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/sci/ - Science & Math

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File: 345 KB, 1983x1566, lunarlander.jpg [View same] [iqdb] [saucenao] [google]
6768406 No.6768406 [Reply] [Original]

how in the fuck did they fly this thing back to earth?

rocket /sci/entists pls explain

>> No.6768410

gravity on the moon is weak enough that you can use small rockets to achieve orbit and transfer to a terrestrial orbit

>> No.6768422

that thing looks so retardedly fragile
as if it's made out of paper or plastic and you could easily break it apart with one hand

>> No.6768433
File: 78 KB, 811x448, lm-rr-csm-target-orientation.jpg [View same] [iqdb] [saucenao] [google]
6768433

They used the top part of that to get into lunar orbit. Then they met up with the CSM and returned to Earth in that. Still amazing though.

>> No.6768440

>>6768422
I'm sure they must have been terrified at some point of being stranded on the moon.

>> No.6768445
File: 114 KB, 768x432, 1000509261001_2051017826001_Bio-Biography-Neil-Armstrong-SF.jpg [View same] [iqdb] [saucenao] [google]
6768445

>tfw Neil Armstrong will forever go down in history as the first human being to walk on a celestial body different than our home planet
>tfw you will never go to space

>> No.6768449

>>6768422

>forgetting that there's no air resistance or friction in space

what's going to rip it apart? muh speghetti monster? fuck off retard

>> No.6768453

It didnt hapoen

>> No.6768462

Why no dust on foot pads?..it landed with rockets kicking up moon dust that is like baby powder. ..placed there perhaps???

>> No.6768463

>>6768449
cant u read

>> No.6768471

Cant be done...Russians said they would have done it too if possible. ..too much radiation. ..

>> No.6768480

>>6768440

I was at the Smithsonian Air and Space a couple years ago... those ships looked like tin cans. Those guys were brave as hell.

>> No.6768484

Or it didnt happen...I saw the tin cans...no way...

>> No.6768489

Good guys yes...fly to moon...a trip we cant do today with advanced technology. ...no

>> No.6768495

>>6768484
ok,

>> No.6768497

>>6768471

No, see, when they said that, they were referring to your mom.

>> No.6768500

>>6768489
We could do it today... it's just expensive, and freakishly dangerous, and we get much better bang for our buck by sending robots.

>> No.6768501

>>6768489
always amazes me that someone can believe in conspiracy theories, but he cant even try to find the answers that can be easily find with google

>> No.6768507 [DELETED] 

She built the ship using her nipples and vodka...said your mom was good entertaining troops signing up to go...she must have been a busy lady...

>> No.6768516

Fraud

>> No.6768526

I see you tow the party line ..interesting

>> No.6768530

>>6768406
They didn't. They flew the top half of it to lunar orbit, where they docked with the lunar orbiter, half of which they flew back to earth.

>> No.6768532

>>6768526
Toe the party line. Toe. You need a truck with a big hook, or possibly a barge, to tow things.

>> No.6768534

>>6768462
There's no air on the moon, retard. Dust particles fly in elliptical trajectories.

>> No.6768587

>>6768449
I don't fear the spaghetti monster, no, I fear the Space Krakken.

One moment it's smooth sailin', movin' towards Eelo, the next, off at .8C, flyin' into the cold depth o' space.

I've lost many a fine crewman to 'em.
Now thars' only Jeb.

>> No.6768657
File: 137 KB, 1280x960, Orion_Service_Module.jpg [View same] [iqdb] [saucenao] [google]
6768657

>>6768489
>can't do today

my spacecraft when

>> No.6768692
File: 2.06 MB, 1920x1080, screenshot73.png [View same] [iqdb] [saucenao] [google]
6768692

>>6768587

ksp respeck.

props bro.


>>6768440

the ignition switch for the ascent stage of the lunar landing module... didn't work. seriously, they flipped it and it broke off. they had to manually start it a-la hotwiring a car.

that must've been an interesting moment.

>>6768422

it is incredibly fragile, there wasn't any reason for it to not be. it's covered with what is effectively tinfoil to reflect the light from the sun and prevent it from melting, but other than that it's just really, really thin metal and plastics.

