/sfg/ Spaceflight General

[Anonymous No.10776767]

4th of July fireworks edition
old thread >>10767650

[Anonymous No.10776773]

HOP WHEN?

[Anonymous No.10776778]

>>10776773
Soon
https://twitter.com/LabPadre/status/1146450063314554882?s=19

[Anonymous No.10776786]

>>10776778
JUST HOP GOD DAMN IT!

[Anonymous No.10776900]

Reminder that the Orion abort test cost a quarter of a billion dollars

[Anonymous No.10776988]

>>10776900
literally five orbital launches on a proper rocket

[Anonymous No.10777002]

>>10776988
Isn't SpaceX planning to get a fifth launch on a core this year? So not just five launches, but five launches on the SAME rocket!

[Anonymous No.10777020]

>>10776900
Has there been a breakdown on why it cost that much? And I don't mean memeing about the absurd number of contractors.

[Anonymous No.10777081]

>>10777020
no
probably the Air Force charged them an outrageous price for the old peacekeeper launcher SRB that was going into the trash anyway, and then somebody else charged an outrageous price for the aeroshell and ballast (per pound!) on the booster so that it'd accelerate acceptably slow

[Anonymous No.10777126]

It's Harrison Schmitt's birthday today. Say something nice about him.

[Anonymous No.10777127]

>>10776767
Cringe

[Anonymous No.10777143]

>>10777020
Embezzlement
same as all NASA shit

[Anonymous No.10777168]

>>10777126
he looks exactly as goofy as everybody else does in that suit

[Anonymous No.10777195]

>>10777020

Two reasons.

1. It's built across the entire country and then transported down to a single location where it needs to be put together. It's a massive costflation and entirely by design.

2. Monopolies. Space contractors can basically just keep missing deadlines and NASA's got no choice but to pay, because the contractors have friends in high places (cough:senators:cough) that will force NASA to keep paying.

It's why old space is so afraid of new Space, SpaceX currently and BlueOrigin eventually. Though, BO is getting in bed with ULA already by selling their BE engines to them. So really just SpaceX. SpaceX has something the rest don't, ambition. They aren't happy with incremental progress.

ULA and related would be perfectly okay and outright welcome the idea that they'll put military service men on the moon by around a 100 per trip over the course of the next 300 years with multi-billion dollar per decade cost-plus contracts to fuel the gravy train.

That kind of entrenched "fuck your actual goals, I'm only here for the money" mentality is why it costs so much and takes SO FUCKING LONG.

[Anonymous No.10777222]

meme mission when?

[Anonymous No.10777230]

>>10776900
State of the art technology meant to allow humans to leave low earth orbit and venture into deep space naturally comes at a price.

[Anonymous No.10777234]

>>10777222
Probably earlier than orion circumcised lunar test (unmanned).

[Anonymous No.10777239]

>>10777222
I wonder if they have any other customers yet.

Are they still supposed to go out 400-500 thousand miles like was originally planned?

[Anonymous No.10777241]

>>10777230
an entire gemini mission cost a quarter billion, adjusted. Literally no excuse

[Anonymous No.10777282]

>>10777241
This. IIRC Gemini was rushed too. And if you know anything about government programs is that they get ridiculously more expensive if rushed.

[Anonymous No.10777295]

>>10776900
just found that even with all that money they didnt even bother to put in parachutes.
They could have tested it too, and recovered the orion too for testing and maybe even reuse.
They say it was intended that way...
Jesus christ.
SLS is will be the end of nasa as we now it at this rate.

[Anonymous No.10777300]

>>10777295
>maybe even reuse.
this is old space we're talking about here

[Anonymous No.10777304]

>>10777295
it wasn't an Orion, it was an orion shaped hunk of steel and weight

[Anonymous No.10777307]

>>10777295
NASA is very good welfare bureau for the military industrial complex its not going anywhere. If launch vehicles turn out to be too publicly embarrassing they'll move the big money on to some alternate project like say nuclear thermal rocket upper transfer vehicle that isabsolutely required if humans are to reach Mars in the next 50 years.

[Anonymous No.10777311]

>>10777304
Source? I mean, it makes sense to do that, just in case something goes wrong during the test, but that brings the cost into further question.

[Anonymous No.10777315]

>>10777311
they called it a boilerplate

[Anonymous No.10777319]

>>10776767
why was there no saturn centaur?

[Anonymous No.10777328]

>>10777319
careful, you'll wake up the Jupiter fanboy

[Anonymous No.10777334]

>>10777311
The only real thing was the launch escape system, the fairing was somewhat close to real but not quite IIRC, the "Orion" was just a mockup, that's why they destroyed it - there was nothing to reuse

[Anonymous No.10777336]

>>10777239
Not enough trust in the first stage. Needs more boosters.

[Anonymous No.10777382]

https://twitter.com/SpaceX/status/1146546495241371649
Cool

[Anonymous No.10777411]

>>10777382
Ok that was cool as fuck.

[Anonymous No.10777434]

>>10777382
Better quality video

[Anonymous No.10777467]

>>10777434
K I N O

I

N

O

[Anonymous No.10777472]

https://twitter.com/elonmusk/status/1146556923614941186

19513 is the new 1488

[Anonymous No.10777483]

>>10777434
Imagine surfing one of these motherfuckers back after separation.

[Anonymous No.10777486]

>>10777483
you made me post it again

and the related song https://www.youtube.com/watch?v=eTa2vXL7FI8

[Anonymous No.10777581]

>>10777483
I wonder if it would be possible to survive, assuming you had a suit to handle the brief vacuum/temperature exposure and some strap points to anchor yourself to. Would all the forces involved be within the range of possibility for a reasonably sturdy human to make the journey?

[Anonymous No.10777590]

>>10777581
You'd need a suit, but I expect it to be possible. Jump off the fairing after entry is complete so its own parafoil can deploy, and pop your own chute.

[Anonymous No.10777598]

>>10777590
>Elon Musk starts selling new extreme sports tickets to ride fairings down from orbit

Based

[Anonymous No.10777605]

>>10777598
Try Spacesurfing: An Out Of The World Experience!™

[Anonymous No.10777614]

>>10777598
That's now Star Trek Generations was going to open with, Captain Kirk skydiving from space. I think it was dropped because it would've been ridiculous to see an old man do that in a story that was supposed to be about the struggle against age and time.

