This video demonstrates the fundamental principles of orbital mechanics through a simulated rocket launch from Earth, showing how rockets achieve orbit by combining multiple engine burns (first stage provides 6 km/s delta-V, second stage adds 5 km/s, and upper stage provides 9,000 delta-V), performing gravity turns to efficiently change trajectory, and executing precise de-orbit burns to return to the surface, illustrating that orbital insertion requires sufficient velocity to counteract Earth's gravitational pull while maintaining a stable trajectory.
Deep Dive
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Deep Dive
Kitten Space Agency | Grand Tour | Earth
Added:And welcome back.
This is what we built yesterday.
Our grand tour Mark 1.
And today we're going to do our first stage of our grand tour.
And this is going to be Earth. So we are going to launch from Earth. We're going to land back on Earth.
Oh, that's going to be interesting.
Let me properly update everything here.
And right now I'm the only one streaming on Twitch. Kitten Space Agency. That's interesting.
There's not many people streaming PSA.
Go.
Oh, a bit annoying that you can only do these changes that I always have to make on the streams after you started the stream.
But hey, that's how it is.
Why do I not show up on the KSA stream category yet?
Let's wait for that. Oh, by accident I hadn't switched my sound to my headphones, but now it's okay.
You get in game sound, do you? Yes.
Perfect.
Good.
Still nothing.
Ah, no. I'm there. Okay, that worked.
So, Earth, it's going to be Earth.
Um, let's get over our rocket first.
The numbers are off. What's happening?
I think I know.
And I really do hope we fixed our crashes from yesterday as well. Somehow whenever I load this rocket, this tank over here has 100% fuel in it, which is way too much and messes up with all the stats.
So yeah, and maybe do a bit more, right? Maybe seems reasonable.
Also, we don't have this layout thingy yet. That's coming up in another in the next build, I guess. So, let's have a look.
Basically, we have a first stage that will ignite the outer six engines and burn these tanks.
fueling these tanks. That gives us six kilometers of delta V. Then we ditch those via the decouplers and ignite the center one which gives us another 5 km.
That is way like easily enough to get us into a good maybe even eccentrical Earth orbit.
And then last, we have this stage up here with 9,000 delta V. It acts as a transfer stage and landing stage or wherever we go. So, I guess we're good to go.
And we do that by going to the debug physics menu and selecting a nice Is this Ventenberg Air Force Base launch complex 4 or which one is this? Anyway, this one is uh Cap Canal landing complex 39A. So, we I guess go with this one. One thing I and we are going to find this out today.
We're going to go here.
And I want to read this nav ball properly here. But how do we do that when we launch?
Let's just let's just do it.
Go to service, right?
And then we have over north uh east.
I expect that is down here.
Let's see if that is true.
Where are we going?
Seems like we're going south.
Apparently, this is south. But where is north?
So if you are here and then we just go over here is that even more wrong.
Let's go to the start again.
This time let's go this way.
This seems correct.
Okay, so we learned this. Now the next question is yes.
So, let's go back and enable uh plume trits.
Good. Oh my god.
Uh, I guess we have to restart the game to make them go away. Look, we have the plume trades from the previous starts.
The funny thing is you can now look where our launches went. One canceled up here and the other one was the correct one canceled up here. That's super fun to look at.
Anyway, let's restart the game.
Okay, you go.
Go to the vehicle editor.
Load our aircraft.
Fix the tank. Loading.
We did 5% right.
And exit the editor.
Teleport to the launch site. We go.
So, let's do a small camera drive around to see.
Is it coming out on Steam? Welcome, Kaparan. No, it's not going to be on Steam.
Dean is not a big fan of Steam. And no, it won't be on Steam.
You can get it for free on ksa.awu.com.
Look at that. So, this is going to be a nice angle, I guess, for launch. Or maybe looking that way. No, I guess looking this way is perfect.
Like this.
As you can see, there is not really a lounge complex yet. We just lounging in the woods. Uh let me quickly post to the chat the link of where you can get it. Good.
