Space Engineers

Space Engineers

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flac May 14, 2021 @ 8:53pm
Slow Hydrogen Fueling
I'm playing this game for some reason. Just built my first large ship, its pretty chonkin.
But the hydrogen fueling process is taking a VERY long time, and I need advice. I'm trying to get off this planet and build in space. Done a couple of trips with my small grid miner to an ice lake and I'm at 2% hydrogen... Do I need to make a bigger miner? Thanks.
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Showing 1-15 of 19 comments
flac May 14, 2021 @ 8:55pm 
For context I'm trying to fill 117ML on this large ship.
Buzzard May 14, 2021 @ 9:08pm 
O2 generators produce gas at a trickle. Thrusters, on the other hand, go through gas like older toilets flushing. You're going to need either more time for your existing O2 gens to work, or ...more O2 gens. Of course, for that volume of gas, you're also going to want more ice to feed those gens.

NOTE: You'll want to keep most of those O2 gens on a base somewhere, not on your ship, as trying to haul enough ice to feed all those gens, requires more thrusters, which takes more production... Basically, you end up with a ship made of thrusters and O2 gens, and barely enough room for a cockpit. It can be done, but it's not a pretty thing, in terms of performance OR one's aesthetic sense.

Also, for the trip UP, you'll want to manually control things, as running at full-burn will get you there, and basically waste a whole lotta gas. Since you'll be going straight up (easiest way off the planet), turn off the inertial dampeners with 'Z' and hit the throttle until you're at top speed, then let off. Basically, you're wanting to keep the speed up, but not waste fuel by pushing against the speed limiter. You also don't want to STOP, which is why the inertial dampening gets shut off. Burn, coast, burn, coast, etc. until you escape gravity, THEN turn back on the dampeners and look around for where your first space base is going to be.

Oh, and once you're in space, you can run into hostile NPC craft. Space Pirates (SPRT) will gleefully shoot up your stuff and send drones to hunt you down and... shoot up your stuff. Having a few turrets on your ship is a REALLY GOOD IDEA. When you get a base built, again, put up some turrets pretty early in construction, as you'll get visited sooner or later.
Last edited by Buzzard; May 14, 2021 @ 9:17pm
Ilshavoh May 14, 2021 @ 9:09pm 
Perchance, are you using a Hydrogen Engine, which could be eating your hydrogen as you produce it?

Is your problem the ice runs out, or the rate of hydrogen fill sucks, while you're full of ice?
flac May 14, 2021 @ 9:18pm 
Originally posted by Digibunny:
Perchance, are you using a Hydrogen Engine, which could be eating your hydrogen as you produce it?

Is your problem the ice runs out, or the rate of hydrogen fill sucks, while you're full of ice?

Not using a hydrogen engine. I can have thousands of ice but I will only get 0.1% every few minutes.



Originally posted by Buzzard:
O2 generators produce gas at a trickle. Thrusters, on the other hand, go through gas like older toilets flushing. You're going to need either more time for your existing O2 gens to work, or ...more O2 gens. Of course, for that volume of gas, you're also going to want more ice to feed those gens.

NOTE: You'll want to keep most of those O2 gens on a base somewhere, not on your ship, as trying to haul enough ice to feed all those gens, requires more thrusters, which takes more production... Basically, you end up with a ship made of thrusters and O2 gens, and barely enough room for a cockpit. It can be done, but it's not a pretty thing, in terms of performance OR one's aesthetic sense

The only base I have is really just temporary, just the essentials on some scaffolding. This is because I hate this planet and want to get to space ASAP. Also noteworthy that my ship is no longer attached to my base. I have 3 hydrogen generators on board the ship. I have room left in the ship, however I am draining my power quite fast, and only have a couple hundred Uranium if I use too much.

Are you suggesting to get more gens, and a bigger miner?
Thanks.
Ilshavoh May 14, 2021 @ 9:20pm 
Definitely sounds like you need more O2/H2 Gens to actually process your ice then, and to turn your H2 tanks to Stockpile, so they aren't leaking any out to engines or anything.

FWIW

A H2 Engine needs at least 2 generators to not stall, and be able to fill a H2 Tank while in space on a big ship.

flac May 14, 2021 @ 9:51pm 
Update:
I now have 8 ♥♥♥♥♥♥♥ hydrogen generators, going to work on a bigger miner and hope I have enough power for all this lul. Thanks boys.
Buzzard May 15, 2021 @ 12:24am 
Okay, for power, especially base-side, you can run a small forest of windmills to keep the O2 gens running, as well as keeping your launch vehicle's batteries hot.
As for the fill rate on your H2 production, seriously, look at the ridiculous volume that is. You're quoting 117 MILLION Liters of gas, which isn't exactly "tiny". Even after a the H2 buffs that Keen did over the years, that's still a somewhat epic volume of gas for a simple trip off-planet.

