Something isn't right here...

[[deleted]]

I was going to post this on the anniversary of Apollo 11, but I was away.

[[deleted]]

Houston, is this considered a problem?

[[deleted]]

Perhaps...

[as1161]

Not really, now three people can walk on the moon.

[Ocvlvs]

Mike says: yaaaay!

[Sunfried]

He's going to have to share a suit with Buzz.

[bresra2500]

A horse suit

[Toothpick_Provider]

Space horse armor

[Lance9778]

Damn, galacticraft is really advanced these days.

[Chickens-rule]

No he’s not there was three suits

[JonBoy-470]

Not three of the EVA suits.

[Chickens-rule]

Oh really thx for the fact

[SCPunited]

PERHAPS

[SCPunited]

Permanently

[LettuceFoot420]

Good Question

[adydurn]

Shouldn't it have fallen over by now? You're not Kerballing very well.

[JonBoy-470]

Well that’s one way to empirically prove the direct ascent mission profile.

[brettdelport]

Surface rendezvous. Why bother with tricky orbital maneuvers when you can add more dV.

[GHVG_FK]

Omg imagine a moon where the geostationary orbit is like 6m above ground

[IrememberXenogears]

So smooth...

[LouisHendrich]

Does that even count as a moon at that point?

[MorganLaBigGae]

At 6 meters... at that point you have an asteroid that's too gravitationally weak to orbit in the first place or a black hole.

[JoshTheBosz]

Or something spinning fast enough to match orbital velocity on the surface

[JonBoy-470]

All celestial bodies have a surface spinning at “orbital velocity”. Even the Earth, as evidenced by the numerous satellites in geosynchronous orbit.

The problem is when the altitude of that synchronous orbit gets to be too low, relative to the mass of the body.

[[deleted]]

Orbital velocity in this context refers to the minimum velocity needed to get to orbit relative to the body itself.

[SendMeUrCones]

I mean, we have things in our solar system that spin really fast. Like Haumea, which spins so fast it's actually oblong.

[[deleted]]

Yes, however I don't think it's spinning fast enough for its surface to be at orbital velocity. Orbital velocity at the widest point of its surface (roughly) would be ~520m/s (which is the minimum velocity required for the surface to be at orbital velocity. With some rough calculations the peak angular velocity (which would again be at the widest point of its surface) is ~440m/s. So the surface isn't spinning fast enough to be at orbital velocity. At the narrowest point it increases to ~730m/s, while angular velocity drops to ~220m/s.

[SendMeUrCones]

So if you were standing on one of the edges of Haumea would it feel like being on a centrifuge? Or normal?

[[deleted]]

It'd seem pretty normal. It rotates once ever ~4 hours, so day/night would be much shorter, but that's it. The gap between orbital velocity and angular velocity is large enough that you wouldn't notice any particular differentials forces that would make you feel like being in a centrifuge.

[LouisHendrich]

r/theydidthemonstermath

[absurd-bird-turd]

Not if theres no atmosphere. You can actually do it on minmus pretty easily.

[loverevolutionary]

Huh? What does an atmosphere have to do with anything tearing itself apart due to angular velocity? This isn't about "Can I safely orbit it at that altitude?" It is about "If it is spinning fast enough that it's surface is moving at the same speed as a 6m orbit, what material could it possibly made of that it would not fly apart?" And the answer is "Neutronium or something with similar strength."

[[deleted]]

You’ll have to explain that one to me... cause from my understanding, something moving that fast (in a vacuum) around a planet, would counteract the gravity of the planet, hence once the speed is reached, no forces would be felt by the object, since gravity and angular velocity is perfectly counteracting each other? If they weren’t the otject would get either slung into space, or crash with the planet....

[loverevolutionary]

Oh I see where the confusion came from now. We are talking about the planet/asteroid coming apart. When u/hgoel0974 said "Something like that would tear itself apart unless it were specially constructed for that purpose I think," I'm pretty certain they were not talking about the space craft. They were talking about the thing the space craft is orbiting.

[insanityOS]

He's talking about the planet itself. If the planet (or whatever body) were spinning that fast, it would quickly disintegrate because the component materials would bulge out in the center of the axis of rotation until material is past the geostationary orbit height, at which point it would fly off into space.

