster will tear it apart from sound pressure the moment all 33 engines ignite

This is basic physics, basic mathematics, basic audio dynamics, basic acoustic dynamics. SpaceX isn't engineering their way out of this without flame diverter+trench

>>14793042
you just look at the thing and know it means business

>>14793350
Yeah, it means business with thousands of contractors.

>>14792667
As you said it is a reaction engine. If you consider a chunk of water, first it is stationary, then it is spinning fast inside the arms, and after it is exhausted it still has velocity in the direction of rotation which seems to violate Newton's 3rd law

how come NASA is turning off the comments on their SLS youtube videos

>>14793395
Stops you from harrassing them, doesn't it?

>>14793395
Elon's giving a way crypto! Click here!

>>14793400
I was only gonna ask why it takes a diverse set of people to build the SLS and how much the SLS costs

Assuming we get cheap big rockets (Starship or something like it), can we expect to get more frequent and faster missions?
As in, we are gonna get a Uranus mission, but could we also get a Neptune mission at the same time if the costs get significantly lower?

>>14793407
No

Space exploration budgets have been flat or negative for decades. If anything it'll be slower because it'll cost more to build larger missions

Speaking of missions, you guys have until September 28th if you want to be a JPL intern
https://www.jpl.nasa.gov/edu/intern/apply/nasa-science-mission-design-schools/

>>14793424
Don't do it guys California is triple gay.

Does anyone have "the 40 year old BOOOSTER" coomer meme? Thanks.

>>14793441

>>14793407
I assume it'll take NASA a decade to catch up but if Starship hits even double it's target launch cost we could potentially see swarms of smaller, cheaper sats being lobbed at other planets in the near future. SpaceX might even subsidize refueling launches for such missions just to build the market and grab PR since Starlink is always gonna be their big money maker.

>>14793450
Thank you!

>>14793450
what does the smoke/exhaust consist of?

>>14793452
I could totally see Elon paying for some sort of $100k/ton to Mars orbit "promotion" for a bunch of universities to collectively fill a single payload bay.
If their backend launch costs are anywhere near $2-5M it'd be pennies for Elon but it'd increase the satellite mass around Mars by like 10x in a single flight. Bonus points if they can bias their experiments towards data that can be used for colonization efforts down the road.

>>14793407
>we are gonna get a Uranus mission
no evidence of this, no money committed to it. we could have gambled with Cassini but faggotry prevailed

>>14793464
various nitric oxides. nuclear mushroom clouds are the same colour for the same reason

>>14793450
>extremely aesthetic plume
Disagree, the plume looks like an unstructured cloud of smoke.

this is what a real plume looks like, made by a real rocket engine

>>14792917
Kino

>>14793483
>>14793491
There can only be one

>>14793515
Based

https://m.youtube.com/watch?v=_eB82KvuesQ

>>14793515
flame creeping is so kino

I haven't been able to work on any engines for the past few months due to an internship that I had to travel for, but I'm now back in the saddle and ready to make a third attempt: the Krystal 1C.

I finally gave up on using turbo impellers as pumps and will be switching to pressure fed, so it may actually have a chance of really working this time. I'm planning to use ethanol as my fuel and pressurize the tank with an air compressor. I do have a CO2 bottle that I really wanted to use instead, but the regulator I would have needed was kind of pricey. The air compressor that I plan to use goes up to 160 psi, which should allow a chamber pressure of 123 psi or so. I'm a bit sad that I had to lower it this much (it's even worse than Kestrel :( ), but oh well.

Another change is that I'm finally going to make a more sane ignition system. I plan to use a spark plug and trembler coil this time around.

ESGhound debunking Starchud

>>14793570
>TMAFAssociates
>ESGhound
Same group of Elon skeptics lining up lol

>>14793565

>>14793565
I think switching to pressure fed is a good idea. What type of injector will you be using and will the parts in the picture come off a lathe? I also think doing flanges instead of welds where possible is a good idea

>>14793578
I'm planning on a pintle injector really similar to the ones I was using before, but I'm going to use smaller holes this time just incase they were too large before and causing instability.