So I guess we are ready to launch right. We just go to an orbit and we go left after some time.
Huh? In Let's do it like this. Or maybe move away with the camera a bit like this.
Okay. In three, two, one, ignition.
I'm really cool.
And let's start our gravity turn after we pass the clouds.
There we go. That also looks really, really cool.
and about that.
Is that correct? Yes. All right.
Nice plumes, right? Those look really cool. We have like six plumes.
Weekly check data 24 km.
I guess we can just set to a hat. Uh maybe not. forward.
Yes, that's correct.
Is this the newest version?
It is the newest version, but not the version I have made. I'm not one of the devs.
Just a tiny content creator enjoying the game.
Look at the plumes. The engine plumes.
That looks really, really cool.
What is our apoapsis? 53 km. Let's continue on this trajectory.
70 kilometers and we keep going.
What is the best angle for I guess this one or detaching the boosters, but we still have 2k delta v left.
I mean around here I would disable the plumes because they don't really look nice anymore.
I guess because we are so fast or something. Not sure what the exact reason is.
20 kilometers we are going to do.
I mean let's clear this stage of delta V. That's how far we can go.
And then we ignite the next stage.
There we go.
And no, we can coast. I guess it's fine.
Let's just leave it at that.
Because we are at one 163 kilometers. That's fine.
Uhhuh. That looks good as well.
We are bit inclined here. But that's also fine.
I guess it's to real. Welcome. Meow. Yeah, we can uh EVA some kittens later.
In the currents build, there are uh an infinite amount of kittens that you can EVA. That's fun.
But let's coast towards our we moved way past our exhaust plumes here.
So once we get closer to our apoapsis, we can then go orbit ahead.
We stick to forward.
Let's time warp bit and then we can ignite the engine like this. Maybe the boosters they are still where are they? There all six.
So, now let's let's have that one booster in our field of view here and then we go.
Bye-bye booster.
Yeah, I mean up here in space the plumes look not so nice, but I guess they can fix that sooner or later.
So, what about our apoapsis? Oh my god, we already passed it. We need to bring it back in front of us.
Otherwise, we're going to have a problem.
You can see by the way all the booster trajectories here and they will all impact there. Where is our apoapsis? We need the apoapsis back. Come on.
There it is.
Okay. Okay. Okay. Okay. It's enough.
It's enough. It's enough. It's enough.
All right. That's good.
We have 4 kilometers to burn. That's nice. Okay, let's go like this.
Should be fine.
We should be able to make it. We are already have a speed of 6 kilometers.
Not push our apoapsis too far ahead.
We're getting there.
What is the speed?
Six.
Nine.
Yeah. Yeah. We're getting close. We're getting close.
11.6. We're almost there.
There we are.
160 kilometers.
That's fine for me. It still says we are inside the atmosphere.
Why?
Let's raise our apoapsis a bit more.
Go to our apoapsis.
I'm missing a bit the time to apoapsis thingy. Anyway, okay, here we are.
Orbit ahead.
We forgot to put lights on the craft, but yeah, let's just do stuff on the daylight side of things.
Would be fine. So, now we should bring this part up.
Yeah. Okay. 200 kilometer orbit. All good.
Let's save this as Grand or Greek GT Earth.
No low Earth orbit saved.
Good. So, we want to land somewhere.
Maybe we do some nice camera shots first.
Uh we would still have two kilometers of Delta V left. We won't need those. So let's Okay, there is a sunrise. I guess let's stage this wear part here in three, two, one. Let's go.
Look at that.
Also some nice particles around this location where we separated.
And here we are, our new craft.
Let's do some round trips around Earth.
Really nice. And we come to night time.
We don't have city lights yet.
And once we see a nice sunrise over there, we will plan our de orbit maneuver.
So, let's refill.
Oh. Uh, our RCS thing is Oh, god damn it.
It put uh Let's fix that.
Let's fix that in the vehicle thingy again.