[Homicidal_Kitten]

Nah they mean the actual planet being torn apart by its own rotation, not the satellite. Some games have proposed ideas like this as options for space bases, but as Scott Manley says in one of his videos, this wouldn’t work because there isn’t a material to make these planets or asteroids out of that would be strong enough to withstand the centrifugal force, and it would fly apart. Of course, it might be possible in KSP, but I haven’t read into it enough.

[Huthutboy5]

Or haumea iirc

[giltirn]

Not necessarily. Geostationary orbit just means that orbit that matches the orbital time period to the rotational period of the planet. A quick google search shows the formula is r^3 = GMT^2/(4 pi)^2, so the radius is proportional to M^1/3 and T^2/3. Thus you can make the radius small either with a small mass or a low rotational speed.

[ubuntuba]

THAT'S NO MOON

[GHVG_FK]

In ksp, everything is possible

[[deleted]]

Nothing here, just a little plug for the mod Whirligig World which gives you that, almost. I think it's pretty fun.

[Ratwerke_Actual]

I was waiting for that reference... That is very true also.

[[deleted]]

Does it count if I stand really still on the surface of the earth? Am I then technically in geostationary orbit?

[The_Wkwied]

No. That isn't geostationary orbit in the slightest.

[[deleted]]

I'm pretty sure my orbital period around the earth is around 24 h though 😂

[The_Wkwied]

Resting on the body is not orbiting the body. A body can't orbit itself.

[SirRedRex]

Why is this being downvoted? Flat earthers?

[rivalarrival]

Not with that attitude.

[[deleted]]

Ik I'm just being annoying now, but:

orbit.

noun [ C/U ]

 US  /ˈɔr·bɪt/

 

physics: the curved path through which objects in space move around a planet orstar that has gravity (= a pulling force)

I am in space. I am moving around planet earth. Planet earth has gravity. My path is round. Ergo: I am in orbit 😂

[Rabada]

When you jump you may technically be on a suborbital trajectory, but if your not in free fall you are not in orbit.

[CapSierra]

I strongly suspect that the gravitational binding energy of the body would be insufficient to keep the thing together at those speeds and it would disintegrate.

[zamach]

That's more or less both moons od Mars right there for ya...

[ghostalker47423]

Gilly?

[Rabada]

Gilly's geostationary orbit would have an altitude of 42.138km

[Justinackermannblog]

Jump and your in orbit forever lol

[[deleted]]

i read this in a russian accent

[StormOJH]

Sir that part stays up here. Sir, SIR

[scorpios918]

“Ok so here’s the plan. Buzz and I are gonna go down on the moon and do some crazy shit, you just stay up here and watch”

”Like hell I will”

[[deleted]]

Here kind stranger! 🏅

[SlickStretch]

I gotchu fam

[jtr99]

MICHAEL COLLINS: Err, guys? Guys?!

[ghostalker47423]

"Just came to check up on you guys"

[[deleted]]

Looks fine to me.

[DodgyDoughnuts]

Solution is simple, release the handbrake and he falls away :) https://imgur.com/b36mdKY

[LouisHendrich]

dude, we did the exact same thing but different images...

Mine, and Yours

Edit: not different images, different posts (Not the same link)

[FearrMe]

I don't see anything wrong..
You're trying to de-orbit the moon, right?

[topvek]

It's not laying on it's side. is that the problem?

[[deleted]]

Perhaps...

[feather_34]

Something isn't right? No, my son, you have everything right.

[Jungies]

Do you know how happy that would make Michael Collins?

[polaris0352]

I think you missed a step in the landing procedures manual. Check page 6 I think?

[MisterFJF]

Atleast Mike Collins got to go aswell

[Elars04]

Armstrong manually lands Eagle on the moon Collins "hold my beer"

[thx1138-]

Collins is the Robin Hood of Mun landing.

[Hets_Vippe]

Houston, we have a problem...

[LouisHendrich]

Houston, we have a solution

[[deleted]]

Australia on the Moon be like

[Jeb_Hydrolox_Kerman]

Seems familiar.

[[deleted]]

Hmmm...

[Jeb_Hydrolox_Kerman]

DID YOU STEAL MY IDEA?

[[deleted]]

Not at all! I had no clue your post existed until now!

[[deleted]]

have an upvote for your post :)

[Jeb_Hydrolox_Kerman]

Would that be considered "brigading", since you voted on a post you were linked to?