One big advantage that your epic fuel storage will have: Mass reduction. Current game physics takes into account inventory mass for gravity/thrust calculations. H2 and O2 gasses in tanks are just numbers on a readout, and do NOT get counted as mass. Your small lake's worth of ice, rendered down into H2 gas in a tank, is effectively massless. (which just slightly violates real-world physics)
Still, on board ship, you'll want just enough O2 gens to sorta replenish things over time. Hauling enough ice and O2 gens to keep up with demand full-time... is freaking expensive. In space, you can turn off the inertial dampeners and coast for a long time without needing thrusters. You'll also want to group all your thrusters to be able to turn them on/off quickly. Idle ion/atmo thrusters use just a little electricity when on. Idle H2 thrusters don't use power, but that 'pilot light' will slowly burn up your fuel reserves, cutting your effective range.
flac May 15, 2021 @ 1:29am 
Originally posted by Buzzard:
Okay, for power, especially base-side, you can run a small forest of windmills to keep the O2 gens running, as well as keeping your launch vehicle's batteries hot.
As for the fill rate on your H2 production, seriously, look at the ridiculous volume that is. You're quoting 117 MILLION Liters of gas, which isn't exactly "tiny". Even after a the H2 buffs that Keen did over the years, that's still a somewhat epic volume of gas for a simple trip off-planet.

One big advantage that your epic fuel storage will have: Mass reduction. Current game physics takes into account inventory mass for gravity/thrust calculations. H2 and O2 gasses in tanks are just numbers on a readout, and do NOT get counted as mass. Your small lake's worth of ice, rendered down into H2 gas in a tank, is effectively massless. (which just slightly violates real-world physics)
Still, on board ship, you'll want just enough O2 gens to sorta replenish things over time. Hauling enough ice and O2 gens to keep up with demand full-time... is freaking expensive. In space, you can turn off the inertial dampeners and coast for a long time without needing thrusters. You'll also want to group all your thrusters to be able to turn them on/off quickly. Idle ion/atmo thrusters use just a little electricity when on. Idle H2 thrusters don't use power, but that 'pilot light' will slowly burn up your fuel reserves, cutting your effective range.

Yeah I'm aware that I'm overdoing it a bit, but its not just a trip off-planet, its going to be a temporary base until I find somewhere in space to build, its equipped with everything I need, a miner, refiner/assemb o2/h2 gen, turrets, reactor, airtight+airlock, etc. I plan to rely on it for a while.
I am also thinking about making a skylift with atmospherics to get my ship as high as possible before burning any hydrogen.

Peace of mind is important for me, so I really want to avoid being under prepared. What would you say is a reasonable fuel amount? Worst comes to worst I will be able to use my miner to get Ice while I'm up there.
Thanks!
Buzzard May 15, 2021 @ 2:00am 
Ahh, someone who likes being OVER-prepared, like I do. Your massive fuel reserves won't really hurt you while in space, as there's *always* something that can be done with the gas, and it's the best thruster for a given cubic, even if it's got an expensive logistics train behind it.

Refuelling gets really cheap if you find one of the rare ice asteroids. (made entirely of ice instead of stone) Alternatively, a trip to the nearest moon is a cheap enough jaunt. .25g for standard moons, and Earthlike's moon doesn't have an atmosphere to foul ion thrusters. (Plus, you can get platinum there easily enough)

As for your atmo thrusters for an extra boost, there's nothing that says you can't hang some on the sides for an extra starting boost. If they weren't so expensive, I'd say put them out on Merge blocks, so you could jettison them when they stop providing more lift than weight. If they're NOT disposable, they're extra mass to haul up, but they're also spare parts for other things.