It always goes to 100%. I hate that.
Now we should be good.
Yes.
Where do we land? That's the we question. Now where are we? We are coming up right here. So we could land in what is what is it?
Is it Africa? No. What is that?
Australia.
It's really hard because north is not really north on this thing, is it?
But this seems to be the only option we have right now. So let's go over here. Create a maneuver node.
Go retrograde over here and a bit anti-normal.
No, that's wrong.
a bit.
Oh, anti-normal was correct after all over here.
We land in whatever that is in the middle of it.
That's good.
So that should now be able to be performed in this autopilot thingy here if we set it to auto.
And now we should be able to enjoy the view.
Just sit here and enjoy the view.
Okay, that was fast.
Immediately upon reaching the target orientation, it fired the engine.
Do we have Okay, up here we don't have volumetric plumes on the engine. That's okay. That's nice.
There we go.
I didn't look at how long the burn would take.
Ah, there we go. And I showed the UI in the least beneficial spot.
Uh, can I delete the burn from here?
Yes, we should now go down over here.
That's good. So, we want surface back.
What we can also do is extend the landing legs.
There we go.
They are extended.
Now all that's left is going down.
Let's time warp a bit.
Okay, the land mass is approaching below.
We are going to land somewhere in the middle.
We can first make use of arrow breaking and then only on the last bits we use.
Our engine.
Okay, let's go to real time.
We need to get rid of some fuel of some beat burst.
800 m 600 400 300 Yeah, I mean the air is going to do its part as well.
We can go with as little as 1.1 maybe. Claire Burr, welcome and thanks for the follow.
Hey, welcome. Welcome. How is your day so far?
5 kilometers.
We're starting to lose speed due to the air. Can help it a bit, of course.
100 m a second.
70 50 20 500 m high 50 200 m high 30 Oh, that's not looking so bad.
The tree the trees are really taxing.
And did we did we we are still standing.
There's a lot of smoke around here from our descent.
can clearly see how we came down.
And there's lots of lots of trees.
Really tanking the FPS.
And I guess we made it.
Let's disable the volumetric looms because we can't really see anything.
There it is. We made it.
Ha.
So, this is Earth.
Okay, let's spend some time reading your chat messages. I'm sorry. I was of course focused on the landing. I reported my scammer.
Yeah, thank you. They should get banned.
They reappear every time. It's u only slightly annoying. It's also they include some AI bot that reacts to what I'm saying on stream.
It's crazy. But yeah, totally spammers.
Thanks for reporting them. This is looking amazing. Been following for a while. Wow. Trees standing. Yes, a lot of smoke. Yes, indeed. Dean is really knocking out of the park. All of them.
There we go. Looks good. Yeah. Yes. Uh they are really doing an amazing job. I mean, with all the trees recently added, you can see the FPS is really abysmal.
If we disable the trees, um, I guess it is ground clutter.
Yes, you can see FPS go up and it's much much smoother.
But yeah, you either have the trees and it lags a bit or let's do it like this. That's so fun.
Um, let's just zoom in like this. What is this thing up there?
Some stage that we left up there. It's like a satellite or something.
So, as you can see, you can like uninterruptedly just zoom out and zoom in.
through all the level of details.
That's amazing. Always amazes me. Let's see what this thing up there in the sky was. This What is this?
There's something.
What is it?
Uh, orbit rocket 7.
It's our main stage.
The second stage, I guess. Still floating up there, reflecting the sunlight, I guess.
Interesting.
So, yeah, we have that or we have the same thing again with around clutter. Uh there is no setting yet I guess to make it more or less.
That's how it looks with the trees.
Look at that. We made it and we landed and we are still standing. Yesterday that was a bit of a yeah an issue with the landings that we tested yesterday, but today it seems to be working also.
Awesome. I half expected them to fall down like when you drop hot plants and eros that that would be a nice effect. True.
There's a bit of flickering when there are clouds behind the trees.
But yeah, guess that was it. Short stream today.
