/sci/ - Science & Math

Here's your starship

>>15526884
Voyeur edition?

I hate the metric system.

>>15526900
I hate you too

Can someone edit a smug pepe janitor and crying scientists?
I have no art skill whatsoever.

>>15526904
m-m-mister metric? is it really you?

>>15526904
A-Am I speaking to the metric system right now?
I have a bone to pick with you -- "cycles" sounds waaaayyyy better than "Hertz".

>Three center Raptors of Booster will fire at ~50% thrust during hot staging

>>15526910
WTF BROS

YOU GUYS FUCKING TOLD ME IT WAS IMPOSSIBLE AND THAT MUSK WAS LYING!!!

HOW ARE THEY ABLE TO THROTTLE THEIR ENGINES TO REDUCE THE STRESS TO THE BOOSTER WHEN THEY ARE HOT STAGING?

ISN'T IT AGAINST THE LAW?

>>15526925
10% payload increase directly due to hot-staging is impossible. Elon lied to your fucking face

>>15526907
>putting 20+ years of research in one freezer
>without even a UPS

>>15526938
Tell us why my dear concern troll.

>>15526907
>>15526949

>>15526907
>>15526949
>only 1 million in losses
pff what are they crying about? also fuck academia.
>muh bacterial cultures
holy shit do something useful for once

>>15526949
Well the title did say he was reacting to "annoying alarms" so it is possible they did have a UPS system and it was active, warning that the power had been lost, and this was the annoying alarm that the janitor silenced.

Labs are so anal about security and access and then give all access keys to people they actively look down upon just because they have to have someone else clean up after them, they are too good for that.

>>15526889
taking pics of the universe when she was still young, small and hot

>>15526910

>>15527002
they should just keep all the booster engines and ship engines firing and get 100% payload increase

>>15527019
SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP SHUT UP

>>15526938
>cutting out 30 seconds of unpowered tumbling low in the atmosphere is useless!!

>>15527022
in reality it's about 5 seconds tops if they did it right. they fucked up majorly during IFT-1 and yeah it just kept tumbling endlessly, retardedly.

>>15527024
I don't think there's a way to spin it up quickly without requiring excessive strength or really heavy and powerful reaction control.

>>15527037
not sure what you're imagining but the stack should only rotate slightly to fling the ship.

There must be a reason why they didn't do hot staging right from the start

>>15527058
Buckley...

>>15526884
So the apollo program left a bunch of film cameras on the lunar surface because of mass constraints for return. I’m wondering if they are theoretically still usable if you retrieved them and loaded up a cassette of film

>>15527074
They should still work if the important plastic bits are covered from UV. If they were not protected, you'll end up with a bunch of metal and glass parts. Not a lot of atmosphere to cause corrosion.

>>15527054
Because it's bad for reuse and adds mass. but at this point elon doesnt give a fuck about reuse, they just need to get the fucker to orbit. improving reuse will be figured out later, and wont be attempted for years

>>15526900
I made fun of people using feet&inches on a science board like 4 threads ago and this nigga has bitched about it ever since

>>15527094
I HATE the metric system.

>>15527094
to be fair, metric is pretty soulless. not made for real world sizes. imperial is anthropocentric, as it should be.

>>15527081
>Because it's bad for reuse

It really isn't

>and adds mass

It lowers mass, the reason it has fallen out of use is modern rockets can restart their engines so the equipment that could be deleted is still needed.

>>15527106
>It lowers mass
they are literally adding a whole new ring and shielding so they dont fuck the booster. if they want a resuable rocket WITH hot staging, it adds mass

>>15527109
But now the booster is closer to orbit so they need less energy.

>>15527113

>>15527109
Try responding to the entire paragraph.

For Starship the improved performance will more than make up for the additional ring section.

>>15527118
I

will

try

responding

to

the

entire

paragraph

another

day

>>15527118
>improved performance
>throttle the engines to fuck
>only 3 running
elon is doing this in a desperate attempt to reach orbit, not because it's a long term solution

>>15526900
>>15526884
cringe

>>15527101
>anthropocentric
just like base 10

>>15527058
>Shit the first one crashed
>Don't worry, we'll send another one up next week and just bury the first one

>>15527123

>>15527127
Humans should be genetically modified to have 12 fingers.

>>15527123
Throttled engines on the Booster at the moment of hot staging is not Starship in freefall for several seconds as with normal staging.

We better get some cislunar EVA kino from Gateway

>>15527127
base 10 is not inherently anthropocentric because it is not based on any essential or unique feature of human beings. moreover, humans have used and invented other bases besides 10, such as base 2 (binary), base 8 (octal), base 12 (duodecimal), and base 16 (hexadecimal). base 10 is an arbitrary choice that could have been otherwise.
a more anthropocentric alternative to base 10 is base 20, based on the number of fingers and toes that humans have. base 20 is also known as vigesimal, and it has been used by some ancient and modern cultures, such as the Maya, the Aztecs, the French, and the Inuit.

I am so used to base 10 I literally cannot conceptualize other bases

>>15527143
it's the same thing because they are adding mass

>>15527154
And a 10% performance gain is substantially more than the performance lost by adding a vented ring section.

>>15527152
alternatively, you are cringe

>>15527162
yeah I guess those numbers add up if you're a liar

>>15527162
If it's more performance then why they didn't do it from the start

can't they just stage like normal rockets????