The combustion chamber and nozzle will be TIGed together sheet metal, but the injector side will be machined on an old manual lathe.

>>14793565
Don't use spherical tanks if you go pressurefed. It ruined Astra.

>>14793589
Thanks, Astra Anon! I'm planning to use DOM tubing and make the end caps super thick so I can get away with them being flat.

The T-Mobile announcement and it’s consequences have been a disaster for my YouTube feed

>>14793600
the retarded Tesla Pi Phone rumors are hilarious they also ended up pumping my Marscoin bags

>>14793343
Basic math and physics tells you that actually the sound reflecting off of the ground doesn't affect the vehicle in any way and sound suppression has never mattered

>>14793373
Only if you ignore pressure differentials. In reality the problem you're coming across is that the thing can't reach infinite speed because it needs to spin up the water propellant before it reacts against the bent tubes: this doesn't mean that it doesn't spin, it means it spins until the friction in the system and energy needed to spin up the propellant is balanced by the thrust output, as driven by internal pressure. If you ONLY spin the thing, then no, it can't generate thrust and spin up, it NEEDS to have internal pressure to accelerate its own spin.

>>14793565
ethanol tank with compressed air? my dude you are building a bomb

>>14793600
Pajeet clickbait AI rivals that of the Dojo supercomputer, sadly they generate too much ad revenue to be shut down

>>14793587
wouldn't it be simpler to make it all on a lathe.

>>14793627
It would take a lot or material and a ton of time

>>14793623
Air pressurized fuel tanks are pretty common in the marine world and in very early aircraft.

>>14792145
EA sportss

>>14793407
>Assuming we get cheap big rockets (Starship or something like it), can we expect to get more frequent and faster missions?
Cost of spaceflight has already lowered enough, and private interest in space exploration has already increased enough, that there have already been multiple private Moon probe missions and an upcoming private Venus probe. Anyone who thinks with having cheap Starship around there won't be probes being built for 1/100th the budget, with 1/5th the capability per kg but 20x the mass, is a silly billy.
>As in, we are gonna get a Uranus mission, but could we also get a Neptune mission at the same time if the costs get significantly lower?
We could have multiple probes with greater scientific data capacity than Cassini going to every planet in the solar system simultaneously for less cost than a single Mars rover.

>>14793600
It's such a nothingburger and yet it's amazing clickbait/advertising fodder

>>14793473
Listen at this point I'm more angry at you than at Cassini's demise. Fuck off.

>>14793491

>>14793636
>It would take a lot or material and a ton of time
You can order it from a machine shop, they will charge you some money and you'll get your parts. You need to value your time and tig welding sheet metal isn't a way to do that

>>14793636
>Air pressurized fuel tanks
huh that's interesting, I didn't know that. How high of a pressure though? I presume it's only as high as necessary to feed boost pumps?

>>14793623
>>14793636
>Air pressurized fuel tanks are pretty common in the marine world and in very early aircraft.
If I were me I would be used a bottle of CO2 to pressurize my fuel, zero percent chance I'm putting an oxidizer into a fuel tank as ullage gas.

>>14793660
usually just a few psi. Upon further thought, the V1 fuel tank is a much better example. They pressurized alcohol with 900 psi compressed air.

I don't think you really need a proper regulator. Just slowly pressurize the propellant tank with co2 until the pressure is right and then just disconnect the co2 tank entirely.

>>14793664
hmmm... I might need to reconsider. I'll shop for regulators some more.

>>14793645
what I'm hearing is that you want me to remind /sfg/ about the lost Cassini-Uranus option in every thread, do I have that right anon?

>>14793084
what pumpkins?

