Basic orbital mechanics

Apr 26, 2022 2:17 PM

Ragu: https://youtu.be/hKdpzagTUxk

Kerbals! Go Jeb, go!

3 years ago | Likes 3 Dislikes 0

We didn't have fancy gifs when I was a 10 year old in 1969, but I soaked up all the orbital mechanics needed for Apollo 11 from newspapers!

3 years ago | Likes 1 Dislikes 0

This is how you fly Nomai ships in Outer Wilds

3 years ago | Likes 1 Dislikes 0

Well, 34 seconds, but who's counting...

3 years ago | Likes 1 Dislikes 0

Fastest way to learn orbital mechanics... play Kerbal Space Program

3 years ago | Likes 1 Dislikes 0

I wholly approved of everyone instantly thinking KSP

3 years ago | Likes 18 Dislikes 0

Something something Kerbal

3 years ago | Likes 16 Dislikes 0

WITH A CALCULATOR!!

3 years ago | Likes 1 Dislikes 0

Or as I call it "Falling With Style"

3 years ago | Likes 3 Dislikes 0

Jebediah?

3 years ago | Likes 1 Dislikes 0

This was fantastic!

3 years ago | Likes 1 Dislikes 0

3 years ago | Likes 5 Dislikes 0

Get Spaceflight Simulator for your phone. You're welcome everyone.

3 years ago | Likes 3 Dislikes 0

We get it, you play kerbal. :P

3 years ago | Likes 1 Dislikes 0

KSP taught me a lot, like 'periapsis' and 'apoapsis' and 'is it technically a crash if it exploded on the launchpad?'

3 years ago | Likes 10 Dislikes 0

"Unscheduled rapid disassembly event"

3 years ago | Likes 4 Dislikes 0

This is cool, but the ship is so small I can't see the mechanics

3 years ago | Likes 3 Dislikes 0

Going so fast, you fall right past the planet. 'Free fall'.

3 years ago | Likes 1 Dislikes 0

Well, now I’m pretty sure I can launch a rocket into space.

3 years ago | Likes 4 Dislikes 0

During what periods would one experience zero gravity?

3 years ago | Likes 1 Dislikes 0

Constantly none.

3 years ago | Likes 1 Dislikes 0

There was a 'game' at an space-themed museum we went to when I was a kid that had you try to gauge the amount of thrust to apply to >

3 years ago | Likes 17 Dislikes 0

> a rocket in order for it to end up in orbit. Mine immediately nosedived into the ground. My brothers left orbit and disappeared into >

3 years ago | Likes 17 Dislikes 0

> space. My Dad almost got it right, but his still came down after a while. Weird little memory that just cropped back up thanks to this.

3 years ago | Likes 17 Dislikes 0

patched conic orbital mechanics*

3 years ago | Likes 3 Dislikes 0

So. To quote Douglas Adams. 'The trick to flying, was falling, but missing the ground.'

3 years ago | Likes 3 Dislikes 0

I "learned" this shit in university by I never truly understood it until I played KSP.

3 years ago | Likes 13 Dislikes 0

3 years ago | Likes 4 Dislikes 0

The animation doesn't really show it, but it's like playing billiards on an uneven surface. The Earth's in a gravity well, you have to go

3 years ago | Likes 1 Dislikes 0

fast to climb out of it and you get slower as you get "higher". Like an airplane trading speed for altitude. But you have to retain enough

3 years ago | Likes 1 Dislikes 0

speed to make it over the hump between the earth & moon. IIRC the Apollo capsules got down to about 1500mph or so and then sped back up to

3 years ago | Likes 1 Dislikes 0

5300mph or so falling towards the moon

3 years ago | Likes 1 Dislikes 0

Kerbs flying through space forever....

3 years ago | Likes 47 Dislikes 0

Fine, I'll reinstall Kerbal!

3 years ago | Likes 138 Dislikes 0

I'm waiting on the sequel

3 years ago | Likes 12 Dislikes 0

I hope it's decent. The developer drama and engine change worry me quite a bit.