>>15527174
this pretty much refutes any back-justification anyone can come up with. musk could come out and say "we are switching back to carbon fiber" and every musklover will contort themselves happily to fit the new paradigm in their mind after lauding for years the genius of switching to steel and how bad carbon fiber is. there is no shame or self reflection

>>15527174
Because the last American rocket that hot staged was designed before SpaceX's engineers were born.

25% raptor failure rate is a literal non issue. They have this under control

>>15527191
pretty much the whole universe happened before spacex engineers were born

>>15527184
You cannot refute the given reason or the math so clearly there must be a conspiracy because you cannot be wrong.

>>15527200
there is no math unless you consider numbers pulled out of musk's shitty ass math

>>15527195
>all Raptors are identical and their design remain unchanged since production started

>>15527184
One good thing about the sub fiasco will be disdain for carbon fiber novelties

>>15527202
The math is why a rocket gains performance when it doesn't free fall for several seconds when staging.

>>15527208
I once thought carbon fiber's only use was for adding goofy panels or flaps to sports cars

>>15527212
it's also good for COPVs

>>15527214
a submarine is just one giant COPV. now that I think about it, why does Neutron get a pass?

worst thread this year

>>15527211
There is ZERO historical data that implies any payload increase whatsoever with hot staging, let alone 10%. Kill yourself newfag

>>15527218
>a submarine is just one giant COPV.
pressures are opposite, cf is only strong under a tensioned load.

>>15527220
It's going to get way worse, my friend.

what was he thinking bros? he tried to be the elon musk of the sea. had he not been tankwatching?

>>15527239
Diversity hires

This is now a Blue Origin Victory thread

>>15527245
guys i fr*cking love blue origin so much...

For the benefit of Earth. For all mankind.

>>15527247
Is that stainless steel? LMAO
Do they not have any actual talent in making rocket? Is it just copy pasta of SpaceX R/D?

>>15527222
You haven't actually looked.

>>15527227
>cf is only strong under a tensioned load.
disagree

>>15527251
Honestly no idea what it's made of. Maybe someone should check L2

>>15527245
BE-4 superiority

>>15527252
I actually have looked.

>>15527262
based fact checker putting lying Musk in his place. People that browse here should know better than to take Musk at his word lol

>>15527252
Not him, care to post what you found since you imply you looked? I don't care enough to look myself because we have no idea just how autistic the stage sep spin was supposed to be so the 10 % claim is unverifiable anyways, but if someone has done the trades that'd be interesting because I do doubt that it'd gain 10 % over more traditional staging like F9.

>>15527261
https://www.youtube.com/watch?v=hdS4azOaF2M
THE BE4 ROCKET ENGINE IS A 550,000 LBS OF THRUST LIQUID OXYGEN LIQUID NATURAL GAS CLEAN BURNING FUEL (AHEM NOT CH4/METHANE) OXYGEN RICH STAGED COMBUSTION ENGINE CYCLE. THESE ENGINES WERE DESIGNED AND BUILT FROM THE START TO BE REUSABLE (UNLIKE THE MERLIN ENGINE). THE BE4 IS GOING TO BE THE WORKHORSE FOR THE 2020s AND THE 2030s

You will never leave Earth, there is no "space" only a dome above us. You are all idiots who believe anything the governent tells you.

>>15527283
BO will make a lot of money selling these to SpaceX

>>15527281
Hot staging removes the mass of equipment like pushers and ullage motors, it wouldn't increase performance by 10% but rockets don't normally spend more than a few seconds with engines off because they don't have upper stages that weight 1000+ tons or require time for backflip tosses.

>>15527288
Spongebob has peepee?

>>15527294
So you admit there is no data on this and you are just gonna go with what you imagine the data would be?

>>15527295
Heres another

I'm about to post a reddit screenshot

>>15527294
Obviously, but there already were no pushers and they might well have to add shielding on the booster so we don't know how the mass compares so it's just guessing. I thought you had actual data or at least calculations from some trade study.

>>15527305
Kys (kill your self)

>>15527305
Do it before I poop

>>15527306
>>15527297
>demanding anon provide hard numbers to refute a claim you made without evidence

>>15527313
The claim from Elon is 10% payload increase. He has no evidence for that claim, and nothing in the historical record indirectly supports this claim. Therefore he is lying unless proven otherwise

>>15527314
Fuck off

>>15527314
Enjoy your vacation in that sub anon.

>>15527074
If the gooberment still has some of the cameras used for the famous earthrise photo or apollo 8 or something, they should pull it out of the smithsonian archives and take a crew photo of Artemis II. Would be cool to have two historic images taken from the same exact camera

>>15527314
Lol

>>15527315
The claim is that hot staging improves performance by never having the rocket in a period of freefall.

mods have mercy on my IP

>>15527327
by 10%, which is bullshit and an obvious fabrication

>>15527327
The burden of proof is on you and Elon Musk

>>15527332
By 10% in Starships case as it would have spent an extended period in freefall doing the flip maneuver.

>>15527327
You're arguing with CSS lmao

So how much useless mass is the heat shielded interstage going to add to starship?

>>15527339
Elon misspoke. What he meant to say was hot-staging recovers 10% of the mass losses incurred by spin-staging. Basically negligible

>>15527356
15 tons

>>15527357
like when he mistweeted that his car was in orbit round Mars

Does this explain his recent bizzare comments and erratic behavior? Will he troon out like the Wachowski brothers did after getting into ketamine?

>>15527357
I can actually believe this

>>15527365
I love business insider, it's like reading the Onion back when it was good

>>15527365
Absolutely, n=2 is the strongest correlation that exists.