>>14793639
Yep. I think we’re going to see a few standards for satellites and rovers. For example- rovers around 10kg, 100kg, or 1000kg. And variant A, built for .1-1g, variant B for .01-.1g, etc. so you’d be able to have economies of scale to have rovers on tons of bodies with either no or minor modifications between them.
Same with satellites- have a few designs and pick the same ones for similar missions. That way you don’t need to reinvent the wheel for each object you want to visit.

>>14793720
Also, I think this is where relativity’s 3d manufacturing could be huge- make parametric changes to standardized designs. I.e the guts (electronics) all stay the same but the wheels, chassis, suspension all get an input of the target gravity and designed as derivatives of the base design. Thus- optimized for their environment without increased manufacturing cost or testing.

I just want a seismic array on the moon

>>14793760
and a yuuuge lunar mortar

>>14793720
>That way you don’t need to reinvent the wheel for each object you want to visit.
Biggest point right here, especially for orbiters. We should have orbiters all over the place, both for surface mapping and scanning and as communications nodes between each other and down to surface probes.

Anytime is a launch window if you throost hard enough.

>>14793783
When I think "goddamn that's a gigantic beer keg" and not "wow cool ring segment" I know where I need to be tonight

>>14793760
You're thinking too small. I want lunar rally racing on the moon

>>14792410
By them defining roaming so that they can charge you for it.

>>14792513
>>trusting crazy
>You're crazy so that fits.
Be fair, there was no not-crazy option there.

>>14792590
This.

His pr problem is, his exploding rocket, or even a successful launch, will be over while Artemis has weeks of flying past the moon and shit. Everybody but the most deluded fanbois will notice that Musk is still farting around with his CGI-based meme rocket while NASA is orbiting the moon, actually doing the things that he just talks about..

>>14792940
Nah, he'll just announce that he is buying it then wiggle out of it.

>>14793838
go fever: the post

>>14793023
Why? If it blows up because poor design or something, that's one thing. But if it is a good ship that can do the job, wrecking it by tornado would be a waste. Or do you not give a shit about space unless it also comes with Musk's "secret sauce" for you to guzzle?

https://twitter.com/SciGuySpace/status/1563247843854663680
>Speaking of the Artemis I launch window, which runs from August 29 to September 5, let's hope the SLS rocket gets off the pad sooner rather than later. The Atlantic tropics are heating up, and we could see some threats to Florida starting about 8 to 10 days from now.
Here's how Starship can still win

>>14793136
Unless you mash them into a paste and smear them out in a very thin layer.

>>14793853
Scamship

>>14793452
If Artemis mission succeeds, it will be Musk needing to catch up.

>>14793515
f

Stormin

>>14793849
Laugh! Now Musk fanbois do a 180 and claim NASA is moving too fast... they literally have no shame.

>>14793874
Even if Starship launches next year it'd still be ahead of SLS by half a decade

>>14793880
cope: the post

>>14793880
When (if) Starship launches, we will have already seen the other SLS variants in operation. No one will be impressed by Musks paltry effort

I hope the big orange rocket explodes and then gets cancelled.

would be funny in a schadenfreude way

>SLS explodes
>Starship explodes as well
I want this

>>14793914
Great, now I'm picturing thunder and lightning with every mention of SLS, like in Young Frankenstein

>>14793869
Raptor not looking so good nowadays . . .

>>14793907
Sure. When Starship explodes, it's a couple months until the next attempt. When SLS explodes, holy moly.

>>14793907
>Earth explodes as well
yeah

>>14793565
>Naming a rocket engine Krystal
Extremely based. I hope she makes it to space.

>>14793914
Needs this audio
https://www.youtube.com/watch?v=bG-Ml_EN-wU&ab_channel=TheTabernacleChoiratTempleSquare

>>14793917
>>14793937

I see you niggas on /k/

>>14793937
Great, now I want to play Rollerball

>>14793042
>99 tons to LEO
payloadlet

>>14793965
> Muskrat believes the hype about Starships payload
manage your expectations downward, it won't sting as much when Elon admits its 80 tons to LEO

>>14793978
It's physically impossible for Starship to have less than 100 tons of payload mass capacity.