3 years ago | Likes 3 Dislikes 0

As with most games, I'm hopeful but wary. Not a lot of gameplay has been shown, but they claim vanilla colonies, interstellar flight 1/?

3 years ago | Likes 2 Dislikes 0

multiplayer, along with a ton of QoL features without mods, while still supporting mods. So, things might be great. 2/2

3 years ago | Likes 2 Dislikes 0

Yeah, it's been a while and I do love that game. I could never manage orbital docking though. Couldn't get ships to match speeds

3 years ago | Likes 6 Dislikes 0

Key is to get into a higher or lower orbit than your target, plan a burn that intersects the target's orbit and gets you nice and close to

3 years ago | Likes 1 Dislikes 0

it (maneuver planner is a godsend for this), and then match the target's orbit once you're close (~3km or so is generally good enough). And

3 years ago | Likes 1 Dislikes 0

beyond making sure you get close to it, completely ignore your target until you're in the same orbit and actually going to dock with it.

3 years ago | Likes 1 Dislikes 0

Orbital docking in low kerbin orbit is for physicists who are also ballerinas…. I used to do all my docking a high orbit to slow it all down

3 years ago | Likes 3 Dislikes 0

I should start playing KSP again, still waiting for KSP2 to come out

3 years ago | Likes 155 Dislikes 1

For less unforgiving controls but a captivating story, try Outer Wilds (not Worlds, Wilds)

3 years ago | Likes 10 Dislikes 1

Not the same in any way, but a FAR superior game

3 years ago | Likes 2 Dislikes 0

Good luck with KSP2. It's changed studios, had a big corporate controversy and been delayed multiple times. I'm not holding out for it.

3 years ago | Likes 38 Dislikes 4

I'll give it a shot even if I know it's not going to be everything I wanted.

3 years ago | Likes 1 Dislikes 0

I... was not aware of this, damn. Was looking forward to the game too. :C

3 years ago | Likes 9 Dislikes 0

Pretty sure the studio got bought out / went under and a lot of the devs moved to the new one.

3 years ago | Likes 3 Dislikes 0

Let us take solace in the fact that they've already sunk a ton of cash and want to see some return on it.

3 years ago | Likes 14 Dislikes 0

I know it, still looking forward to giving it a try though when it eventually does come

3 years ago | Likes 10 Dislikes 0

Same, but I'm not expecting anything mind-blowing, and I'm expecting it in 2023 at the earliest.

3 years ago | Likes 3 Dislikes 0

welp, time for some people to create OSP (Open Space Program)

3 years ago | Likes 2 Dislikes 0

Do you think it won't come out? despite covid and the studio stuff, it seems good progress has been made, and updates 1/month

3 years ago | Likes 3 Dislikes 0

I'm thinking it'll come out earliest mid-2023 and won't have anywhere near the content they've promised, or will be a buggy mess

3 years ago | Likes 2 Dislikes 1

Apart from them reiterating on the interstellar travel stuff a couple of weeks ago they've been silent for 5 months

3 years ago | Likes 2 Dislikes 1

So many dead Kerbals...

3 years ago | Likes 31 Dislikes 0

RIP, Jedediah.

3 years ago | Likes 11 Dislikes 0

Fun part : if your ship end up stranded in orbit without any fuel to come back, they live forever, stranded in their spaceship.

3 years ago | Likes 6 Dislikes 0

Unless you can manage an orbital docking (which is way over my current abilities) to rescue it, I guess...

3 years ago | Likes 3 Dislikes 0

Do they still have unlimited EVO fuel refills when you enter and exit a capsule? In the past you could "get out and push" your way home.

3 years ago | Likes 6 Dislikes 0

But don't you burn on reentry?

3 years ago | Likes 4 Dislikes 0

It's so random. Somehow I got a small satalite with full extension on the solar array to survive re-entry. With only my antenna blowing off.