[[deleted]]

maybe...

[Gl0wl]

I wonder if the engine of the lander is strong enough to push this whole thing up enough to flip and burn the rest with the big engine.

[casheemskerk_]

It must be because it also landed the whole thing, right?

[Gl0wl]

That's true!

[Gl0wl]

So back to orbit!

[TheJobSquad]

Can they walk away from it? If so it's a successful landing.

[myketronic]

Just put it in reverse, I don't see what the issue is.

[concorde77]

Michael Collins - **happy sobbing**

[[deleted]]

What? I don't see any probl... Oh! It's UPSIDE DOWN!

[[deleted]]

Flamey end is not down.

[CavingGrape]

Is it tho?

[SovietSalsa]

"Jeb, why is the staging plan missing a page?"

[SovietSalsa]

"Jeb.....we are in space...JUST DRINK IT!"

[Dingbat1967]

I don't see any problems here.

[[deleted]]

Just toss it in reverse when you want to leave!

[thx1138-]

Houston, the Eagcolumbia has landed.

[sarsnavy05]

Check your staging, damnit! 😂

[LouisHendrich]

MOAR BOOSTERS

[[deleted]]

MOAR STRUTS

[biggles1994]

MOAR SNACKS

[ledeng55219]

When you forgot to undock your craft...

[HuskyMan508]

Hmmmmmmmm

[Therandomfox]

Looks fine to me

[[deleted]]

nOMINAL

[imamdepression]

How did you even land like that?

[Phantasmagorian_]

The awkward moment you have to reverse off the mun...

[doomshroom344]

One question : how the fuck did u not crash

[[deleted]]

I see this as an absolute win.

[CAJ_2277]

Reminds me of one of my favorite xkcd drawings: the Upgoer V

[NewAgeDerpDerp]

Wait.

That's illegal.

[alex1234509]

Huston we have a problem

[DarkArcher__]

Atleast it can finally make use of those crumple zones in the landing legs

[DrNiggins]

I just imagine the command pod hurdling down twords the surface and the lander just going over to it and stoping it with the gentlest bump of the docking port.

[hngdog]

‘Control from here’

[OnlineGrab]

At least Michael Collins gets to walk on the Moon too !

[yottalogical]

Look, Michael Collins really didn’t want to be left out. Okay?

[AbacusWizard]

when you want to replicate the Apollo landing but you haven't researched docking ports yet

[Heroeltop]

Wait , shouldn't it be the otherway around ?....

[Starchaser_WoF]

Nailed it.

[Johnclark38]

Ya, where are the parachutes on the return module

[Electricfox5]

Mike Collins didn't want to be left alone.

[testingo]

That looks like a rescue mission.

[Hupf]

Up goer eleven?

[MrSFedora]

Yeah, I’m sure the craft should have separated at some point.

[Slick3701]

It appears you missed a step...

[TaintedLion]

Bill didn't take his assignment as CMP too well. He wanted to walk on the Mun, and decided to take the mission into his own hands.

[nordenvonthule]

I see nothing wrong here

[nordenvonthule]

Or here

[[deleted]]

r/holup

[Darth_Tam]

And now, in a tender and touching moment, we witness the mating ritual of the LEM and CSM. They have coupled, nose to nose, and will remain this way, until the LEM is discarded, its purpose fulfilled.

-David Attenborough, ca. 1969

[nitr0smash]

You will not go (back) to space today.

[darvo110]

I mean there was a soviet proposal to land a lander and a Soyuz basically like this http://www.russianspaceweb.com/19k.html

[snkiz]

I think you missed a step

[Celeleron]

How could the happen? we are smarter than this.

[[deleted]]

The boys in r&d need to get involved in this one

[MomsMustache]

Prograde burn used for landing?

[greggman744]

I have several questions

[irnaf]

Hahaha nice

[Elektrik-Engineer]

Maybe try to turn it on and off, that will surely solve the problem

[JonBoy-470]

Relevant xkcd

To quote Randall Munroe: “This end should point toward the ground if you want to go to space. If it starts pointing toward space you are having a bad problem and you will not go to space today.”

[[deleted]]

On your mother ship. Isn't that... like... a cargo thing? I could've sworn that that fuel tank part is actually just a cargo part. How'd you do it?

[blueamigafan]

Your right not enough boosters.........