EDIT: As for the fuel reserves to go up, figure that it's 42km from planet 'sea level' to space. The control panel will have numbers for your thrusters max fuel usage per second. The standard speed limit is 100m/s, so you're looking at a minimum of ~420 seconds of travel if you put a brick on the 'go up' button. Figure your MINIMUM fuel reserve for ...500 seconds of full-burn. Since you'll be doing that burn, coast, burn routine to save fuel, you're coming up with with even more fuel than you *NEED* to make the ascent, but it's nice to be able to stop and explore things. It'll give you one hell of a reserve if ..."stuff" happens. (Always count on things happening, as you occasionally get pleasant surprises when they don't)
Last edited by Buzzard; May 15, 2021 @ 2:08am
flac May 15, 2021 @ 2:12am 
Originally posted by Buzzard:
Ahh, someone who likes being OVER-prepared, like I do. Your massive fuel reserves won't really hurt you while in space, as there's *always* something that can be done with the gas, and it's the best thruster for a given cubic, even if it's got an expensive logistics train behind it.

Refuelling gets really cheap if you find one of the rare ice asteroids. (made entirely of ice instead of stone) Alternatively, a trip to the nearest moon is a cheap enough jaunt. .25g for standard moons, and Earthlike's moon doesn't have an atmosphere to foul ion thrusters. (Plus, you can get platinum there easily enough)

As for your atmo thrusters for an extra boost, there's nothing that says you can't hang some on the sides for an extra starting boost. If they weren't so expensive, I'd say put them out on Merge blocks, so you could jettison them when they stop providing more lift than weight. If they're NOT disposable, they're extra mass to haul up, but they're also spare parts for other things.
Yeah I was planning on jettisoning the atmos' and parachuting them for the next time I go back to that planet. But how much Hydrogen do you think I should launch with?
Rox May 15, 2021 @ 2:20am 
Originally posted by ChipDaRippa:
... I was planning on jettisoning the atmos' and parachuting them for the next time ...

o.o ... That is a great idea, providing that when you're on the way back down you have enough hydrogen thrusters and stored hydrogen or production capacity to decelerate to a safe landing velocity. I had not thought of this before, but it's something to try... but be sure the dropped assembly or assemblies are not going to get deleted by the grid clean-up routine at your normal settings. ^.^
frag2k4 May 15, 2021 @ 3:13am 
So a few things to note about stage boosters, as Rox said you need to keep them powered unless your trash removal settings are super high. You will need to attach these with merge blocks unless using scripts due to sub grid issues with thrusters.

The stage boost should also have a battery and maybe solar panels or if you can get lucky a landing gear with wind turbines and hope it lands well enough to provide some power. You will probably need a timing block to shut down power draining devices on the booster like the thrusters and even the timing block itself, a beacon might also be handy as you might not have the thing land where you took off too.

Regarding hydrogen that depends on how heavy the ship is, I went up with a full tank for safety reasons and managed to make it with 80% of my tank remaining and I had a quiet full large cargo container going up with me.

Not sure if its mentioned or you know but when using hydrogen thrusters make sure you have the boosters in a group (if more than 1 hydro thruster) and put them on your hotbar with the increase and decrease thrust override.

Using this to increase and then decrease thrust as you fly off, when your ship hits around 100m/s (assuming no speed mod) start lowering thrust a bit until you start to lose speed a little then increase a bit until it starts going up try and keep the speed at around 90-95m/s no more than that.

This will also help save fuel for returns later.
flac May 15, 2021 @ 3:27am 
Originally posted by frag2k4:
So a few things to note about stage boosters, as Rox said you need to keep them powered unless your trash removal settings are super high. You will need to attach these with merge blocks unless using scripts due to sub grid issues with thrusters.

The stage boost should also have a battery and maybe solar panels or if you can get lucky a landing gear with wind turbines and hope it lands well enough to provide some power. You will probably need a timing block to shut down power draining devices on the booster like the thrusters and even the timing block itself, a beacon might also be handy as you might not have the thing land where you took off too.

Regarding hydrogen that depends on how heavy the ship is, I went up with a full tank for safety reasons and managed to make it with 80% of my tank remaining and I had a quiet full large cargo container going up with me.

Not sure if its mentioned or you know but when using hydrogen thrusters make sure you have the boosters in a group (if more than 1 hydro thruster) and put them on your hotbar with the increase and decrease thrust override.

Using this to increase and then decrease thrust as you fly off, when your ship hits around 100m/s (assuming no speed mod) start lowering thrust a bit until you start to lose speed a little then increase a bit until it starts going up try and keep the speed at around 90-95m/s no more than that.

This will also help save fuel for returns later.
Yeah I know all that lol
Terzu May 16, 2021 @ 4:46pm 
just build a lot of h2 generators
flac May 16, 2021 @ 11:12pm 
Originally posted by Zukuto:
just build a lot of h2 generators
bruh
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Date Posted: May 14, 2021 @ 8:53pm
Posts: 19