>>15527365
https://www.webmd.com/depression/features/what-does-ketamine-do-your-brain

>didnt go to the first starship launch
>want to go to the second
hope its soon

>>15527365
elon k-holing

>>15527376
Groundspace
Galaxyspace
iSpace
XsPace
Underground Space
Planet Space
Earth Space

>>15527254
Ok Stockton Crush

they haven't fill the top half with concrete

>>15527385
They will wait a month for it to cure

>>15527174
Because they didn't realize how stupid the flip was until now

>>15527387
unironically, musk was probably so embarrassed by the tumble he marched right into the chief engineers office and told him to "fix it or else youre fired!" and then the engineer said some bs to placate elon..."oh it will grant us 10% increase sir" lol

>>15527393
Shouldnt you be arguing with retards on Twitter instead of here CSS? You dont make money posting here.

>>15527397
we dont do it for the money

>>15527397
>everybody I don't like is CSS

>>15527365
Elon microdosing rumours have been around for years, so if he's doing it's not recent

>>15527365
https://erowid.org/experiences/exp.php?ID=116163

>The intensity and immersiveness of the trip progressed exponentially at this point and it wasn't long before I felt complete and utter detachment from my body. The complete severing of the mind body connection was something I had never even conceived as possible, and the sheer intensity and suddenness of its onset was quite jarring.I really have no other way to describe the mind state I was in other than as it felt like a completely separate dimension/universe. It was a little like the book Flatland by Edwin Abbott Abbott, where a 2-D square is taken to the 3-D world of a sphere.
It was a little like the book Flatland by Edwin Abbott Abbott, where a 2-D square is taken to the 3-D world of a sphere.
As time went on the hallucinations I experienced shifted from being a visual ordeal and more of a conceptual headspace shift.

Elon does addy? I do addy. Elon smoke pot? i do smoke pot. Elon does ozempic? I do ozempic. Elon does ketamine? bet ur ass im aquiring some ketamine

>>15527422
Got a source on him doing addy though? First time I'm hearing this

>>15527426
my mind fuzzy, but i think he was on it during 2018 or some time earlier.

>>15527148
Base 9 and base 19 would be based on our digits, not base 10 and base 20.

adderall/meth is the ubermensch drug

>>15527438
I know a guy who knew a guy who got into a 3 day long gay orgy while on a meth bender.

>>15527422
>Elon does ketamine? bet ur ass im aquiring some ketamine
Say goodbye to your bladder anon

>>15527314
this thread is great guys

https://twitter.com/elonmusk/status/1673684418974609410

https://arstechnica.com/space/2023/06/despite-sanctions-russia-launches-satellites-with-ties-to-west/

https://www.cnbc.com/2023/06/27/spacex-vet-tom-mueller-impulse-space-target-service-economy-in-orbit.html

https://www.thespacereview.com/article/4609/1

>>15527464
Who is this bitch

>>15527469
a woman who has gone to the ISS a bunch of times

>>15527442
Yeah that is known to happen. The therapeutic way to take meth is a single small dose when waking up. It's not possible to sleep some 10 hours after taking it.

Remember how comfy these threads used to be back in the day

only space below this post

EARTH RULES OK

Titan rules

>>15527502
It's because I had a day off. I apologise for my abysmal posts

>>15527127
>>15527152
>>15527179
>>15527195
>>15527214
>>15527245
>>15527261
>>15527289
>>15527291
>>15527305
>>15527314
>>15527356
>>15527365

>>15527536
hey that's my post

>>15527502
What's wrong with this thread? lots of good discussion

>>15527502
It got popular and attracted the reddit niggers.

Rocket Lab is building the second Varda capsule

https://twitter.com/RocketLab/status/1673807137112469504/photo/2

>>15527529

>>15527570
cute girls!

>>15527451
Starship needs a launch escape system

https://www.esa.int/ESA_Multimedia/Images/2023/06/Euclid_meets_Falcon_9_adaptor
make sure to like!

>Arianespace and ESA today announced the signature of a launch services contract for the Euclid satellite
>The Euclid mission will use either a Soyuz or an Ariane 62 launch vehicle from Europe’s Spaceport in French Guiana, with a launch timeframe starting in mid-2022.
>Stéphane Israël, Chief Executive Officer of Arianespace, added: “Six months after being awarded the Juice (Jupiter Icy moons Explorer) mission, Arianespace is proud to start 2020 by announcing a new iconic scientific launch for ESA. With the goal of better understanding our Universe, launching this mission aboard an Ariane 62 or Soyuz is further proof of Arianespace’s ability to offer independent access to space for Europe’s ambitions.”
Epic

>>15527594
Finally. I was getting tired of the positive curvature

>>15527043
the full stack was literally planned to almost do an entire fucking flip before stage sep happens, something like 270 degrees.

>>15527639
That's not true at all. Did you fall for the meme diagram?

>>15527315
he has evidence, but it's restricted by ITAR

Why is Stephen Clark writing space article for Ars? Is Berger fired?

>>15526907
memecraft is a sacred duty that should not be discharged to others. If you think a meme is necessary you do it yourself, which makes you less and less shitty at it every time. pic related my first pepe, and I've gotten good enough one of my memes was once used as the OP of /sfg/. You can git gud too, gimp is free and the road is fun if you make things that make you laugh.

>>15527314
You guys don't get it. Believing is half the battle

>>15527708
Nahh, they're expanding Ars' coverage. Berger tweeted about the opening in the past.