3 years ago | Likes 5 Dislikes 0

So this is how you play Kerbal Space Program

3 years ago | Likes 456 Dislikes 1

Well, usually you preform a Hohmann transfer, but essentially yes.

3 years ago | Likes 1 Dislikes 0

Yes

3 years ago | Likes 6 Dislikes 0

This, plus a whole set of curse words.

3 years ago | Likes 4 Dislikes 0

Yeah, this literally looks like the Orbital Tracker Station view. Down to the dotted projection with the solid trajectory.

3 years ago | Likes 16 Dislikes 0

Yeah I was just talking about this with a friend a few days ago. Now I have to go play it

3 years ago | Likes 9 Dislikes 1

Alright I got as far as doing a flyby of the Mun during lunch break; will try flying by Minmus later tonight

3 years ago | Likes 4 Dislikes 1

Land on Minmus first, it's easier and you get just as much science data!

3 years ago | Likes 2 Dislikes 0

No, there you just strap on more boosters until you succeed.

3 years ago | Likes 3 Dislikes 0

One thing Kerbal is good at is giving you a visceral appreciation of how to enter, change, and leave orbits.

3 years ago | Likes 43 Dislikes 0

Honestly, so is Outer Wilds

3 years ago | Likes 1 Dislikes 0

Also, I did my first orbital docking shortly before Interstellar came out, and that whole sequence had me squeezing dents into my imax chair

3 years ago | Likes 16 Dislikes 0

Scott Manley showed me how to dock spacecraft without using the docking indicator/mode, and it greatly enhanced my game.

3 years ago | Likes 7 Dislikes 0

No first you have to build a ship and realize at the unfortunate last moment that you lined up your rocket to go off with your parachute

3 years ago | Likes 152 Dislikes 0

v

3 years ago | Likes 2 Dislikes 0

3 years ago | Likes 2 Dislikes 0

Check yo staging!

3 years ago | Likes 5 Dislikes 0

CHECK YO STAGIN

3 years ago | Likes 2 Dislikes 0

I love how there's 115 (currently) upvotes to this. We've ALL done it.

3 years ago | Likes 2 Dislikes 0

Weird...I usually link the parachutes with jettisoning something important that should not have been jettisoned.

3 years ago | Likes 18 Dislikes 0

3 years ago | Likes 45 Dislikes 0

perfect image

3 years ago | Likes 4 Dislikes 1

every gosh darned fuckin time

3 years ago | Likes 4 Dislikes 0

Yes

3 years ago | Likes 3 Dislikes 0

No first you build a ship and don't realize till reentry you didn't put any parachutes on.

3 years ago | Likes 11 Dislikes 0

NOOOO JEB!!

3 years ago | Likes 2 Dislikes 0

No, first you explode several times.

3 years ago | Likes 70 Dislikes 1

Yeah, I had to learn not to give the rockets so much fuel.

3 years ago | Likes 6 Dislikes 0

Even after youve mastered all that you'll still realize you don't have enough delta v to get Jeb back from the fucking Mün.

3 years ago | Likes 1 Dislikes 0

Pfffft only if you're a fucking genius. First you explode so many times you rage quite quite a few times and come back months late to restrt

3 years ago | Likes 8 Dislikes 0

Rockets are relatively easy. I never managed to make any plane take off.

3 years ago | Likes 5 Dislikes 0

I'm the same, can get to land on Eloo but can't get a plane to land without a death toll, poor Jeb has died too often

3 years ago | Likes 5 Dislikes 0

Orbit: falling, but moving fast enough to dodge the ground.

3 years ago | Likes 855 Dislikes 1

Falling isn’t flying. Floating isn’t infinite.

3 years ago | Likes 1 Dislikes 0

Its fun to experience this first person in Outer Wilds.

3 years ago | Likes 2 Dislikes 0

"Falling" and "the ground" don't make much sense to an observer already in space.

3 years ago | Likes 3 Dislikes 1

Thats true. But from an observer on earth it does. Mmm relativity.