[Anonymous No.10777649]

>>10777614
it would have been better if kirk did that
once a chad, always a chad

[Anonymous No.10777697]

>>10777434
Why does it look empty before it separates?

[Anonymous No.10777704]

>>10777697
look down. The payload is down, does not fill the whole fairing. You can see the payload in the fairing at time 00:00 and the 2nd stage with the engine on from time 00:03 to 00:05

[Anonymous No.10777705]

>>10777697
This was from the Falcon Heavy launch. Not a whole lot of volume taken up by the payload, as they were going for endurance, not capacity.

[Anonymous No.10777776]

Kepler will blow on the launchpad

[Anonymous No.10777790]

>>10777319
But there was one, technically. The SIV had 6 R10s basically the same engines as the centaur. They were gonna do that later but then Apollo happened.

[Anonymous No.10777814]

>>10777776
>>10777777
off by one

[Anonymous No.10777906]

>>10777434
Fairing catching

[Anonymous No.10777997]

>>10777434
there are multiple obvious cuts/crossfades in this video; I wonder what they edited out

[Anonymous No.10778010]

>>10777997
Presumably the boring parts.

[Anonymous No.10778014]

>>10777997

[Anonymous No.10778028]

I feel like it's a really exciting time for space flight and it will only get better over the next several years.

[Anonymous No.10778074]

>>10778028
manned spaceflight, in particular

[Anonymous No.10778167]

>>10777336
SpaceX is in talks with several companies for Starship launches.

[Anonymous No.10778308]

>>10777906
80's cheap special effects tier real.

[Anonymous No.10778534]

FUCKING HOP

FUCKING WHEN

?!?!?!?!

[Anonymous No.10778540]

>>10778534
I swear you're just doing this because you've noticed a series of delays that roughly corresponds to repeats of this shitpost.

[Anonymous No.10778570]

>>10778540
HOP
WHEN
?!?!!!!!?!!!!!!!11!!!1!!!?

[Anonymous No.10778925]

Oh, say can you see by the dawn's early light

[Anonymous No.10778927]

>>10778925
What so proudly we hailed at the twilight's last gleaming?

[Anonymous No.10778928]

>>10778927
Whose broad stripes and bright stars through the perilous fight,

[Anonymous No.10778930]

>>10778927
>>10778925
kek'd

shouldn't it be named "Untitled Space Craft"?

[Anonymous No.10778931]

>>10778928
O'er the ramparts we watched were so gallantly streaming?

[Anonymous No.10778934]

>>10778931
And the rocket's red glare, the bombs bursting in air,
Gave proof through the night that our flag was still there.

[Anonymous No.10778935]

>>10778931
please tell me the test payload is ten actual blue whales

[Anonymous No.10778937]

>>10778934
Oh, say does that star-spangled banner yet wave

[Anonymous No.10778938]

>>10778937
O'er the land of the FREEEEEE and the home of the BRAAAAAAAVE!

Thank you all, hoped you like it, and have a happy Independence day!

[Anonymous No.10778947]

>>10778930
I think I've already made that joke before. Also, it's meant to be the successor to this.

[Anonymous No.10778955]

>>10778938
it needs a third stage that runs on the TIMBERWIND nuclear engine

[Anonymous No.10778956]

>>10778937
Kind of want.

[Anonymous No.10779041]

>>10778956
The rest of the world would collectively shit it's pants if the US yeets the Statue of Liberty into orbit.

[Anonymous No.10779126]

>>10779041
>stardate 10.978.8
>scientist on secret outpost that observes earth for evaluation to let them join the galactic federation
>previous guy was fired because he claimed the dominant bipedal creatures of the planet shot a primitive transportation vehicle on top of a makeshift bomb in to a orbit around the solar system.
>you see the fucking statue of liberty orbiting the planet
>oh shit.

[Anonymous No.10779236]

>>10778938
https://www.youtube.com/watch?v=q-7fjGKxcD0

[Anonymous No.10779360]

>>10777319
the J-2 engine used for the S-IVB was much larger and more powerful than the RL-10, but less efficient

[Anonymous No.10779574]

>>10779126
>Galactic Federation's FW your report finally get's to them

[Anonymous No.10779758]

Per L2. SN6 Raptor is at McGregor and aiming to ship to Boca Chica NET next week, pending good test series.

[Anonymous No.10779760]

https://www.youtube.com/watch?v=LAUj-TQpn-A

[Anonymous No.10779782]

>>10776767
Doesn't the vacuum of space next to our pressurised atmosphere violate the laws of thermodynamics?

[Anonymous No.10779784]

>>10779782
air be heavy yo

[Anonymous No.10779786]

>>10779782
>what is gravity pulling the gas molecules towards the surface

[Anonymous No.10779807]

>>10779784
>>10779786
So gravity is all you need to create air pressure?

[Anonymous No.10779809]

>>10779807
the thing keeping the gas molecules trapped in the atmosphere is that eventually the mean free path of the molecules becomes long enough that gravity starts to have a significant effect on their collisions (which make air pressure)

[Anonymous No.10779814]

>>10779758
it better work

[Anonymous No.10779828]

>>10779809
Collisions with what?

[Anonymous No.10779841]

>>10778925
>uses heritage flight-proven hardware to reduce costs
Just shut up and take their money!

[Anonymous No.10779864]

>>10779828
other air molecules?

[Anonymous No.10779872]

>>10778927
ouch oof the harmonics
that thing is going to rattle itself into the fucking shadow realm

[Anonymous No.10779873]

>>10779864
Is a container required?

[Anonymous No.10779877]

>>10779873
no, why the fuck would a container be required when gravity bends their paths back down until they recontact the atmosphere if they bounce out

[Anonymous No.10779897]

>>10776767
Get a life.

[Anonymous No.10779908]

>>10779877
What is involved in creating air pressure in the ISS?

[Anonymous No.10779910]

>>10779841
Someone sell this idea to Shelby.

>>10779872
>rattles itself so hard it teleports to the moon
>"Nothing personnel, commy."