>>14793978
I want my 300-ton-to-LEO rocket (550 tons in expendable mode), Elon, where is ITS?

Does anyone have the meme with Musk looking incredibly angry at an Estronaut interview with Bridenstine and him?

>>14793986
Wait till he has to rethink the TPS from scratch. And tbqf 80 tons payload in a reusable vehicle is still excellent

>>14793993
>And tbqf 80 tons payload in a reusable vehicle is still excellent
and the copium begins

>>14793926
>couple of months between starship attempts
anon...

>>14793989
Elon secretly took Zubrin's advice and is building mini Starship. It's just that mini starship is actually mini ITS, and it's 9m diameter. ITS first flight NLT 2030

>>14793993
>Wait till he has to rethink the TPS from scratch
They won't have any serious issue with the TPS. They may lose two or three during reentry testing then they'll get it working with some damage after tower catch, then after a few of those they'll get the TPS working with no damage during launch or catch.

>>14794007
You're right, more like a couple of weeks.

I will be working for the Space Force now. I will direct funds to space lasers and I will make sure the lasers fry the earth :)

https://youtu.be/Okw3R9pspPc?t=2582

>>14794039
Thank god.

>>14792853
>did the chisel do the work or did I?
The chisel
>did the horses do the work or did the woodsman?
The horses
>did the slaves do the work or did the driver?
The slaves
/thread

>>14794039
are the lasers a decent choice to space-planetary warcraft? Assuming we have for example the energy of something like the iss. because the atmosphere and stuff

>>14793992

https://youtu.be/-vqJzg1LdqQ can someone please explain if this is a scam or not? Apparently they’ve been using suborbital balloons to bring payloads up for universities and the like but would the airship to orbit concept here really work?

>>14794065
>Assuming we have for example the energy of something like the iss
So like 100kW of electricity per laser? Yeah that'd fuck up a lot of things on the surface. Including people.

https://youtu.be/5OLAx3hQ-DA

>>14794070
thanks. Holy shit we reached a "first shoot wins" scenario again but with future space wars.

>>14794089
The biggest threat of space lasers is boost-phase intercepting ICBMs right now. That's why nobody's gone public about their efforts, if any exist. Once that's out there, the only possible way to beat laser intercept is to fire EVERYTHING at once and hope something gets through, which of course raises the risk of strategic nuclear exchanges.

>>14794057
In that case, why doesn't a shed full of chisels produce sculptures, a barn full of horses deliver timber, or a continent full of niggers produce civilization? Really makes you think

>>14794093
That's why you need a gorillion lasers up there

>>14794070
>So like 100kW of electricity per laser? Yeah that'd fuck up a lot of things on the surface
Depends on a few factors, such as beam collimation and diameter. 100 KW spread across a square spot just 18 meters by 18 meters would pretty much exactly match sunlight intensity, so you need to be able to do significantly better than that in terms of spot diameter from several hundred kilometers above the surface. Doable, but not trivial.

>>14794039
the real strength of lasers is in pure space stuff, atmospheric attenuation is a bitch-you can get away with using masers in some cases but you need big satellites that are rather noticeable targets.
PROCSIMA style self-focusing solitons are sexy af for in space combat

4K confirmed youtube

>>14794207
it's a 1080p broadcast retard

>>14794211
>We'll be streaming the launch of @NASAArtemis
to the Moon in 4K on @YouTube

>>14794066
Thanks, it's perfect

>>14794245
i mean 720p

>>14794272
meant for >>14794219

>>14794274
to the Moon in 4K on @YouTube

>>14794277
480p

>>14794279
Listen pal I don't make the rules

heres the stream https://www.youtube.com/watch?v=CMLD0Lp0JBg

>>14794283
Wait why is it 1080p for me, how do i get 4k

>>14793651
It's above 1.