>>6768406

gravity on the moon is so weak, all you need to do is reach its escape velocity, then slow down a little so your periapsis is within the earths atmosphere. at that point, friction from the air will slow you down the the rest of the way, heatshield withstanding. an incorrect re-entry angle would cause them to either re-enter too steeply and incinerate themselves, or 'bounce' off the atmosphere and just skip off into space forever.

>> No.6768726

>>6768692
Thank you.

I'm loving v0.24. So many new parts that I used to need mods for!
I started playing at v0.18. I'm always impressed with how much has been added.
I can't wait to see what the final version looks like.

What's your playstyle? I like to do a bit of serious playing and a lot of outlandish, but functional creations.


>the ignition switch for the ascent stage of the lunar landing module... didn't work. seriously, they flipped it and it broke off. they had to manually start it a-la hotwiring a car.

Seriously? Which mission was that? I never heard about that.
I bet they were wishing they had the seriously-kerbal rocket-segway:
http://en.wikipedia.org/wiki/Lunar_Escape_Systems

>> No.6768893

>>6768692
>what is effectively tinfoil
WAT

>> No.6768936

>>6768406
>how in the fuck did they fly this thing back to earth?

Play MOAR Kerbal Space Program

>> No.6768941
File: 267 KB, 1280x768, screenshot5.png [View same] [iqdb] [saucenao] [google]
6768941

>>6768936
forgot pic

>> No.6768947
File: 413 KB, 1280x768, screenshot9.png [View same] [iqdb] [saucenao] [google]
6768947

>>6768941

>> No.6768954

The kerbal space program was only created to make everyone believe the lie. There is no greater achievement that fooling everyone for in the land of the blind the one eyed person is king

>> No.6768958

>>6768893

well actually "tinfoil" is definitely a reductive term

https://en.wikipedia.org/wiki/Multi-layer_insulation

>> No.6768960

>>6768954
>The kerbal space program was only created to make everyone believe the lie.

We had the technology to fly a rocket to the moon and return to earth in the 60's

And we certainly had the funding, and desire for public relations victories....

So, why exactly was the "Lie" that you are speaking of?

>> No.6768964

>>6768406
They didn't.

They transferred to the command module in lunar orbit and flew that back to earth

>> No.6769277
File: 703 KB, 1242x1857, lunar module.jpg [View same] [iqdb] [saucenao] [google]
6769277

Pretty impressive piece of engineering if you ask me.

>> No.6769304

>>6768410
This, the fact that the moon lacks an atmosphere also helps

>> No.6769316

>>6769277
Calling the engineering that went into space flight/moon landings "impressive" does not do it justice. Without the space race, numerous breakthroughs in engineering would not have occurred. The challenge of maned space flight was a direct catalyst for the miniaturization of technology. Without nasa, we would not have iPhones, many plastics and synthetic textiles, or gps

>> No.6769323

>>6769316
Yes, I know. I was specifically speaking to the engineering behind the LM. Anyone interested in it's design and construction should read Tom Kelly's book, Moon Lander.

It was not my intention to slight NASA, the space program, or the people behind them.

>> No.6769636

>>6768422
>>6768692
>>6768893

Yup it's true it's incredibly fragile. When a workman on earth dropped a wrench it went straight through the floor.

>> No.6771527

>>6768422
thats because it's not real
the moon landings were FAKED

>> No.6771537
File: 56 KB, 380x323, 404.jpg [View same] [iqdb] [saucenao] [google]
6771537

>>6771527
>the moon landings were FAKED
the same way your mother fakes her orgasms?
>I couldn't resist

>> No.6771807

>>6768692
Not ignition switch; circuit breaker, which was replaced by a pen, iirc.

>> No.6772474
File: 139 KB, 800x614, moon ruins.jpg [View same] [iqdb] [saucenao] [google]
6772474

>>6771527

The photographic evidence seems faked not because we never went there but because what we found when we did was censored out of most of the photos.

Pic related

>> No.6772478

>>6768406
with rockets? damn that was a tough one

>> No.6772672
File: 177 KB, 500x415, tickseatingsalad.png [View same] [iqdb] [saucenao] [google]
6772672

>>6772474
That looks like a fingerprint to be honest. Grounds all distorted too.