>>15526954
Can someone explain this meme to me, like I see this woman everywhere and I’ve been trying to use context clues but all I can gather is “she doesn’t like seasoning”

Fucking amateur hour in this general, sheesh

https://twitter.com/lexfridman/status/1673836162937417728

>>15527833

>>15527823
Sorry

>>15527833
Musk is gonna kill Zuck :(
I'm a big Zuck fan, not so much Musk...this just doesnt look good for the Zuck against the size and power of Musk

>>15527822
>"she doesn’t like seasoning”

I hope they actually go through with their stupid show fight and there's a fatal accident

>>15527853
I'd fuck her mouth

>>15527197
Many such cases.

>>15527208
Carbon fiber is fine for torsion stresses. Rockets deal with that all the time. But carbon fiber is not a good idea for compression stresses, especially when you're going down to a level in the ocean where you're facing 2.99371T/in^2 in pressure. The Falcon 9s that have flown for over 9 flights are still holding their structural integrity despite being made of carbon fiber composites, despite having hit MaxQ so many times and gone through hypersonic, supersonic, and transonic regimes on the descent flights AND their hoverslam maneuvers on the drone ships and back at land. The sheer fact that not a single booster has failed yet due to structural integrity issues, goes to show that CFC usage is fine as long as the pressure/force regime is non-compressive.

>>15527833
I'm just worried that he's going to annihilate his spine like he did with the sumo guy

>>15527861
Elon can buy a new spine just like before and use neuralink to cure his paralysis

https://www.space.com/ula-delays-launch-vulcan-centaur-rocket-modifications

I went back through three threads and one (1) person made a comment about this. Get your heads fixed, /sfg/.

>>15527365
I bet the government FSOs are stuck with a massive conundrum with that one. On one hand, if Elon's got a clearance, this would disqualify him from one. On the other hand, them disqualifying him from a clearance could cause issues; and/or maybe they're sidestepping that issue altogether and Gwynne holds a clearance and all the natsec stuff is routed through her instead of him.

>>15527872
Thank you for posting this week late article faggot

>>15527872
delays are like anti news
it means real news is delayed

>>15527885
BECAUSE NONE OF YOU DID, EXCEPT ONE FUCKING GUY WHO GOT ZERO REPLIES. I FUCKING CHECKED, YOU DUMB CUNT.

>>15527891
Maybe you should try posting something worth posting. You know, for once

https://spaceref.com/uncategorized/spacex-falcon-launch-vehicle-unveiled-in-washington-dc/

no flickr

>>15527919
Interesting! I can't wait to see what they accomplish

>>15527919
Hello Epsilon Erodani oort cloud poster

hey you read this https://www.thespacereview.com/article/497/1

No.

Hey did you know the Hoover Dam is still curing?

I learned recently that Viking and Vikas engines cool their preburners with total loss water cooling.

>>15527943
BFR is not happening

>>15527455
>Mueller
>tug business
public_bathroom_tug_business.jpg

>>15527455
who

>>15527365
>not phenibut
pleb

>>15527861
He got his spine injury because the Sumo was a huge guy and he LIFTED him off the circle. Thats not gonna happen with Zuck, who's only 155 lb/5'7. Musk himself is prob ~200LB/6'2

>>15527502
Speaking of comfy. Seeing pictures of rovers/probes/people on other planets is comfy to me. Just something about something manmade standing defiantly in an alien environment is awe inspiring and comforting.

>>15527998
Concept art is good too, but it has to be the older paintings. They have that dreamlike quality. The newer cgi renders look too clean.

>>15527961
Wait what I didn’t realize Viking/early Ariane stuff was designed by an ex Nazi. Lol I always assumed Henri Bringer (the designer) was just some french guy

>>15527891
Based knower. If this has to do with V-C officially slipping from Q4 2023 to 2024 then I, at least, posted something about it. But I didn’t provide an image or a link to anything.

>>15527867
hm...
mechamusk

Idk what to do

>>15528025
Open up MS Paint or powerpoint and make some /sfg/ OC

>>15528027
TONITE ON ESEFGEE

>>15528027
im not very creative. no one really likes my OC

>>15528031
Most OC anyone makes will be ignored. It's the one-in-a-hundred that makes creating them worth it.

>>15528028
HAMMOND TESTS A MINIMAG ORION IN A DELHI SUBURB
JAMES COLLECTS ROCKS FROM AN ALABAMA STREAM BED
AND I RETRIEVE THE PERSEVERANCE SAMPLES WITH A RENAULT TWINGO

I love this image

in the early to mid 2010s this used to be like less than a third American and Russia and China were launching more stuff than us

https://en.wikipedia.org/wiki/2023_in_spaceflight

>>15528036
Would using urine for the steel plate cooling work better? The left-over cooling fluid could be used to replenish wet airlocks on Mars.

>>15528034
>>15528027
ok here you go

>>15528070
Beautiful...

>>15527860
Falcon 9 is aluminum, really only the landing legs, some of the interstage components, and the fairings are CF; and the legs get replaced frequently enough that it's not a great example for CF durability. The 'fuselage' (tanks/domes & intertank supports) are entirely aluminum and the engine support structure is all metal too. when F9 is flown expendable it's basically only the fairings that are made of CF.

Also, fun fact: fiberglass actually has a higher strength-to-weight ratio than CFC, but CF has much higher stiffness to weight.