>>14794287
click the gear -> quality -> scroll up -> 4K

>>14794283
that's just the preview video, the actual stream legally cant be 4k or 1080p

Need IDs on this board

How can we stop SpaceX?

>>14794361
nevers

>>14794361
then we can ban you

>>14794362
> Was suppose to have launched a year ago

its already done.

>>14794383
WOW, we need to post this image all over the internet. If people saw how embarrassing this is, they would NEVER take Musk seriously again

>>14794344
>the actual stream legally cant be 4k or 1080p

>@NASA

>We'll be streaming the launch of @NASAArtemis
to the Moon in 4K on @YouTube

>>14793917
>"von Braun!"
>*Horses neigh*

are you folks excited for em-1?

>>14794391
anon, you cant keep doing this

>>14794400
I can't wait for the explosions. Don't care whether they generate thrust, RUD, or both though.

>>14794383
>>14794390
Reminder that SN9 flew successfully

>>14794400
>pepeshuttle shat all over the space industry for decades
>wojakorion has been waiting decades to be brought to a launch pad and in the mean time has been made irrelevant my commercial crew capsules and private enterprise
fits surprisingly well

>>14794406
not gonna happen

>>14794418
>*sharts burnt rubberized-aluminum-chloride PLOOOMS everywhere*
>*drops SRBs in the ocean*
>*scatters fluffy orange Kesslerbait all over low orbit*
Clean it up, NASA.

>>14794422
You think it'll scrub and never launch?
Explosions will happen, whether they propel the rocket to orbit or tear it asunder is still unknown. They're going to light it, we'll see what happens next.

>>14794415
Pretty sure that fuckin thing exploded into a trillion pieces

>>14794415
>this is a successful flight, ready for OFT

>>14794400
wonder if Big Jim will be there

>>14794426
Why do you think that? I think she will succeed, perfect flight direct to the Moon and back

>>14794454
Like I said, the explosion may propel it to orbit perfectly.

>>14794428
The cirno rocket memes have been powerful.
>SN9 was a baka
>LV0009 was the strongest Rocket 3 of all

>>14794494
no harm will come to her

>>14794501
cirno is cute

>>14794502
Hold on, I'll shake it again.

>>14794406
A rocket engine is not a controlled explosion, that's drivel parroted by the IFLS crowd to make the machines seem more impressive

>>14794428
It FLEW successfully. It didn't land right. Tipping over would affect the ability to pressurize the tanks and launch, if it was gonna affect anything.

>>14794435
It's not flying in that image

>>14794627
Not successfully, no.

>>14794632
The instant the engines tried to ignite it was landing, not flying. It flew successfully right up until it tried to land.

>>14794435
Is that a Kippah? I didn't know Starship was Jewish

Is it me, or does the foam on SLS look… asymmetrical?

Is that a bad thing?

>rocket fucking explodes
>it perfect :)

>>14794648
It was perfect until it tried to land :)

>>14794646
Also, why is SLS orange? Is it possible to make it white like the Saturn V?

>>14794656
with paint yes, but it would add roughly 200kg of mass, which means nothing because SLS will never launch even close to its maximum LEO payload, and mass on the core stage doesn't matter for BLEO performance anyway. Blame mass autism.

>>14794656
The paint adds multiple extra tons of dry mass so they left it off.

>>14794646
It's straight up kino

>>14794660
it adds about 10 tons

>>14794662
>multiple extra tons of dry mass
no, more like 200 kg

>>14794665
No, 200kg

>>14794656
They wanted to, but it turns out painting adds literally tons of mass, making SLS T/W ratio less than 1

200 tonnes? Yikes, that's a lot

>>14794660
>>14794662
>>14794665
>>14794666
>>14794667
>>14794670
>>14794671

>>14794671
Now you know why they stopped painting the last orange tank. STS-1 nearly crashed

Throwback

>>14794673
STS =/ SLS

>>14794677
It's less than 50% more surface area. Call it 600 kg of paint.