[Anonymous No.10779914]

>>10779908
high amount of gas in a small volume

[Anonymous No.10779922]

>>10779914
Without gravity?

[Anonymous No.10779924]

>>10779922
correct

[Anonymous No.10779925]

>>10779922
The ISS keeps it's air by using the walls of the modules that make up the station.

[Anonymous No.10779931]

>>10779908
a tin can (container)
this is required for the ISS because it's not a literal planet that has enough mass/gravity to hold onto an atmosphere without a container

[Anonymous No.10779954]

>>10779922
If we were inside a container, how would you explain the different air pressure at different altitudes?

[Anonymous No.10779967]

>>10779924
>>10779925
>>10779931
So air pressure on the ISS is created by the air pressing upon the walls in every direction without requiring gravity.

Therefore the earth's gravity is acting like a wall that the atmosphere is pressing upon in every direction?

[Anonymous No.10779970]

>>10779967
>the earth's gravity is acting like a wall
you could think of it as a wall that is pushing towards the surface, yes
>the atmosphere is pressing upon in every direction
correct, that is how fluids work (air is a fluid)

[Anonymous No.10779971]

>>10779954
On the ground, the weight of the entire atmosphere above it creates the felt pressure. At some altitude (but still relatively close to the ground) there's still air above pushing down due to their weight, but there is less atmosphere above (compared to ground level) because part of the atmosphere is below. As the altitude increases, the amount of atmosphere above decreases and thus the felt pressure decreases.

This is the same reason why the pressure of water in an ocean increases as the depth increases. By going deeper, the amount of water above increases and thus it's weight pushing down on the water below.

Some further reading: https://www.grc.nasa.gov/www/k-12/WindTunnel/Activities/fluid_pressure.html

P.S: The weight comes from gravity.

[Anonymous No.10779978]

>>10779954
Temperature gradient.

[Anonymous No.10779979]

>>10779971
this explains what it feels like at the bottom but it doesn't explain the behavior in the thermosphere and exosphere

[Anonymous No.10779983]

As an American, Murika posting is so fucking cringe. This country is a dump and the government is busy nuking the "freedoms" we have left.

[Anonymous No.10779984]

>>10779979
At those altitudes, each individual air molecule has so much energy (due to their temperature, which that is due to the fact that there's little atmosphere above them to shield them from the rays of the Sun) that makes them move around at such great velocity that their weight isn't the only force that's significant. The result is the strange behavior of the themosphere and exosphere (strange compared to close to the ground).

[Anonymous No.10779990]

>>10779967
not 100% accurate but does the job

[Anonymous No.10779998]

>>10779970
>you could think of it as a wall that is pushing towards the surface, yes
But gravity cannot be a wall as it is not a solid that a gas can directly press upon which is required for pressure to exist.

[Anonymous No.10780000]

>>10779998
alright smoothbrain, thanks for taking what your high school physics teacher said literally

[Anonymous No.10780004]

>>10779990
who said that force walls need to be solid?
You need to start thinking with vectors. The gravity vector and air pressure vector are opposed and equal at the limit of the atmosphere

[Anonymous No.10780007]

>>10779990
What is making the air pressure the opposite direction to gravity?

[Anonymous No.10780009]

>>10780004
oops, meant to reply >>10779998
>>10780007
that is how gas pressure works. For more information go to Wikipedia, the Free Encyclopedia

[Anonymous No.10780015]

>>10780000
So you believe gravity can act like a solid container?

[Anonymous No.10780026]

>>10780009
What makes a helium balloon expand and explode in each direction equally in a vacuum chamber on earth?

[Anonymous No.10780283]

>>10780026
the gas tends to expand in order to reduce pressure. In the case of a vacuum chamber, we have 3 forces. The first is the vacuum on the outise sucking the baloon, thus trying to expand it. The second is the ballon rubber tension force, keeping the rubber wall together. The third is the gas pressure trying to expand in all directions.
I hope this answer helps

[Anonymous No.10780316]

>>10780283
there is no force being applied by the vacuum, there are only two forces, the balloon pulling in and the air pushing out

[Anonymous No.10780365]

i guess more news about the new space development agency broke. i saw a bit of the report a few weeks ago but it didnt go into much detail until now. looks like they want the space force to dominate cislunar space too? their plans might be overeager, but who knows? the space game is rapidly changing... i wonder if they have any ideas about mars yet...

[Anonymous No.10780395]

>>10780365
i should say space command instead of space force (or whatever it will be called) since space command is the one that does the actual fighting in space

[Anonymous No.10780431]

>>10780365
>>10780395
Space force is literally just a reorganisation of existing assets so Trump can wave his dick around. It is not a meaningful organisation of any kind.

[Anonymous No.10780540]

>>10779760
Rocketlab turning their kickstage into a fully fledged satellite bus. Seems like a pretty cool idea.

[Anonymous No.10780750]

>>10780431
yes but the sda was also created to develop new capabilities for the space force. they just revealed some things they are wanting, things like space situational awareness for beyond earth orbit and payload capabilities to anywhere in the earth-moon system. all of these things look like new things they are requesting for the space force. we're talking new spacecraft and thousands of satellites.

[Anonymous No.10780817]

>>10780750
"we want to be able to see shit and go places please" - Space Force
"wow how rude what a crazy demand 0/10 impossible 1 billion dollars please" - MIC

[Anonymous No.10780834]

>>10779758
>Inb4 SN6 RUD
>inb4 waiting for SN7 and SN8 to hop

[Anonymous No.10780842]

>one raptor a week guys
>after we spend 6 months setting up the new machines

[Anonymous No.10780882]

Soyuz Meteor-M-2 launch in 45 minutes

https://www.youtube.com/watch?v=DUMkfobgOws

[Anonymous No.10780981]

>>10780882
and off it goes

[Anonymous No.10781114]

why the fuck does SpaceX own property that's underwater

[Anonymous No.10781123]

>>10781114
Musk wants to build Rapture on a budget.

[Anonymous No.10781130]

>>10781114
That's a beach my dude, the tide comes in and out.

[Anonymous No.10781164]

>>10781130
that doesn't change the fact that all of those streets and property are underwater, and some of them were recently bought by SpaceX

[Anonymous No.10781170]

>>10781164
tl;dr property law in Texas and development rights in beach eroded property are weird.