>> No.6772677
File: 88 KB, 1082x1055, 1381212547156.png [View same] [iqdb] [saucenao] [google]
6772677

>>6768406
>how in the fuck did they fly this thing back to earth?

they didnt it was all a hoax

>> No.6772686
File: 180 KB, 800x587, Chang'e-3-Jade-Rabbit-Dec21-Army-glass-shadow2.jpg [View same] [iqdb] [saucenao] [google]
6772686

>>6772672
There's dozens more just like this one, some in better quality than I could find with a quick search. If truly interested, Youtube Richard Hoagland's briefing to the United Nations. Then, if you're satisfied he's not a crackpot, look up his other stuff.

Pic related, basically just turn up the gamma on any moon photo and you'll start seeing geometric glass-like structures. This one from Chinese moon rover.

>> No.6772687
File: 111 KB, 800x699, Chang'e-3-Opal-glass-Comp-Three.jpg [View same] [iqdb] [saucenao] [google]
6772687

>>6772686
One moar from Chinese

>> No.6772701

>>6768422
This is why I don't understand why people who understand general/newtonian physics still aspire to be astronauts in today's day and age.

It is absurd. Probability is a BIG DEAL, particularly in rocket science.

>> No.6772704

Who cares if it was fake?

the USA still won the space race & that's all that matters. Now we are the rulers of organic synthesis and all sciences.

>> No.6772741
File: 1.57 MB, 1000x1389, Apollo%20Lunar%20Lander%20.jpg [View same] [iqdb] [saucenao] [google]
6772741

>>6772701
People who understand general newtonian physics understand that it's not going to be acted by any aerodynamic forces. They probably also understand that understand that under all that thermal fabric is a rigid metal frame and that it was extensively tested to make sure that it works.

Honestly, the whole thing is built similarly to most airplanes on the inside.

>>Probability is a BIG DEAL, particularly in rocket science.
ever heard of probabilistic risk assessment? Every spacecraft launched by NASA has it performed on it.

here's some engineering data on the landing system:
https://www.hq.nasa.gov/alsj/tnD6850LMLandingGearSubsytem.pdf

We did this with fucking slide rules.

>> No.6772745

how would a manned mars landing work? it's closer to the earth's mass right? wouldn't you need a multi stage rocket to get the lander off?

>> No.6772771

>>6768406
>how in the fuck did they fly this thing back to earth?

They didn't, it fell back, that's the entire point.

Going to the moon is hard, with the whole atmosphere thing and the cycle of needing fuel to carry fuel to carry fuel... and huge earth gravity pulling back.

But from the moon to Earth, you really don't need to go that far from the moon towards Earth or be moving all that quickly to be trapped back by Earth gravity and simply fall back here.

>> No.6772790

>>6772745
Mars still has just 1/3rd of Earth's gravity and a vastly thinner atmosphere. SSTO from the Martian surface is plausible.

Most of the difficulty comes from the huge delta-V cost of shipping fuel to Mars, so that it's essentially impossible to do Mars return unless you manufacture your propellant on Mars.

>> No.6772804

okay, i understand that the gravity isn't so strong like on earth, but obviously it's the non-existent air resistance, that made it possible. how much less fuel would we need to get a space shuttle into orbit without atmosphere on earth?

>> No.6772807
File: 55 KB, 461x435, gc.jpg [View same] [iqdb] [saucenao] [google]
6772807

>>6772686
>Richard Hoagland
>not a crackpot

oh boy

>> No.6772849

>>6768954
https://en.wikipedia.org/wiki/Retroreflector#On_the_Moon

>> No.6772859

>>6772849
And it's only detectable by a handful of institutions using special equipment and recieving government grants. Literally trivial to fake.

>> No.6772864

>>6772859
https://en.wikipedia.org/wiki/Third-party_evidence_for_Apollo_Moon_landings
You really have to be delusional to think that the moon landings were fake. Pick something harder to prove if you want to spout bullcrap.

>> No.6772878

>>6772864
Oh, of course NASA sent the Apollo landers to the Moon. They just weren't manned. We had nowhere close to the capability to do manned Moon missions, but just putting an unmanned lander on the surface was far easier. The Apollo spacecraft could never have flown as designed: the actual LEM and crew capsule were unfurnished empty shells with no life support, to save on weight.

The actual "lunar" footage was filmed on Earth, intercut with actual data and pictures from the real spacecraft.