>>14794680
you forgot about inflation

>>14794680
It's not that easy in painting

Sugar coated bros..

https://twitter.com/csi_starbase/status/1563285418535428097

>>14794693
I expect spacex will fail. i implore all these spacex stans temper their expectations, or else they might kill themselves

>>14794673
Some quick Google-fu. Assuming the ET as a cylinder, its surface area is about 14500 square feet. One gallon of paint covers 350 sqft, so you would need 42 gallons. White latex paint is 10 lbs/gallon, so it would take about 420 lbs to paint the ET, ~600 lbs so it seems legit.

>>14794671
200kg
That's average Murican astronaut

>>14794660
Wrong.

Every extra kg of mass thats carried up requires a total fuel/propellent+the kg of mass of the extra that comes with a rough 2x initial mass. So 200 KG quickly becomes 400 KG of wasted mass payload. Which still doesn't a lot, but that's $10 million worth of payload that Rocketlab charges + the cost in paint/fuel itself.

>>14794646
It becomes more even as the foam gets shaved off by aeroforces at max-Q. This saves 350,000 man hours during manufacturing down at Michoud, as technicians don't have to worry about accuracy.

>>14794725
I would bet the cost to pain shit on SLS is higher than the weight in gold

>>14794686
The paint cans are real. You've seen them down at Sherwin Williams.

>SLS launches once a year
>Falcon Heavy hasn't launched in 3 years
...

Throwback

>>14794778
>Falcon Heavy has launched three times
>SLS has never launched
...

>>14794855
now you're just cherry-picking

wait so SLS is going to beat starship

>>14794879
Likely, but the entire SLS/Artemis situation is like the old dilemma with the IRA - NASA needs every single launch to go right. At least through, say, Artemis 3.

SpaceX just needs them to screw up once.

>>14794879
the only thing SLS will beat is the record of the most expensive firework kit.

>>14794898
if it fails the failure will be boring. Like 2nd stage burning slighly wrong and it is in a bad orbit. no kaboom

>>14794903
Failing at failure? Typical NASA.

>>14794855
SLS is the most powerful rocket ever built
>>14794898
not gonna happen
>>14794879
Yes

>>14794930
Jesus Christ how does the artstyle just regress over time

>>14794946
lol it's just bad art anon ^_^

>>14794946
over time?

>>14794930
>SLS is the most powerful rocket ever built
N1

>>14794970
GG3R

>>14794970
100% false

>>14794930
it would not piss me off that much if the art would be at least a bit decent, but fuck i feel like at 2007 deviantart sometimes here

>>14794988
i'll take what i can get, cute girls is cute girls.
why dont u draw me something anon?

>>14794676
A more innocent time when neither the president nor Musk were shitposting on Twitter 24/7.

>>14794930
>SLS has congenital clubfeet
fitting

>>14794656
they could paint it but there's no point, it's going to the bottom of the ocean anyway and there's not even any concern of foam strikes since the spacecraft is on top this time

>>14794981
It's quite true, I'm afraid: the N1 had considerably more thrust at liftoff than SLS:
>45,400 kN
>39,000 kN

>>14795091
If we're going by thrust that nuclear test plate probably wins

>>14795091
Yeah, sideways.

>>14795091
SLS is considerably more powerful because it works perfectly the first try

>>14795098
That one's closer to a cannon than a rocket

>>14794970
N1bros.. we're still ahead. But I'm worried SLS may steal our non-nuclear explosion position, since I think the mixture of its fuel would deflagrate much more promptly compared to our explosions where a small percentage of it actually combusted

>>14795106
There's a lot of ways you can couch SLS against the N1
>Most powerful rocket to make orbit
>Most capable operational super heavy lift launch vehicle
>Most powerful man-rated launch vehicle
etc

>>14795106
> SLS may steal our non-nuclear explosion position
N1 never had that position even in the 60s. not even fucking close

Has there been any hint of what to expect in terms of post-launch coverage? A livestream from Orion would be rad, even if it can't be oriented for a good view at all times.