[Anonymous No.10781224]

>>10781114
ocean launch platform?

[Anonymous No.10781310]

>>10777997
dont waste your breath. you'll never be able to convince the musk fanboys that space x is a scam no matter how obvious the evidence is. same thing with the moon landing.

[Anonymous No.10781320]

>>10778925
christ what a stupid idea.

im glad nixon axed the apollo program. then stupid shit like this wouldnt be built and nasa wouldnt waste its time with dead ends like these.

[Anonymous No.10781332]

>>10781320
Anything would have been better than Shutte.

[Anonymous No.10781383]

>>10781310
bait?

[Anonymous No.10781384]

>>10781114
how the fuck else are you supposed to hide your democrat-funded child slave sex camp from the prying eyes of InfoWars?

[Anonymous No.10781533]

>>10781114

[Anonymous No.10781537]

>>10781384
Sounds like something easily hid somewhere mundane, like a pizza shop basement or something similar

[Anonymous No.10781963]

Can someone give me a list about all the rocket/spacecraft companies?

[Anonymous No.10781980]

>>10781963
ULA: should-be-illegal price fixing scheme that came about when Boeing was caught spying on Lockmart and they both decided to rob the government

SpaceX: weird Californian cult

NGIS: hoping that if they change their name enough times you won't remember that this is Thiokol, who killed a shuttle crew right in front of you on live TV when you were a kid

ArianeSpace: hon hon hon baguette du fromage

RocketLab: definitely probably not sheepfuckers

[Anonymous No.10781993]

>>10781980
>Lockmart
Sounds like a store for locks and locks accessories.

[Anonymous No.10782000]

>>10781980
You forgot:

Blue Origin: the other weird cult

[Anonymous No.10782004]

>>10781993
Not so far from truth, they like to sell locks of various kinds to their customers

[Anonymous No.10782046]

stacking

[Anonymous No.10782064]

>>10781963
>ULA: True American patriots and the American way to space! Excellent work conditions and pay a wonderful place to make career and live a fulfilling life participating in one of the most important American companies. ULA makes sure America retains its lead in spaceflight by currently building one of the most capable commercial launch vehicles in history - Vulcan. Despite legal wars with spacex, seeking to sabotage the Vulcan rocket, ULA has won an important contract that has secured its future and the American interests.
>spacex: Pyramid scheme by a famous conman with confirmed russian ties. Based in California and surviving mostly on government subsidies. Unlike normal companies focused on benefiting shareholders, spacex is almost entirely owned by one man who is well known for his highly outrageous claims meant to attract gullible investors. The ever changing whims of the owner are creating one chaotic unstable company that often fails to deliver schedules despite excessive funding and sometimes results in tragic loss of rockets and important cargo such as one crucial to the security of the United States satellite manufactured by Northrop Grumman.
>Northrop Grumman: Traditional American aerospace defense contractor responsible for many spectacular things seen on television and deeply participating in keeping America safe and secure by manufacturing wide range of critical technologies such as advanced satellites and space telescopes. Rocket boosters manufactured by Northrop Grumman powered the legendary Space Shuttle. Northrop Grumman is also currently building the most capable space telescope, JWST, that will replace the Hubble and offer new insights into the nature of the universe.
>ArianeSpace: Our European friends and partners. In a mutually beneficial cooperation NASA intends use ArianeSpace's services to launch the most-capable space-based telescope, JWST, currently being built by Northrop Grumman.
>RocketLab: Small but promising company.

[Anonymous No.10782066]

>>10782046
are they trying to play tetris?

[Anonymous No.10782071]

>>10782064

[Anonymous No.10782140]

>>10782066
If so, they are doing poorly.

>>10782000
ARCA: the laughing stock

[Anonymous No.10782177]

>>10781114
Climate change

[Anonymous No.10782358]

another section moved into staging(?)

[Anonymous No.10782397]

>>10782358
how long is one section?

[Anonymous No.10782483]

>>10782358
one panel is like 1.5m?

[Anonymous No.10782511]

getting really shiny now

[Anonymous No.10782575]

[Anonymous No.10782619]

Everyday soitronaut starring in a movie

[Anonymous No.10782642]

>>10782483
That looks and sounds about right, actually.

[Anonymous No.10782810]

>>10782575
>>10782358
STACC

T

A

C

C

[Anonymous No.10783185]

Just looked at that fcc filing from blue origin? slightly higher orbits and only 3 thousand satelites from bezos. I am curious what is the time frame considering their speed of manufacture and Space X already launching a prototype cluster.

Is this planned for new glenn an untested rocket system, with untested retrograde landing possibility?

[Anonymous No.10783192]

>>10783185
yes, the Amazon sats are launching on New Glenn I believe

[Anonymous No.10783262]

>>10783192
2021 for new glenn right meaning space X has a year to ramp it up. And new Glenn has a year to be delayed, as it's a pretty serious rocket with proper retro landings.

It's only three thousand at a higher alt. But I think SpaceX has room to come out on top

[Anonymous No.10783315]

>>10783262
you are delusional if you think the BFR or the new glen will fly in the next 5 years.
Hops, sure, the rest is far off.

[Anonymous No.10783340]

>>10783315
I mean we both know that's a lie. But it's way closer than 5 years. But point being is that all SpaceX needs is afuck ton of F9 launches at a time when they might be finding themselves with too few customers.

While for Bezos's scheme to be economical he needs new glenn to work by 2021-2022? He can partner it with amazon prime in some way but he is looking at a much bigger and longer timeline with more that has to work out

[Anonymous No.10783357]

>>10782064
kek

[Anonymous No.10783358]

>>10783185
Probably ~3-5 years after Starlink has demonstrated the viability.

[Anonymous No.10783433]

>>10783340
Starlink is already fully funded even launching on F9, so long as they can prove the interlinks work then it's more or less a done deal and SpaceX will have an absolutely obscene amount of money to throw at BFR.

