Space Engineers

Space Engineers

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Gladion Jul 31, 2015 @ 11:08pm
can we manipulate planet gravity to make an orbit?
well we just imagine if planet have gravity and use it for orbit. will be good for saving some fuel.
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Showing 1-7 of 7 comments
Gladion Jul 31, 2015 @ 11:08pm 
(if planet gravity reach outside atmosphere tho)
Lord_VIO Jul 31, 2015 @ 11:16pm 
Only with Sam's Cola, Just sayin. And maybe a Hot Dog.
Greyson XMG Aug 1, 2015 @ 12:14am 
With a infinite speed mod, it is very likley you could do it... BUT

How easy is it going to be to dock / board a ship that is moving at 2000 and up mps.

I hope they DO make is possible, but with things as glitchy as they are now, no way.
Namdoolb Aug 1, 2015 @ 2:37am 
By my rough estimation, (and the aid of some web based calculation tools) you're probably going to want to hit speeds in the region of 8,000 m/s to be able to orbit at 100km (assuming 1g).
(based on calculations for earth)

The actual speed required in-game may be considerably less; because the planets are smaller and the gravity falls off (by necessity) a lot quicker than it should as you move away from the planet surface.

Still, you're probably going to require speeds in excess of (as a complete guess) 1000 m/s to achieve orbit in-game. And you might need a math degree to figure out the correct orbital distance & corresponding velocity.
Last edited by Namdoolb; Aug 1, 2015 @ 2:38am
rebellionmarch Aug 1, 2015 @ 3:31am 
Originally posted by UESCNamdoolb=FILTH=:
By my rough estimation, (and the aid of some web based calculation tools) you're probably going to want to hit speeds in the region of 8,000 m/s to be able to orbit at 100km (assuming 1g).
(based on calculations for earth)

The actual speed required in-game may be considerably less; because the planets are smaller and the gravity falls off (by necessity) a lot quicker than it should as you move away from the planet surface.

Still, you're probably going to require speeds in excess of (as a complete guess) 1000 m/s to achieve orbit in-game. And you might need a math degree to figure out the correct orbital distance & corresponding velocity.
or instead of a degree in math you could use this wonderful tool called google to provide you with all the info and resources to make that calculation easy as pie.
AlexMBrennan Aug 1, 2015 @ 3:31am 
How easy is it going to be to dock / board a ship that is moving at 2000 and up mps.
How hard is it to hit a hole the size of a regular door that's travelling at 1000mph? Sounds pretty hard, right? Yet you probably do just that numerous times every day - this is possible because you are travelling at the same 1000mph the doorframe is travelling at.

And you might need a math degree to figure out the correct orbital distance & corresponding velocity.
Really? https://en.wikipedia.org/wiki/Escape_velocity isn't that hard
Last edited by AlexMBrennan; Aug 1, 2015 @ 3:35am
Namdoolb Aug 1, 2015 @ 4:13am 
Well, let's establish exactly what you are going to need...

You're going to need to start by choosing a point inside the gravity well of the planet.
Then you're going to need an accurate measurement of the gravitational force at that point. (difficult because the game only displays gravity to 1 significant figure (afaik).)
Then you're going to need an accurate distance measurement to the center of the planetary body.

Then you feed that information into your web based calculator and it will spit out the requisite velocity.

Then all you need to do is hit that exact speed at a vector exactly perpendicular to the planet at that exact distance.

Because the gravity accumulation/falloff due to distance looks like it will be more acute than in real life (necessary because you don't want a 0.5g planet to have gravity that extends out several thousand km) you will have to be extra precise. Even a small error may result in a fairly rapid degeneration of the orbit.

Possible? Theoretically.
Easy? No.
Worth the trouble? Almost definitely not.
Last edited by Namdoolb; Aug 1, 2015 @ 4:14am
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Date Posted: Jul 31, 2015 @ 11:08pm
Posts: 7