We made our first uh step, our first target of the Grand Tour.
Um, they look like Daisy Tri. I didn't play Daisy, but if you say so, to believe you.
Um, yeah. So, we made our first step on the Grand Tour, which was Earth. So in the next stream we are going to go to the moon. So we go we lounge from earth and we will do a moon landing.
Maybe this evening I guess could be a good time or even in the afternoon but I guess more indeed.
So hey can I ask are you involved with the a team not involved but connected let's say so uh recognized they call it community veterans content creators and stuff right we have a a private channel where we can where we stay in contact with them so yeah but I'm not actively like developing or something that not but I can give feedback to them and yeah they are very eager to listen to to feedback and stuff.
Unemployed Joker welcome. Yeah, you joined just when we were done.
Looks good. Yes, I agree.
Before ending the stream, we can do one more thing. What do you want to see?
Um, we could I could show you one of my favorite new additions and that is the teleport tool.
Uh, ah, not right now because I'm in the earth only system cuz that's what I wanted to record and stream this time. But still on Earth I can show you what this is about.
So basically you have this new tool now.
You can say teleport to which planet and then you get a map.
So this was Africa after all. Oh maybe not. You're somewhere down here. Right.
So you can basically click anywhere on the map and you just teleport there and your rocket flips over anywhere wherever you want and you're immediately there. I don't know.
Germany is on the night side. Uh let's teleport a fair bit or time warp.
Of course, I want to see something.
What?
Oh my god. Climate warming is real.
Germany is no more.
Almost underwater. What's happening?
Okay, we made it.
Uh, yeah. I mean, North America is now on the night side. It's still a time warp. Will we see something?
Go uh Canada up here also on the night side. Let's go here.
South America. You can basically teleport anywhere you want and you're just there. And we go to a place where it's icy.
Is it always night here? Looks like it.
God damn it. Okay, other direction. Here we go.
Somewhere in Antarctica.
It's amazing. You can just simply teleport anywhere you want. And if you are have loaded the the whole system, not only Earth, you can teleport to Moon, to Mars, wherever you want. It's instant. You're just there in a split second. That's totally crazy to me.
I Yeah, I will showcase that when we do a stream where we have the whole system loaded. This time I only loaded Earth.
So yeah, basically that was it.
That was the stream. Let's capture some nice maybe like with the free cam. Oh man, too fast. Cam speed 10 m a second.
Maybe like this. That could be a nice camera angle.
Maybe with some time warping.
Oh, why does the camera move with it?
If I remember correctly, there was a setting for that.
Um, was it follow terrain free camera again here and then time warp? Oh.
Hm.
By the way, IVA view with real rate tracing, right? Also insane. What's the RAM cost for loading just Earth versus the whole system? Uh, not absolutely sure because I think it uh gets turned down a bit if you load the whole system. I mean, I have a GPU with 16 gig of VRAM. I can load the whole system without turning down details too much.
I'm a bit annoyed right now. Why the three camera?
How do I How do I make it that it stays static?
Huh?
Yeah, maybe we just do a time warp like this cuz now it stays static.
So, this is a nice ending scene.
All right. We're never going to get a night on in on Antarctica here. That's crazy.
Oh, clouds.
Crazy. Crazy.
This looks really cool.
This looks really nice.
Let's slow down a bit so that we can enjoy the clouds more.
Come on. Now we need clouds. I slowed down time board.
Uh clouds are approaching. Looks like a storm coming up.
This is really cool.
And now maybe we can even do the free camera to the side a bit. It's It's moving.
So nice.
But yeah, kind of looks cool as well.
Good. That's a nice ending shot. So, I said again, uh, next stream is going to be a moon landing.
So, if you don't want to miss that, feel free to subscribe.
Um, of course, an edited version of this stream is ending up on YouTube soon.
Don't worry.
And yeah, thanks for joining.
I hope you enjoyed it as much as I did.
and see you in the next stream. Bye-bye, guys. Bye-bye.
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