[Anonymous No.10783444]

>>10783433
plus government bucks https://spacenews.com/space-development-agency-releases-its-first-solicitation/

[Anonymous No.10783558]

Hello /sfg/, I'm designing my own liquid propellant engine, and I need some suggestions on the minimum number of sensing equipment needed for a engine test stand. I don't have tons of money to do this with, so I can't afford lots of $200+ transmitters. This engine will not be a flight article, it'll only be a proof-of-concept, so I don't need high fidelity data nor exact performance data. What I need is a way to diagnose the engine if it's not operating properly.

Thank you all in advance.

[Anonymous No.10783569]

>>10783558
thrust
exit velocity
temperature distribution
vibrations
combustion efficiency
stability

[Anonymous No.10783571]

>>10783558
shit dude that's actual rocket engineering, why the fuck did you think we'd understand that

[Anonymous No.10783577]

>>10783571
Kek

[Anonymous No.10783580]

>>10783571
Yeah, we only do ARMCHAIR rocket engineering around here

[Anonymous No.10783597]

which chinese private space companies are worth paying attention to?

[Anonymous No.10783600]

>>10776767
The lack of RAILGUN use has severely CLAMPED space travel.

[Anonymous No.10783605]

>>10783569
>thrust
I don't think I can measure that without putting the engine and propellant tank on a sled.

>exit velocity
That would have to be measured indirectly.

>temperature distribution
Thermoplastic are relatively inexpensive, but they may be difficult to use since the engine isn't cooled in any way. I could use a thermo-camera, but apparently one gets the attention of the government really quick if one buys that along with rocket equipment.

>vibrations
Accelerators can be unreliable.

>combustion efficiency
That would require measuring temperature, which I've already discussed

>stability
How?

>>10783571
One time I came here asking for engineering help on pressure vessels and someone posted 3 AIAA papers. Someone has paid money to share technical reports to someone else on a Mongolian watercolor painting forum.

Thank you, anonymous AIAA member.

[Anonymous No.10783612]

>>10783605
I'm at a uni, if you want any published stuff I have access to all of the databases and libraries and stuff

[Anonymous No.10783616]

>>10783605
measuring temperature at various points and the force applied by the engine is probably the easiest thing

[Anonymous No.10783630]

>>10783612
Thank you, but I think I have enough technical reports. If I'm desperate enough, then I can ask the rocket design team in my university for help, but I don't want to distract them from their much more ambitious rocket project over my engine that's made out of iron pipes.

>>10783616
For measuring the thrust, how would one get around the potential issue of the plumbing supporting part of the thrust and thus making the measurements misleading? Or am I overthinking that issue?

[Anonymous No.10783635]

>>10783630
yeah, go ask the design team, they're your best bet
flexible tubing???

[Anonymous No.10783639]

i want to know how spacex plans to deal with radiation affecting the electronics and computers aboard mars-bound starships

[Anonymous No.10783645]

>>10783630
attach the rocket to a rope and hook a weight meter to it like the kind you'd use to measure a fish.

[Anonymous No.10783651]

>>10783639
Multiple x86 Linux systems running parallel instances, with a voting system.

[Anonymous No.10783654]

>>10783639
Shielding and lots of fault-tolerance like how they're doing it now probably. IIRC their flight control computers consist of a pair of computers cross-checking each other, with each pair being cross-checked against 2 other pairs.

[Anonymous No.10783659]

>>10783635
>yeah, go ask the design team, they're your best bet
I probably will later once classes resume after this summer.

>flexible tubing???
You mean like plastic or rubber? Wouldn't that have issues with heat from the engine? Then again, if I put a small section of the tubing as far away from the engine as possible, then that issue may be avoided. Thank you.

[Anonymous No.10783665]

>>10783659
it's basically just an engine gimbal
anyway you can characterize the force exerted by your flexible tubing at various deflections and temperatures

[Anonymous No.10783699]

>>10783665
I'll look into that. Thank you!

Hopefully this thing works. My goal is to have a test fire done by the end of this year, or early next year depending on how much time my university takes from me.

[Anonymous No.10783929]

>here's your launchpad bro

[Anonymous No.10783940]

>>10783929
Is that the starhopper pad?

[Anonymous No.10783948]

>>10783940
and/or orbital prototype landing pad and/or hopper landing pad. I assume they want to try translationary movement with the hops

[Anonymous No.10783962]

>>10783929
>Ay ese dis concrete dry

[Anonymous No.10783983]

was the stamp issue actually that big of a deal? Should they have been allowed in space again?

[Anonymous No.10784270]

>>10783929
Proof any brainlet can build space hardware.

[Anonymous No.10784324]

>>10783962
si

[Anonymous No.10784528]

>>10783929
>Space technology requires billions of dollars and hyper specialised clean roo-
>Heh, nothing personnel, gringo

[Anonymous No.10784543]

>>10784270
But not everyone can design it

[Anonymous No.10784570]

>>10783929
what happened to their heads?
what they are trying to hide at spacex?

[Anonymous No.10784698]

>>10784570
Rights to image maybe? Probably didn't want to ask for permission to publish the image, so just blur people's faces so they can't be identified

[Anonymous No.10785118]

mars 2020 name when

[Anonymous No.10785326]

>>10783929
Elon, i dont feel so good..

[Anonymous No.10785383]

I want to be an AA station on top of my house to take down any shitty drones that go over my sovereign air space

[Anonymous No.10785391]

>>10785383

build*

[Anonymous No.10785458]

>>10784570
the guys at NSF are big weenies about publishing people's faces and force everybody they associate with to hide faces as well, because they're assholes

[Anonymous No.10785712]

Which rocket fin shape is the most kino, /sfg/?

[Anonymous No.10785716]

>>10785712
I like Sergei Belotserkovskiy's design

[Anonymous No.10785843]

>>10785716
>>10785712

[Anonymous No.10785862]

HOP WHEN????

[Anonymous No.10785870]

>>10785862
14th NET

[Anonymous No.10786385]

So I have a general parts list for my rocket engine, is it okay for me to pass it by you guys? It's just for the chamber and throat (no nozzle yet, but the chamber pressures are so low that there's little gain from a nozzle for now). I don't have the tankage and plumbing sorted out yet, but I do know that it'll lead to a 1/8" NPT.

[Anonymous No.10786644]

>>10786385
BOMs are boring AF

[Anonymous No.10786646]

>>10786644
>BOMs
I'm not familiar with that term. What is that?