>>15528048
kek

the first Virgin Orbit commercial spaceflight tourism mission is happening on Thursday

https://www.space.com/virgin-galactic-first-commercial-spaceflight-meet-crew

If you do the math a ticket is 450,000, 4 seats = 1.8 million, no way this company will be profitable if they plan one mission every month?

MAGNETIC NOZZLE ELECTRODELESS LORENTZ FORCE THRUSTER

AXIONIC ANNIHILATION ENGINE

>>15528083
Great timing after the submarine

>>15528085
>>15528088
FT&T freaks 'porting everything.

>>15528083

>>15528094
At least Richard Branson isn't on board.

>>15528099
So far, Oceangate has successfully brought more people safely to the Titanic than Virgin galactic has taken passengers to the edge of atmosphere

Atmosphere is hard

The JPL mafia interfered with the QI thruster test satellite that was supposed to launch on Transporter 8

>>15528083
There is essentially no path to profitability for that company

COSMOLOGICALLY COUPLED HAWKING EVAPORANT CLOSED CYCLE

>>15528109
if you are so sure, why is mr branson still invested? if he believes, then i believe

>>15528070
https://www.youtube.com/watch?v=VGF4ibgcHQE

>>15528094

>>15528123
Enjoy holding that bag, my good man!

anyone have a pdf copy of Case for Nukes?

>>15528115
Do you really now?

>>15528132
do I what

>>15528027

>>15528139
me on the right

>>15528066
The urine can be provided by the passengers.
Everyone has to pee at the critical moment or the staging will fail.

What will Jarvis look like?

>>15528151
starship

>>15528115
He's already had one space company go belly-up and he's had numerous other ventures tank in his long career. Branson doesn't have some sort of magic touch, just enough money to not care that much when one of his four hundred companies dies.

>>15528151
isnt this it? >>15527247

So basically, the Shuttle hot stages

I wonder if the crewed capsule that BO is working on will be Goddard derived or will be based off of Jarvis

I could imagine Jarvis being a capsule that is significantly larger than Dragon/Soyuz/Starliner but smaller than say Starship, I feel like Starship would be too big for most commercial stations, maybe a crewed Jarvis could hold like 10-15 people? That in itself would be revolutionary

>>15528176
Images like this make me despair

>>15527872
I thought that was old news, that is why I didn't post it
also ULA, lmaooo

>>15528139
lmao

>>15528070
SMOKE RISES FROM STARBASE

>>15528176
why is the upper stage so fucking big

https://spacenews.com/chinese-company-plans-to-launch-rocket-comparable-to-falcon-9-in-2024/

https://twitter.com/elonmusk/status/1673832186796179456

>>15527930
https://twitter.com/elonmusk/status/1673852066572406784

>>15528350
>MOOOM CAN WE HAVE FALCON NINEEEE!!!
>"we have Falcon 9 at home"
>Falcon 9 at home

>>15527605
https://orbitalindex.com/

https://www.nasaspaceflight.com/2023/06/themis-prometheus-hot-fire-test/

Maybe I missed it when someone posted, this article is from 5 days ago. Engine hot fire for Arianes reusable rocket

> ESA and Ariane Group completed a first hot-fire of their reusable Prometheus engine and Themis demonstrator—the engines are designed to be 5x reusable, with the demonstrator targeted to be fully flight-tested and ready for integration into full scale ESA rockets in 2025

>>15528369

>>15528369
https://twitter.com/ArianeGroup/status/1672167654008782849
(video)

> We just successfully completed the first Hot Firing Test campaign of THEMIS a completely reusable space launcher stage in Vernon!

>>15528369
https://press.ariane.group/arianegroup-a-teste-pour-la-premiere-fois-un-etage-complet-de-lanceur-spatial-reutilisable-8915/?lang=eng

https://www.businesswire.com/news/home/20230621154227/en/AST-SpaceMobile-Confirms-4G-Capabilities-to-Everyday-Smartphones-Directly-From-Space

> AST SpaceMobile announced that its large (and bright) BlueWalker 3 LEO sat successfully hit 10 Mbps download speeds repeatedly with normal cell phones in Hawai’i

>>15528373
Pog

https://qz.com/emails/space-business/1850560346/space-business-lost-in-orbit

> With a tourist submarine sadly lost at sea (possibly without the safety features built into research vessels), Tim Fernholz explores the similarities to orbital tourist missions and their lack of potential rescue options.

>>15528401
>Participants must be informed of the risks
But they weren't informed of the risks since no one actually rated the design. So acknowledging that things might go wrong in the waiver is all they do.

https://artuniverse.eu/gallery/190705-rotation24h
uncompressed video

> Watch the Earth rotate with the sky as a fixed reference frame in this cool timelapse.

>>15528139
Based

>>15528411
neat

>>15528401
>Lack of potential rescue options
Nigger, NASA doesn't even have rescue options. The fuck are these retards always blathering on about?

>>15528465
they are the sort of people who probably think Apollo and Shuttles are still around

>>15528401
submarine niggers get the glub

>>15527437
We have five fingers on each hand and five toes on each foot. Are you an alien?

>>15527208
I'd rather blame the "rated for 1400m but let's pass it off as 4000m" viewport than the carbon fiber to be honest. It was a carbon fiber tube with two titanium end caps and that shitty window.

>>15528494
>Shuttles
Fat lot of good that did for Columbia.

>>15528070
Nailed it.

>>15528530
Likely the test depth of the "shitty window" was below 4000m which led to the galaxy brain CEO to accept it for their dives. Still leaning more on cycle fatigue of the carbon fiber hull.