>> No.6772890

>>6772878
>these people actually exist
it's impossible to change the mind of a conspiracy theorist
why is this /sci/? is it fun to them?

>> No.6772892

>>6772890
Actually, I think it's completely obvious that the manned Moon landings happened. I'm just messing with you.

>> No.6772904

>>6772892
Thank God, I was about to bring up how you couldn't fake the trajectory of thrown objects by just showing them down
I never really took conspiracy theorists seriously until I was at an ex-girlfriend's and her extended family was all talking about how fake the moon landing is and how 9/11 and the Kennedy assassination was an inside job. Now I realize there are actual people out there who think these things. A lot of them I see on /sci/ are probably trolls though

>> No.6772912

>>6768501
there's even all you need about it on Wikipedia.
https://en.wikipedia.org/wiki/Moon_landing_conspiracy_theories
https://en.wikipedia.org/wiki/Third-party_evidence_for_Apollo_Moon_landings

>> No.6772915

>>6771527
1. buy decent telescope
2. see tracks on the moon left there by astronauts
3. ????
4. stop being a retard

>> No.6773056

>>6772915
No, not while you're in the atmosphere...maybe from LEO...
From Earth it's difficult to spot the parts of the landers left behind, even the "moonbuggy" is hard to see at all...

>>6772859
Doable with a pile of stuff from fleabay at prob <$1000 and a PC...

>> No.6773088

>>6773056
Okay then, here's a proposal. /a/ made Katwa Shoujo. Why hasn't /sci/ teamed up on a project. Surely there's enough IQ here to float a telescope up to LEO and stabilize it long enough to take a picture before parachuting down to Earth.

>> No.6773130
File: 171 KB, 670x950, 141105226787.jpg [View same] [iqdb] [saucenao] [google]
6773130

>>6773088
>Okay then, here's a proposal. /a/ made Katwa Shoujo. Why hasn't /sci/ teamed up on a project.

We already have...

>> No.6773159

>Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace.

>These brave men, Neil Armstrong and Edwin Aldrin, know that there is no hope for their recovery. But they also know that there is hope for mankind in their sacrifice.

>These two men are laying down their lives in mankind’s most noble goal: the search for truth and understanding.

>They will be mourned by their families and friends; they will be mourned by their nation; they will be mourned by the people of the world; they will be mourned by a Mother Earth that dared send two of her sons into the unknown.

>In their exploration, they stirred the people of the world to feel as one; in their sacrifice, they bind more tightly the brotherhood of man.
>In ancient days, men looked at stars and saw their heroes in the constellations. In modern times, we do much the same, but our heroes are epic men of flesh and blood.

>Others will follow, and surely find their way home. Man’s search will not be denied. But these men were the first, and they will remain the foremost in our hearts.

>For every human being who looks up at the moon in the nights to come will know that there is some corner of another world that is forever mankind.

>> No.6773163

>>6773159
Most beautiful conspiracy theory I've ever read.

>> No.6773253

>>6772741
You typed that all out for a troll post? Must be lonely in your part of the world anon.

I'll send you my chakra qi today.

>> No.6773257

>>6773088
>>float up to LEO
You can't float things up to LEO

>> No.6773625
File: 103 KB, 697x989, Buzz_Aldrin_(Apollo_11).jpg [View same] [iqdb] [saucenao] [google]
6773625

>>6768445
h-hhey guize remember me? I was number two.
No?
ok...

>> No.6773636

>>6773163
That was an actual speech prepared for Nixon in the event that they got stranded there.

>> No.6773650

I have more important question here, guys - HOW DID THEY SHIT during the mission in that tiny capsule? Did they just pull down the pants and shit into plastic bag right in front of their fellow astronauts? Or did they keep their shit in bowels for the entire 8 days?

>> No.6773702

>>6768406
play more kerbal space program

>> No.6773712

>>6773650
>Did they just pull down the pants and shit into plastic bag right in front of their fellow astronauts?

Essentially, yes. If you want privacy to shit, don't become an astronaut.

btw, shitting in freefall is actually a pretty difficult engineering challenge. Gravity is what makes a turd pull away from your body, and what makes it break off. In freefall, something has to do both of those things manually. Plus looser, explosive turds become a big problem, since they could easily end up flying all over the cabin.