[Anonymous No.10786653]

>>10786646
oof

>Bill of materials

[Anonymous No.10786656]

>>10786653
They can be, but I want to make sure that I'm not forgetting anything critical since I don't have alot of money. And besides, it's only 4 parts, it's not like the SLS contractor list.

[Anonymous No.10786669]

>>10786656
fine share it. Have you done any FEA? "It's low enough" are common famous last words
(finite element analysis)

[Anonymous No.10786680]

Anyone still have the link to that centrifuge calculator thingie that was posted a month or so back in these threads?

[Anonymous No.10786683]

>>10786669
>fine share it.
2 of these: https://www.mcmaster.com/44605k545
1 of this: https://www.mcmaster.com/44615k152
1 of this: https://www.mcmaster.com/4513k504
Tell me if the links aren't working. McMaster can be a bit weird with it's links.

>Have you done any FEA?
Nope. Don't have anything can can do that right now. The engine is only going to fire for less than 5 seconds, so I'm hoping that the engine can hold it'self together long enough.

[Anonymous No.10786686]

>>10786680
http://www.artificial-gravity.com/sw/SpinCalc/SpinCalc.htm

[Anonymous No.10786866]

HOP HOP HOP HOP HOP HOP HOP HOP HOP

[Anonymous No.10786869]

>>10786866
>HOP HOP HOP HOP HOP HOP HOP HOP HOP

[Anonymous No.10786888]

Is The Boring Company going to work on anything Mars related or will it be stuck on Earth?

[Anonymous No.10786937]

Elon visited Boca today

[Anonymous No.10786954]

>>10786888
A TBM is absolutely going to be one of the very first things to be shipped to Mars, tunneling is by a fucking mile the best way to create pressurised, radiation shielded habitats using in situ resources.

[Anonymous No.10787101]

StarHopper

[Anonymous No.10787104]

>>10787101
Tonight they are still removing the protective film off the panels.
A pic showing the tall structure progress.

[Anonymous No.10787106]

>>10787104
They STILL havent fixed the damn nose.

[Anonymous No.10787107]

>>10787104
Cocoa site photo found by reddit user RootDeliver on youtube chat room, not sure who took it or when, but it has a nice view of the backyard.

[Anonymous No.10787108]

>>10787107
https://twitter.com/elonmusk/with_replies

>Exciting progress in Boca! Hopper almost ready to hover. Based on tonight’s test, looks like 600 Hz Raptor vibration problem is fixed.

[Anonymous No.10787115]

HOP WHEN?

[Anonymous No.10787117]

>>10787115
july 17

[Anonymous No.10787118]

>>10787117
why is it always 10 days in the future..

[Anonymous No.10787120]

Any news about Raptor SN7?

[Anonymous No.10787121]

>>10787108
Whats with that sudden expansion ring around the outside of the main exhaust flow?

[Anonymous No.10787131]

Does anyone have the photo of some black women protesting the space race, holding a sign saying something about welfare?

[Anonymous No.10787141]

>>10787131
https://pics.me.me/billion-for-space-pennies-for-the-hungry-with-tigrs-billiona-17620462.png

[Anonymous No.10787142]

>>10787141
Thanks mayne

[Anonymous No.10787143]

>>10787141
kek

[Anonymous No.10787145]

>>10787131

ooga booga bix nood muthfucka

Just imagine where we would be if the hundreds of billions blacks cost the nation every single year were to be ploughed into space exploration/travel - and this having been the case since the days of Apollo. We'd likely be in other star systems now.

As it is, we're still stuck on this planet with a population in Africa that shows no signs of peaking anytime soon. By the end of the century over half the planet's population will be African, a quart will be Indian/Chinese and the majority of the rest will be Hispanic. The few reamining whites will perhaps then wonder if it was all worth it, to enable Shaneequa to have her fifth kid.

What a fucking waste of a civilisation. Blacks are the Great Filter, every society must eventually collapse in on itself because of "muh feels" towards people who couldn't run a bath.

[Anonymous No.10787151]

>>10787145
seems like east Asians could be humanity best hope in the long term, high average intelligence but without pathological altruism dragging them down

[Anonymous No.10787155]

>>10787118
Still better than always being 10 months into the future like SLS, right?

[Anonymous No.10787230]

>>10787107
What will happen to the completed prototype at Cocoa? Doesn't look like the site is suitable for any test flights.

[Anonymous No.10787249]

https://twitter.com/mayemusk/status/1147781786270760960

>How did you spend your Saturday night? @SpaceX #starship #Brownsville

Elons mom on twatter.

[Anonymous No.10787345]

>>10787249
>mom
that's a man

[Anonymous No.10787356]

>>10787345
It is Maye Musk, mother of Elon Musk, please contain your gender ideology for a while

[Anonymous No.10787377]

>>10787106
Kek, its gonna fuse together at re-entry burn

[Anonymous No.10787507]

Look like someone having full european experience.

[Anonymous No.10787590]

Mars is going to be a sausage fest.

[Anonymous No.10787740]

>>10787590
Yeah but think of how fast all shit will get done. Unless they build sexbots or something

[Anonymous No.10787754]

>>10787740
They'll build just one. Guy with best productivity gets firs dibs.

[Anonymous No.10787768]

No racism is spaceflight. Racist bitches leave.

[Anonymous No.10787772]

>>10787768

*in

[Anonymous No.10787864]

>>10787120
can you read

[Anonymous No.10787929]

From L2:

Expanded long term "WORK TO" dates for SpaceX. Remember, different to the range schedule as they are dates to aim to be ready. Then they'll find slots on the Range.

Amos17 - 8/3
SL v1.0 Launch 1 - 9/30
IFA - 10/15
SL launch 2 - 10/22
GPS III-3 - 11/25
SL launch 3 - 11/27
CRS-19 - 12/17
NASA Crew Demo 2 - 12/17

Jan-June 14(!) flights. Seven are Starlink.

[Anonymous No.10787935]

>>10787507
"european"

[Anonymous No.10787936]

>>10787590
we will need those artificial wombs by then or the colony will collapse

[Anonymous No.10787941]

https://twitter.com/RogerLewisHolt/status/1147787064836055041

Boca China Starship as built right now and missing pieces

[Anonymous No.10788057]

>>10787507
Too bad no one warned him that Spain is third world country outside few selected cities.