>>15527943
This post right here is why news article links should always have dates

>>15527943
2005
>Musk envisions that SpaceX could grow as large as 400-500 people, but no larger.
2023
>SpaceX has 9,500 employees.

I assume this means there are over 9000 employees that Musk doesn't see as people, because as we all know his predictions are never wrong

>>15527227
>adds a minus sign
I don't see the issue

>>15528098

>>15527262
I can't believe somebody saved my close-up of Jim's face
Didn't I post that at like the very end of a thread or something

>>15528411
nice try

>>15528531
They needed MOOSE

>>15527227
>pressures are opposite
Except you can't go lower than one atmosphere below sea level. One atmosphere in vacuum compared to almost 400 atmospheres of water is a bit more than merely "opposite".

>>15528070
Stupid frogposter

>>15528577
It's not that easy in composites

>>15528070
>being so obsessed with that one anon mentioning raptor issues that you ad "concern trolling" to your OC MS Paint meme

>>15528070
>>15528139
We are so back

>>15528794
pretty sure it was about the redditard whose favorite buzzword is concern troll

>>15528151
like your girlfriend because it doesn't exist either

>>15526900
I do too, however I hate imperial far more

>>15528844
Exact measurement is for nerds, real men eyeball it.

Today I will remind them

https://www.ge.com/news/reports/the-art-of-engineering-the-worlds-largest-jet-engine-shows-off-composite-curves
>GE will also replace the titanium leading edge that is currently used on GE90 and GEnx blades with steel. “It’s a strong material that allows us to keep the new blade thin in shape to maximize performance,” he says. “If you are an aero guy, thinner is always better. We want the best performance that’s humanly possible.”

Even GE is replacing some Titanium parts with steel.

>>15528847
>exact
>measurement

>>15528880
I'll tell that to the Ocean Gate boss. He will love it. Titanium is expensive as shit.

>>15528911
Those certainly are words

>>15528916
Unless you're counting discrete quantities how do you get exact measurements?

>>15528915
Were you planning on speaking it into the thimble you could fit his remains into?

>>15528941
By feel. What, you can't?

>>15527283
Vulcan, New Glenn, a Third Option....

Exact measurement is an oxymoron

>>15528959
Ok heisenberg

>>15528959
You're a regular moron

>>15528959
Yeah but tolerances and error bars are real

>>15528521
Yes. That's not base 10 or base 20.
Also I fucked up, it would be base 11 and base 21 if we did it based on our digits, sorry.
With 10 fingers we would have one symbol for each finger/number up to and including 10. This 10 is a compound of a 1 and a 0 because we have no individual symbol for 10. That is base 10. Base 11 would be 1, 2, 3, 4, 5, 6, 7, 8, 9, A, 10 (eleven), 11 (twelve), 12 (thirteen), 13 (fourteen), 14 (fifteen), 15 (sixteen), 16 (seventeen), 17 (eighteen), 18 (nineteen), 19 (twenty), 1A (twenty-one), 20 (twenty-two), etc. A is our tenth finger which would be used as ten instead of 10.

>>15527261
This image proves that Musk and Bezos are conspiring to destroy Meta.

>>15528860
This stuff is often done for a reason.
https://en.wikipedia.org/wiki/T-Stoff
https://en.wikipedia.org/wiki/Messerschmitt_Me_163_Komet

>>15528994
Why not do base 0 (most equitable)

>>15528994
counterpoint: someone counting on fingers would use base 10, because it would be unintuitive if two flashes of 'A' was 19. Two sets of 10 being 20 for four hands worth of fingers makes more sense.

>>15529010
That's not how that works. I only used A because there is no equivalent actual number. If we used a counting system based on our digits then we'd have come up with a number for that and that number would be seen as normal, much like the number 9 is.

>>15529014
that doesn't change the fact that 2 sets of the symbol for 10 would be a symbol for 1 followed by a symbol for 9, which is unintuitive. 2 10's being 20 would make much more sense for 10 fingers.
Try it out for base 5 as well, two "10"s (actually 5) make "20" (actually 10).

/sfg/ Shitty Factors General

>>15527822
She makes cooking tiktoks and was constantly on the receiving end of "wypipo don't season they food!" from the usual suspects. In response, she called out the "seasoning police" for whining about her lack of using dry powder seasonings, despite her using fresh aromatics and correctly utilizing the four pillars of cooking. Surprisingly, it kind of worked, and people began making fun of the types who consider proper cooking prep and seasoning to be washing chicken with dish soap and bleach before drowning it in Lawry's Seasoned Salt.

>>15526907
Reading the story is even funnier.
Tl;dr janitor was a dumbass and they are suing the company that hired him because suing him directly would be bad optics

>>15527179
no, starship is not a normal rocket

>>15527314
quantum immortality says he's right

>>15529019
>2 sets of the symbol for 10
ok zerolet

>>15528101
oceangate killed more people though

>>15528366
say what you will but I like ESA's no flashy shit just science approach

>>15529042
God blacks are so braindead

>>15529061
>suing him directly would be bad optics
Retard. They are sueing the company because their insurance cap is $1,000,000.

>>15529086
Cant kill people if you never fly :)

>the prometheus methane engine could find use on our hydrologgs roggit
>but I'm actually talking about a totally different engine

what the fuck is this guy smoking

>>15529099
Sure you can, you just have to try!

>>15529042
Thanks, this is actually funny haha

>>15529042
/sfg/ - Seasoning For Girls

>>15529127
*Grilling
Grilling on Mars.