3 years ago | Likes 3 Dislikes 1

You must be fun at parties

3 years ago | Likes 2 Dislikes 0

The trick is to get distracted the moment you would hit the ground

3 years ago | Likes 12 Dislikes 0

Flying is notoriously difficult, which is why the majority of people fail and become disillusioned with this particular sport.

3 years ago | Likes 6 Dislikes 0

Which is why there's freefall (no gravity). There's actually gravity where the ship is, it's just in freefall.

3 years ago | Likes 2 Dislikes 0

This comment rules

3 years ago | Likes 4 Dislikes 0

Falling with style!

3 years ago | Likes 5 Dislikes 0

flying: the art of throwing yourself at the ground - and missing

3 years ago | Likes 224 Dislikes 6

One problem is that you have to miss the ground accidentally. It's no good deliberately intending to miss the ground because you won't.

3 years ago | Likes 15 Dislikes 0

Maybe you could hire someone to distract you at the vital moment?

3 years ago | Likes 8 Dislikes 0

I downvoted...but I hope you understand why

3 years ago | Likes 2 Dislikes 0

did you....miss the downvote button or something?

3 years ago | Likes 3 Dislikes 2

Heh, nope. At the time, I got the count right to 42. Switched to an upvote, since I've lost that race

3 years ago | Likes 5 Dislikes 0

3 years ago | Likes 3 Dislikes 2

It restores my faith in this site that this was the first subcomment

3 years ago | Likes 27 Dislikes 0

Running, when you try to walk twice at the same time

3 years ago | Likes 6 Dislikes 0

There it is.

3 years ago | Likes 5 Dislikes 0

Oh no, not again...

3 years ago | Likes 64 Dislikes 0

now if you knew WHY the bowl of Petunias thought that you would know a lot more about the nature of the universe

3 years ago | Likes 32 Dislikes 2

We do? It's Agrajag being killed by Arthur Dent yet again?

3 years ago | Likes 14 Dislikes 0

*or Arthur merely being involved in his death in some way

3 years ago | Likes 7 Dislikes 2

back home in his Cathedral of Hate

3 years ago | Likes 11 Dislikes 2

This isn't flying, it's falling with style

3 years ago | Likes 5 Dislikes 0

Doesn't different theories of gravity point out that you're actually going in a straight line through warped space?

3 years ago | Likes 40 Dislikes 1

Yoooooooooo

3 years ago | Likes 18 Dislikes 0

General Relativity likes this comment

3 years ago | Likes 4 Dislikes 0

Yea, thats basicly what gravity is. I think of it like this: a blanket pulled taught on stairs, a ball rolling down the blanket is acting...

3 years ago | Likes 1 Dislikes 2

Under gravity. But if you push the ball slightly side ways as it rolls, it moves at an angle. Just imagine that in 3d and you get orbits...

3 years ago | Likes 1 Dislikes 2

Basicly gravity acting in X direction, and another force pushing in the Y direction, just more 3d...and spherical.

3 years ago | Likes 1 Dislikes 2

Here’s another theory. You’re standing still and everything or it around you once you decide you wanna go around something.

3 years ago | Likes 2 Dislikes 0

....so how does momentum work?

3 years ago | Likes 1 Dislikes 0

Yeah, like if you're walking in a straight line on a ball, your path is curved. You just have to extrapolate up a dimension.

3 years ago | Likes 21 Dislikes 0

Everywhere you have ever walked in a straight line has been on a ball (unless you're a flat-earther :P).

3 years ago | Likes 5 Dislikes 0

How about inside a floor of a building.

3 years ago | Likes 1 Dislikes 0

Flat Earthers somehow believe all the other planets are round but earth is flat...

3 years ago | Likes 2 Dislikes 0

Soooo techingally you’ve never walked a straight line in your existence

3 years ago | Likes 1 Dislikes 0

my hyper gay sister will love this factoid

3 years ago | Likes 2 Dislikes 0