[Anonymous No.10788113]

>>10787941
So when and how will they add the fins?
Although I guess it's a stupid question since they said they had redesigned them...

[Anonymous No.10788172]

>>10787230
they'll move it by barge to launch complex 39A

[Anonymous No.10788237]

>>10787108
let's take another look at this
it's got an F1 style flame front, doesn't it? is this due to how fuel-rich it is and atmospheric mixing, or is it a fuel-rich outside boundary layer?

[Anonymous No.10788299]

>>10788237
The flame front is caused by the use of small amounts of film cooling to reduce wear and tear on certain ‘hotspots’ in the combustion chamber/nozzle; this allows the Raptor to maintain high performance whilst also being reusable, at the cost of some efficiency due to dumping fuel. The F-1 also used film cooling, but on a much greater scale.

[Anonymous No.10788302]

>>10787929
that's a lot of starlink trains

[Anonymous No.10788438]

Alright, which of you guys did this?
https://twitter.com/starlink_spacex/status/1147259180434300930

[Anonymous No.10788875]

hoppity hippity news from there big cheese himself

[Anonymous No.10788891]

>>10788875
H O P P

O

P

P

[Anonymous No.10788912]

>>10788875
LJ chips?

[Anonymous No.10788920]

>>10787929
Is demo 2 in december now? Wasnt it supposed to be summer/early fall, or am i confusing it with something else?

[Anonymous No.10788940]

>>10788875
FREE

CHIPS

[Anonymous No.10788941]

>>10788920
anon....

[Anonymous No.10788945]

>>10788920
the capsule wasn't good for reuse and blew up when they tested it, so the whole program got pushed back while they tried to convince NASA that they understood what happened

[Anonymous No.10789192]

>>10788438
Baleted

[Anonymous No.10789207]

>>10777997

to hide flat earth

[Anonymous No.10789492]

does anybody have the updated experimental vehicle flight permission thing for Hopper at Boca Chica?

[Anonymous No.10789534]

>>10787941
Maybe its superheavy

[Anonymous No.10789553]

>>10789192
Duplicate tweet I guess. Tweet implied that the projector was a starlink receiver.


>The New #Starlink Modem Device from #SpaceX and The Starlink Satellite Constellation Development Project are set for Pre-Order. Actual release date is due by 4th Quarter of 2019. Global satellite Service is due by January 2020. #ElonMusk
2:39 PM - 5 Jul 2019
https://twitter.com/starlink_spacex/status/1147258819925479424

[Anonymous No.10789597]

>>10789553
are you stupid or trolling or am I missing a joke or

[Anonymous No.10789599]

>>10789553
I'll be seriously impressed if I can give my ISP the finger in just over a year. I'll probably pre order anyway since it can't be too expensive and I'm the victim of shitty ISP rural monopoly with garbage 4g service and tiny data caps.

[Anonymous No.10789604]

>>10789553
are you an idiot? it's a troll or scam account

[Anonymous No.10789720]

Assuming I've got a couple million dollars to spend, what's the current ETA on buying a flight to the moon? How about to Mars?

[Anonymous No.10789723]

>>10789720
Moon shot is probably about three to five years away, optimistically. Mars is going to be longer, and when it happens, it'll be Plymouth Rock on hard mode - the Pilgrims were playing on Very Easy.

[Anonymous No.10789745]

/k/ wants to know the downmass of starship, that is, the mass starship can land with (and can therefore be used for armor, weapons, and troops)

[Anonymous No.10789749]

>>10789745
SpaceX' aspiration is 150 tons, with an acceptable minimum of 100 tons. They might go as high as 300 tons.

[Anonymous No.10789753]

why are we excited about starhopper hop? it's literally just three raptors on a grain silo, it's barely even resembles starship and spacex already knows "take off, hover, land"

[Anonymous No.10789760]

>>10789749
I thought those were the upmass numbers? I mean the amount of payload it can land with in an Earth to Earth flight (with or without Superheavy)

[Anonymous No.10789761]

>>10789745
it's unknown, but likely to be very large
60 tons? it's limited by a few factors
1. it needs to have enough thrust to do a hoverslam landing
2. aerodynamic stability considerations during reentry
3. thermal considerations during reentry

[Anonymous No.10789762]

>>10789753
it means that raptors are real enough to fly, the very soul of the Starship Superheavy program
without them nothing can happen but grain silos

[Anonymous No.10789771]

>>10789760
>>10789761
I want to put out that while #1 is a known factor, (three sea level raptors have a known level of thrust that I'm not going to look up right now), #2 and #3 are probably not known even to the men who're designing it
it's going to take a bunch of simulation and real life testing to find that

[Anonymous No.10789785]

>>10789723
>implying
With all the modern tech in the world at their disposal, plus 1/3g, colonizing mars will be piss easy

explain why you think it's going to be hard to do

[Anonymous No.10789795]

>>10789760
>I thought those were the upmass numbers? I mean the amount of payload it can land with in an Earth to Earth flight (with or without Superheavy)

They're essentially synonymous. There's very little difference between launching something to orbit or the other side of the planet.

[Anonymous No.10789822]

>>10789795
thermal considerations on reentry limit how much weight you can bring down, and the maximum weight at launch is very different from the maximum allowable for a successful landing

[Anonymous No.10789833]

>>10789785
It's nowhere near as easy as just planting seeds in the ground. However yes, modern tech will make things easier. The real challenge is going to be how well certain things such as water, air and volatiles can be recycled and the maintenance on that equipment. The other thing will be creating sufficient pressurised volume to grow crops. Domes are not an option, too much radiation, the engineering is very difficult and also too much imported mass. Cut and cover is maybe an option depending on how easy it is to ISRU concrete, that will probably depend heavily on if sulfur is easily available for extraction near the landing site. I'm pretty sure tunnels are going to be the way to go and is why the boring company is developing fast tunneling machinery and utilising tailings for construction. If you have enough power, and there must be a lot just for the Methane production then you can basically run your machine for as long as you want until mechanical failure. Heck if you drill into the right rock it's very possible you won't even need any tunnel segments to line it, just spray on a rubber gas liner onto the walls.

