Launchpad on station

Horus Lupercal

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#2
Hello guys, I have one question: Can I place launchpad on station builded in LEO?
Erm, No. Think about it, please.

Considering the space station would be moving at several times the speed of sound and the launchpad will be static in space, I'd say that will be quite an interesting way of destroying your station.
 

Horus Lupercal

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#5
Sorry I wrong write this. Not LEO but UHSO
Doesn't matter. If the station is not on the ground, it'll be moving. The launchpad will be static, regardless of where you put it.
If you apply a moving object to a static object, you get what experts call 'a crash'.
 

AstronautAdam

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#6
Doesn't matter. If the station is not on the ground, it'll be moving. The launchpad will be static, regardless of where you put it.
If you apply a moving object to a static object, you get what experts call 'a crash'.
But all planets are moving!!!
 

Horus Lupercal

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#7
But all planets are moving!!!
There we have it boys and girls, the limits of your knowledge of how physics works.

Of course the planets are moving. So is the sun. And the milky way.

Let's break this down into real simple terms.
To a static observer stood on the surface of the planet, the planet is not moving. Everything else not on the surface is moving around him.
So it stands to reason that a planet can be considered a static reference point for objects inside of its area of influence.
Now, the launch pad is a static object in relation to the onject is it is spawned on, and can be considered static and immobile from any reference point on the SOI, regardless if the body is moving in relation to the sun.
A space station in orbit is moving, not just relative to the sun, moon and other planets, but also to the body it is orbiting. So it can be considered a moving object, regardless of your frame of reference, but definitely to a static observer (i.e., the launchpad) sat on the surface of the sun.

Now because of this, you may move the launchpad to wherever in the solar system you wish, even to any altitude so I'm told. But you can not give it a speed to move at, so it will remain static (from the perspective of its parent body) at that altitude.
And your space station will crash into it, because it is moving, and the launchpad is not.

Regardless of the fact the planets are moving or not. Because that is how physics works. And no amount of exclamation marks will change that.

And even if for some mind blowing reason you want to take the planets movement into account, it will still crash.
Why?
Because for example, Earth is moving at around 5500m/s around the sun.
A space station in orbit will be moving roughly 1600m/s faster or slower depending on which way it is orbiting.
That is a speed overlap of around 4km/s which will still cause a crash.

And before you go 'bUT iM uSIng UHSO', the only differences is the speeds involved. The facts and physics are still the same. You will have a static platform out beyond Plutos orbit and a moving space station out beyond plutos orbit and shortly you will have a static platform, a loud bang and lots of pieces of space station out beyond plutos orbit.

Is that clear enough...?
 

Earl

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#8
I'll make it even easier to understand.
Launchpads need to be stationary relative to whatever planet they're on. Stations need to be moving relative to whatever planet they're on (orbiting). You can't have a station and launch pad together because one is moving and the other isn't.
 

Blazer Ayanami

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#9
Or to make it EVEN simpler for Adam:

Yes planets are moving, and the launchpad is moving WITH the planet, not AROUND the planet, like the space station.
 

JSP

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#10
The pad is a Fixed to one location

It doesn't move around a planet
It moves with the planet in a fixed point
 

AstronautAdam

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#13
I got that all guys. Thanks.

But I have one idea:
1. Create planet orbiting around Sun
2. Set its diameter to 5m
3. Create Core of station with place in center where will go planet. Core will have 4 dock ports LD, LT, RD, RT
4. "Dock" to planet- core of station will be openable from one side
5. Close "door" ( landing legs)
6. Attach 4 side parts to Core of Station
7. Attach 1 "hole filling" part with flat top (for launchpad)
8. On opposite side of hole-filler will be gap (for docking in station)
9. Measuare height of hole-filler part
10. Set launchpad to its coordinates
11. Height of launchpad will be same as height on top of hole-filler
12. Completed

So this will work???
 

Horus Lupercal

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#14
I got that all guys. Thanks.

But I have one idea:
1. Create planet orbiting around Sun
2. Set its diameter to 5m
3. Create Core of station with place in center where will go planet. Core will have 4 dock ports LD, LT, RD, RT
4. "Dock" to planet- core of station will be openable from one side
5. Close "door" ( landing legs)
6. Attach 4 side parts to Core of Station
7. Attach 1 "hole filling" part with flat top (for launchpad)
8. On opposite side of hole-filler will be gap (for docking in station)
9. Measuare height of hole-filler part
10. Set launchpad to its coordinates
11. Height of launchpad will be same as height on top of hole-filler
12. Completed

So this will work???

Well you can't have got it, because you're still pursuing this ridiculous idea.

No.

For the 3rd time, it will not work.

Because the station will still be orbiting a stationary launchpad.
The station will still be moving and the launchpad will still not be.

it doesn't matter how small the planet is.

You can't dock to the planet, because the thing you dock to will move, or you'll crash into the floor because you've stopped moving.
 

AstronautAdam

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#15
Well you can't have got it, because you're still pursuing this ridiculous idea.

No.

For the 3rd time, it will not work.

Because the station will still be orbiting a stationary launchpad.
The station will still be moving and the launchpad will still not be.

it doesn't matter how small the planet is.

You can't dock to the planet, because the thing you dock to will move, or you'll crash into the floor because you've stopped moving.
No no no. Himle Herrrrr....... Station core will be landed on planet but planet will be as small stone in clised hand. And after this will be all on it
 

Altaïr

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#17
I got that all guys. Thanks.

But I have one idea:
1. Create planet orbiting around Sun
2. Set its diameter to 5m
3. Create Core of station with place in center where will go planet. Core will have 4 dock ports LD, LT, RD, RT
4. "Dock" to planet- core of station will be openable from one side
5. Close "door" ( landing legs)
6. Attach 4 side parts to Core of Station
7. Attach 1 "hole filling" part with flat top (for launchpad)
8. On opposite side of hole-filler will be gap (for docking in station)
9. Measuare height of hole-filler part
10. Set launchpad to its coordinates
11. Height of launchpad will be same as height on top of hole-filler
12. Completed

So this will work???
That could work, but you'll have to be careful when building the station around your small body: if the center of mass of your station appears to be in the body itself, the game will consider it crashed and will automatically destroy it.

Also, your mini-body must have a minimal mass, because you will need a sphere of influence.

That's all I can think for now, but you may expect some surprises.

Also, I would strongly recommend make this object orbit Earth instead of the Sun: achieving a rendez-vous in Sun orbit is very tedious, and you'll have a hard time building a whole station there.