>>15529042
They should check the batteries in their smoke alarms before criticising others.
>whypipo dont season they air with beeps

>>15529010
but 19 is 20

>>15529100
>A6 originally planned to launch on 2020
go back a few more years and it's
>first launch in 2017
euro space workers are so mind broken by delays they're literally unable to keep track of reality - like, what engines do/don't exist, what fuel they use, which rocket they're for. it's like the mandela effect, except with their own programs. ESA proves multiverse theory is real: the extreme copium density they've achieved rips open bridges to other worlds where ESA is actually successful, causing the employees to have delusions of success and relevancy.

>>15529194
I'm retarded, 2017 is when ESA first claimed a 2020 launch. Please throw me out the airlock

still right about the cope tho

https://www.youtube.com/watch?v=e-43x-H4CNY

>>15529293
Interesting study, apparently from 2002. Throwing in a PDF before even reading it.

I wonder, did they ever consider what it would take to make those engines?
Seems like Skylon with its SABREs is the only air-breathing rocket engine concept that has moved anywhere beyond the drawing board.

>>15529326
have you heard of natural selection?

>>15529326
So, how is this any worse than earth again?

>>15529339
natural selection doesn't look good for m*rsers

It's me again with another spaceplane design.

I've scrapped my other design based on /sfg/ feedback saying it was too large and required too much infrastructure and having too stringent engine demands.

Now I came up with an idea for a smaller medium lift airbreathing SSTO that uses 4 or 5 SABRE cycle engines adapted to run on methalox, though I've also considered using propalox. The orbiter is roughly the size of a Boeing 777 and has the advantage of eliminating the need for spaceports. Instead of using an ogival delta wing setup like on the space shuttle, I opted for a simple delta wing to both reduce the cost of the heat tiles on the underside, and to allow the use of trailing edge flaps and leading edge slats to slow landing speed enough to use almost any airport in the world. The latter also would allow the orbiter to be used as a hypersonic earth to earth transport.

I opted to put the engines on the orbiter's back between the vertical tail fins and just in front of the elevators. This setup would protect them from re-entry heat, unlike the Skylon design that has them on the wingtips.

I picked the name "Andromeda" both to appeal to the woke crowd (female mythological name), and because, surprisingly, I have not found an existing spacecraft design with that name.

I imagined the vehicle being the de-facto workhorse of the USSF, and having both manned and unmanned versions.

>>15529378

Forgot pic like a dumbass

>>15529378
>>15529382

Forgot to mention that this is supposed to both take off and land on a runway. It is not a sled-launched design.

>>15529324
Hermeus is building turbojet-ramjet engines based on the F100 and has demonstrated mode-change in a hypersonic wind tunnel. Their target speed is Mach 5, at which point having a separate set of kerolox vacuum optimized rocket engines could make SSTO possible.

>>15527833
Musk when one of his employees tries to leave early

>>15529426
Walters Musk bio has some gold mine of tidbits regarding employees/Musk interactions

>>15529426
employee trying to leave after 12h day but something is not finished

Vulcan-Centaur is so gay

I wonder how that /pol/tard that said only subhumans use hot staging feels about this kek

https://twitter.com/SciGuySpace/status/1674133237160091648

Everything is delayed. Amazon's Kuiper/Airforce's NSSL Phase 2.

>>15529469
Falcon will launch Kuiper. Lots and lots of Kuiper

>>15529470
Kuiper hasn't book Falcon 9. They don't intend to.

>>15529469
>that interstage truss
VULCAN WILL USE HOT STAGING, YOU SAW IT HERE FIRST

>>15529469
>NET
It ain't gonna launch this year, period.

>>15529472
Neither was Euclid. Nor Europa Clipper. Nor NSSL Phase 2 ULA contracts. Nor OneWeb.

>>15529478
maybe 2025

>>15529469
https://arstechnica.com/space/2023/06/ula-shipping-vulcan-upper-stage-back-to-factory-for-more-work/

https://spacenews.com/ororatech-orders-eight-more-wildfire-monitoring-satellites/

one application you can point to when retards whine whats the point of space

https://spacenews.com/dod-to-invest-in-startup-developing-mobile-space-launch-platforms/

>>15529518
Robotic exploration continues to yield results. Sending people up to drink their own piss is another matter.

https://spacenews.com/sierra-space-describes-long-term-plans-for-dream-chaser-and-inflatable-modules/

>>15529524
sending humans is about 1000x more effective

/sfg/ spacenews feed general

>>15529531
Hey that’s a good one

https://spacenews.com/startup-irocket-wins-space-force-contract-to-demonstrate-rocket-engine/

https://interestingengineering.com/innovation/nasa-lunar-mining-trial-10-years

>>15529545
https://archive.is/20230628132249/https://www.reuters.com/science/nasa-sees-moon-lunar-mining-trial-within-next-decade-2023-06-28/

Pulling this bad boy out of the archives

>>15529552
what rocket?

>>15529554
Vulcan centaur

>>15529555
he cant keep getting away with this

>>15529469
>>15529512
>finally get first stage engines from Jeff Who
>second stage is fucked

https://spacenews.com/sierra-space-describes-long-term-plans-for-dream-chaser-and-inflatable-modules/


>Vice hinted that the company has longer-term plans for Dream Chaser that could possibly allow it to end dependence on other companies’ launch vehicles. “We’re thinking about investigating the right technologies in thermal and propulsion and materials that allows us to potentially think about the staging options that would allow us, for the first time, have horizontal takeoff,” he said. He didn’t offer a schedule for developing that version of Dream Chaser.