I'm of the opinion it's absolutely possible and most of the stuff needed is already available on the commercial market, maybe simplified and using common components though, it's just a case of cheap transport for large payloads which with any luck is right around the corner.

[Anonymous No.10789836]

>>10776767
Earth is flat

[Anonymous No.10789962]

What a shit timeline where Elon keeps responding to everyday soistronaut and not autistic /ourguy/ Scott Manley.

[Anonymous No.10789971]

>>10789962
Scott is too busy getting robbed by elaborate schemes in Spain

[Anonymous No.10789991]

>>10789962
>soistronaut
>not estronaut
shamefur dispray

[Anonymous No.10790006]

>>10789971
>Elaborate schemes

That's a cute euphemism for African rapists

[Anonymous No.10790022]

>>10789991
>Estronaut

Kek ok thats good

[Anonymous No.10790038]

>>10789723
>it'll be Plymouth Rock on hard mode
More like Plymouth Rock meets Oregon Trail

[Anonymous No.10790044]

>>10789971
i...i need some context here

[Anonymous No.10790056]

>>10790044
>i...i need some context here
In his latest update, he explains that he got robbed on the highway in Spain after someone punctured his tires at a rest stop and waited until he had to pull over, offering to "help," and then running off with a bag that happened to contain his laptop and camera.

[Anonymous No.10790063]

>>10790056
Diversity is truly our greatest strength

[Anonymous No.10790095]

>>10790063
Spaniards are the Mexicans of Europe, there's decent chance that whoever took his bag could be considered a nationalist by their standards

[Anonymous No.10790158]

How far will spaceflight develop over the next 50 years?
What will actually do after we have been to Mars and perhaps even setup a small permanent colony up there?

[Anonymous No.10790180]

>>10790158
More expansion
moons, asteroids, the rest of the martian surface because it is fuckhuge and can support hundreds of thousands of individual colonies

because of the complete lack of oceans, mars has nearly 3 times more usable surface area than earth

[Anonymous No.10790296]

>>10790158
Hopping for the Expanse timeline

[Anonymous No.10790319]

>>10790158
Ceres/Titan are next on the list for a "must go" places and has potential for somewhat human habitation.

[Anonymous No.10790622]

>>10790158
As far as we want, within the solar system. Space is literally just a matter of being willing to build things like nuclear engines.

Consider that if you asked that same question 50 years ago, I'd have answered "moonbase".

[Anonymous No.10790631]

>>10790622
>Consider that if you asked that same question 50 years ago, I'd have answered "moonbase".
Imagine how pissed those people who felt that way would be now after 50 years of barely reaching LEO and nothing else.

[Anonymous No.10790642]

>>10790631
Shuttle didn't just keep us stuck in LEO, it also let Skylab fall because it took so long to get started. Imagine if we had a few more years of Skylab instead of having to schlep up a bunch of tin cans one at a time over many years.

[Anonymous No.10790656]

>>10790158
Moon base, Mars colony, experimental orbital colonies around Martian Moons as a practice for asteroid colonization, first manned mission to Ceres.

[Anonymous No.10790731]

>>10790642
Hopefully things will pick up again soon. However if NASA's moon plans get canned then it'll be dead to me.

[Anonymous No.10790747]

>>10790642

I'd rather a proper American Mir scale station program in that timeframe than Skylab or the Shuttle, with a new crew transport spacecraft and next generation rocket and rocket engine investment.

[Anonymous No.10790749]

>>10790731

NASA's moon plans are junk. Spend a moonbase's worth of money to put a few people on the moon well after you can buy some tickets there through Elon.

[Anonymous No.10790752]

>>10788057
fuck you

[Anonymous No.10790763]

>>10790749
At least its something that's somewhat ambitious and exciting, and not taking 30 years to relearn everything about microgravity that Mir has already did.

[Anonymous No.10790765]

Fire at SpaceX Cocoa facility

https://twitter.com/NASASpaceflight/status/1148271954144743424

[Anonymous No.10790789]

>>10790763

If NASA's moon plans get turfed, the outcome for NASA lunar exploration can only improve. You'll get a lot of commentary otherwise.

[Anonymous No.10790793]

>>10790765
It wasn’t actually in the facility, but a van inside the facility.

[Anonymous No.10790799]

>>10787941
how complicated is super heavy looking at this, I mean how much extra reinforcement if any. Or are we just talkint about giant steel rings with an attachment point and instead some complicated plumbing

[Anonymous No.10790803]

>>10790793
Oh fuck, sorry guys. I was listening to my mixtape on the way to work and forgot to turn it off.

[Anonymous No.10790825]

>>10790747

Although more Skylab can fit into that too.

[Anonymous No.10790857]

http://astronautix.com/a/apollolunarlanding.html
"Apollo was one of the great technical endeavors of the 20th Century. In the United States, it left remarkably little legacy. The spacecraft and launch vehicles developed at such enormous expense were abandoned and replaced by pursuit of a chimera - a fully reusable space shuttle. For the hundreds of thousands of industry and government workers that contributed to the project, it was one of the greatest periods of their lives. The generation that had learned how to get things done quickly in World War II were again called to action in the prime of their lives. Compare the schedule of Apollo - seven months from the decision to go ahead to issuance of all major contracts for the spacecraft, rocket stages, and launch site - to NASA's current performance. There were giants in those days - we shall not see their like again."

[Anonymous No.10790957]

>>10790747
They probably could have built a docking adapter node to attach other stuff to it.

[Anonymous No.10791046]

>>10790765
Cocklicker had a live stream on jewtube regarding this.
What a fag

[Anonymous No.10791056]

>>10790857
>There were giants in those days - we shall not see their like again."

not so fast, boomer scum

[Anonymous No.10791117]

>>10790799
the internals are super complex, there's all sorts of stringers and baffles and strengtheners welded to the inside of the tank

[Anonymous No.10791566]

>>10789604
Yeah, and I was originally asking which of the numbskulls here was that troll.

[Anonymous No.10791568]

>>10790063
PART
A
R
T

AND
N
D

PARCEL
A
R
C
E
L

[Anonymous No.10791876]

new thread >>10791873