>>14795115
A livestream from Orion would probably set the launch back a year.

>>14795114
I didn't say first position. I said "position"

>>14795115
There's a site/app to track Orion like with webb and the mars rover launches, but I couldn't find a link to the actual thing on their blog post. Probably not online yet.

>>14795120
At the very least they better have some good cameras taped to the windows so we can watch the footage after it lands.

>>14794115
kek

>>14795115
>Mission duration: 39–42 days (planned)
I highly fucking doubt it

>>14795144
doesn't have to be a 24/7 stream, just streaming the approaches and return to Earth would be cool

>>14795144
Hnnngggg

>>14795144
Will the bigger second stage eliminate the need for this semen slurping trajectory?

>>14795133
SLS-Orion has multiple 4k broadcasts from all angles for the entire duration of mission. The kino will bring all of /sfg/ to their knees as they in unison utter
>i apologize...sls-sama

>>14795146
>streaming the approaches and return to Earth would be cool
NASA would be idiots to pass up the opportunity to promote the hell out of an image of Earth from deep space. Like Blue Marble or Earthrise. They could get normies excited about spaceflight again.

nice to see all the sls excitement on sfg. i grew up watching the space shuttle live, you new kids now get to experience what a real nasa rocket launch is like. get ready to be blown away!

>>14795166
I'm excited for the failure
One of my earliest memories of the shuttle was when it blew up on reentry

the moon? we've been there

>>14795192
Did they ever do a full duration test of all the engines?

>>14795192
minor sensor anomoly

It apears NASA has run out the clock on HLS option B. Congress lost interest and now option B will never be awarded (which is good)

>>14795163
>NASA would be idiots to pass up the opportunity to promote the hell out of an image of Earth from deep space.
If there's one thing history has proven, it's that NASA consistently miss or mess up PR opportunities when it counts

artemis 3 is publicly set for 2025 but what's the realistic date?

>>14795330
Everyone apart from NASA says NET 2026.

>>14795163
>NASA would be idiots to pass up the opportunity to promote the hell out of an image of Earth from deep space. Like Blue Marble or Earthrise. They could get normies excited about spaceflight again.
inb4 the only publicly released images of Earth are all composites, just throwing more fuel on the retarded flat earth/fake moon landings fire.

They've taken a few pictures of the entire Earth over the last couple of decades using satellites and probes on weird orbits and trajectories and every time they've been composites. I'd kill for a decent singular photo.

>>14794618
That is what it is though.

remember when we thought starship was going to orbit last year?
remember when we thought it would be this year?

>>14794677
SLS actually has an additional upper stage now though. Wouldn't that influence how the weight of the first stage affects payload mass?

>>14795490
August 2021

>>14794930
Is that the ULA pad?

>>14795144
What the fuck is this space ninja fighter plane bullshit?

>>14795490
What's holding them back, is it just the permit or is the ship shit? Maybe they'll let SpaceX fly it after they launch SLS first

>>14795567
It's just the launch license from the FAA.

>>14795573
>allowed to launch? (only circle 1 (one)) yes no
>"holy shit this is hard. i need more time and government money to think about this."

>>14795573
have they requested it?

>>14795297
>it's that NASA consistently miss or mess up PR opportunities when it counts
Not true. They didn't put Big Bird on Challenger

>>14793195
>>14793205
>>14793300
>>14793320

>>14793195
>>14793205
>>14793300
>>14793320

>>14795677
go back

>>14795673
>>14795677
Nice one, anon.

>>14793664
>If I were me
based non-referring term poster

>>14794039
gamma ray lasers, naturally

>>14794361
Just namefag so you’ll be filtered out automatically. Thanks in advance!

Why don’t people wear ESA/POCKOCMOC/JAXA/etc. merch like people wear Nasa merch all the time?