How could they make dreamchaser an SSTO? Do the propulsion systems even exist?

>>15529598
The name of it is not only ironic, but rather tragic.
Think about it, Dream Chaser.

>>15529351
rustsuckers will cuck e*rthers simply by being taller than them. E*rther woman will write libidinous fiction about graceful martian men.

>>15529629
lol
>Edgar Rice Burroughs' Martian series inspired Anna Powell's Martian Fantasy, her overwhelming desire to visit Mars and seek the red fighting man of her dreams. One day after years of longing, a mysterious force transported her to Barsoom where she met Vin Or. Together they endured many dangers, and in the process found great love. Will they be rewarded with continued togetherness, or will Anna be forced back to Earth? And if not, can they survive further adventures on a dying world where every creature must kill to live?

Is everyone here aware that the colonisation of Mars
Implies human reproduction at a third of a g
Which most likely won't result in healthy or even viable embryos
Which means a Martian orbital space station dedicated for breeding, pregnancy and early nursing has to be built in order to maintain the independence of the local Martian population from Earth

>>15529634
fuck off retard, every time you make this spurious claim you get deboonked and then conveniently forget about it.
By this point I'm convinced that it's a weird fetish.

>>15529634
well we just have to find that out, not much else to do

>>15529634
Yes,
In the 4 years this thread has existed
We discussed that subject multiple times
It can be done on the ground too
But good thing you are concerned for our independence

>>15529644
Multiple mammal lineages evolved to gestate mostly or completely under water.
1/3 could just not be a problem.

>>15529378
>SABRE SSTO
Am a tard, but my nose says this is too good to be true

>>15529634
The only problem will be that humans born and raised in lower gravity will develop for that level of gravity and will face significant struggle if not outright impossibility of going to higher gravity environments like that of Earth. For example, a Martian trying to go to Earth gravity would be like a regular human trying to go to a 25.8m/s gravity environment.

>>15529469
They're going to have to book Falcon or lose their FCC license

Jeff...

>>15529634
Fuck off nigga; 60 years ago we weren’t even certain if humans had the ability to eat drink sleep and poop in space. But guess what? We can do it. Because we were created by a god who wants us to explore and settle. That means human gestation beyond the earth is possible, is safe, and is destined to happen

>>15528115
>>15528109
i think he's banking on the next iteration, spaceship three, which is supposed to be like starship E2E, but business jet style instead of public jet style like a 747. so you take off from LA in the morning, rocket into suborbital, and arrive in London for lunch.

>>15529629
>woman will write libidinous fiction about graceful martian men
Yeah this is going to drive broads wild lmao

>>15529644
>It can be done on the ground too
> le surface spinhab meme

>>15529696
>libidinous
Adding that to my ongoing list of space ship name ideas

>>15529698
Just live in the centrifuge for 9 months, no biggie

>>15529705
Kids might need to live in it for years for all we know

>>15529698
Here is my idea for a surface habitat with spin-pseudo gravity. First, dig a long tunnel in a circle. Then you set up train tracks on a banked incline. Then you have passenger habitat trains running on the tracks. None of this requires any particularly exotic technology.

>>15529722
>it is goals

>>15529326
>What Dying on Mars Would Do to Anon
Happiness

>>15529722
Strange, I don't remember unified masses chanting either of those things.

>>15529730
is it goals?

>>15529741
You're protected from the mass lmao. The twitter space community is divided over Starship/Elon. Many of the "#teamspace" are just down right reddit tier hate for anything Elon/SpaceX/Tesla

>>15529714
yep, gotta get on the gainz train

>>15529741
Then you live in a bubble or are a newfag. The notion of reuse was heresy and viewed as an impossible fantasy where rapid turnaround and cost savings were considered. We literally got to watch the president of Ariane have a manic breakdown during an interview with Der Spiegel over this very thing, and it got him fired.

>>15529817
>We literally got to watch the president of Ariane have a manic breakdown during an interview with Der Spiegel over this very thing, and it got him fired.
Now this I want to see.

LIFT OFF

>>15529835
>>15529835
>>15529835
>>15529835
>>15529835

>>15529836
Premature staging detected, standby to abort

>>15529838
bump limit is bump limit
this thread is disintegrating fast

I posted bits and pieces about it already, but I just finished this book, and it's okay I guess. It's divided into four mostly self-contained sections on different companies.

>Prologue
A summary of SpaceX's Falcon 1 era. It reads like a book report on Berger's book.
>Planet
Most of this section is about Planet and Astra people networking in the 2000s. Not too interesting. The events of this section reach maybe 2018-19, can't remember.
>Rocket Lab
Kind of more a biography on Peter Beck. It's nice to have the Rocket Lab lore laid out, but again nothing very groundbreaking. Covers up until the third or fourth launch.
>Astra
A pretty thorough dive into the company, and they're indeed a lolcow all the way through. This was the best part, but it's Astra so of course it was going to be enjoyable. Covers up until the powerslide.
>Firefly
The focus here was on Polyakov, and this relatively short section was mostly focused on him being crazy. Some of it was interesting. Ends with when he got forced out and the first launch.
>Epilogue
Summarizes the rest of the companies' histories up until mid-late 2022. I think the most recent event was the second Firefly launch (and a whole publishing process later, the third one is still on the pad).

Probably not worth buying, but worth taking a look though if you care about the Astra saga.

>>15529839
Newfag retard kys