>>14795836
because the nasa logo is public domain, anyone can use it for any purpose

>>14795721
I don’t know what you’re talking about
I never forget to upload the image and if I did I’d never admit it

>>14795836
Apollo 11 is the largest single event that has ever taken place, the vast majority of the planet all watched together as men walked on the moon for the first time. Everyone has seen NASA and the NASA logo.

>>14795836
Actually just NASA operative jealous of people having rockets that work.

It's not that easy in clocketry.

>>14795850
>Actually just NASA operative jealous of people having rockets that work.
Don't be rude
WE
ARE
Going?

>>14795865
>WE
>ARE
>GOING
to steal rockets from other sectors of the US government.

>>14795865
I hope that either this thing succeeds without any major problems, or that it fails spectacularly due to some tiny development issue that was mentioned a couple of years ago but was forgotten.

>>14795876
It'll make it into orbit, then have some random valve or electrical issue forcing a return. NASA will loudly crow about it being a great success.

>>14795870
>you've gotta use SRBs
>otherwise Northrup Grumman might be sad
>you don't want the highly respected creators of the LGM-35 Sentinel to be sad, do you?

It's going to work perfectly, but that doesn't matter because they decided to bring some corporate consumer "AI" garbage on board.

When Starlink?

>>14795884
>LGM-35 Sentinel
>$13.3 billion 10 year sole-source contract
I'd say I'm surprised, but this exactly what's expected from the MIC

>>14795889
Stop baiting (you)s with your shitty drawings, faggot

>>14795889
Every few days

>>14795893
Who else were they going to buy a new ICBM from? All the modern designs are solid fuel and NG ate everyone else who had any experience working with solids.

Umm nuclear power bros? I thought we were winning

>>14795889
9:52PM at 39A

>>14795914
Stop replying to my posts with your shitty whining, faggot

>>14795920
I meant specifically today's launch.

>Anime schizo plainly giving himself (you)s again while reddit spacing

>>14795954
go back

>not using a capital letter means i'm totally a different person tee hee

>>14795960
projecting schizo

>>14795937
We kinda forgot that delaying critical infrastructure maintenance during corona could cause problems.

>>14795937
Nuclear still being around after decades of beating with massive severe regulations, slow approval of newer, more cost-efficient designs and one of the largest fear-mongering campaigns humans have ever witnessed is already an amazing feat.

>>14795973
dumb shit like this wouldn't happen in a spacer society. the decisionmakers would get shoved out the airlock the moment the ink touches the paper.

LIVE Artemis 1 briefing
https://youtu.be/21X5lGlDOfg

>>14795937
I thought the frogs were the example of good nuclear power practices, what happened?

>>14796049
too little supply to meet demand

>>14796049
Terrible time for scheduled maintenance at some plants, one manufacturer fucking up some production batches forcing plants to wait for them due to strict requirements, and a ton of other problems. It's the perfect storm for France.

Is for all mankind actually realistic? Can having a mining station on the moon actually be profitable? What were they mining again? Helium? I don't see a future in spaceflight if the whole reason astronauts go there is to show off. There has to be some profit incentive for it.

>>14796066
I always suspected convergence of calamities was real, now I'm convinced.

>>14796095
Season 1 tries to be accurate, by season 2 that goes out the window and season 3 has SSTOs that go from Earth to Mars.

>>14796095
Lithium is the thing they were fighting the Soviets over in Season 2 IIRC

In Season 3 they're harvesting regolith for helium-3 because fusion power exists and causes a major timeline deviation because oil wars and oil money never happened

>>14796095
Improbable economics and improbable scenarios for the show

How many of you are actually technocrats?

>>14796178
im a democrat

>>14796095
Space based solar power makes more sense than the economics the show tries to make seem plausible.

They don't go to show off. The go because space is a very scenic backdrop for an identity politics based melodrama.

>>14796185
Sad

>manbun

>>14796192
Why didn't /sfg/ send an anon to the press briefing

>>14796199
Because I wasn't being paid to go

I don't travel unless I'm getting paid, especially if it's Florida the coof capital of the US