Kerbal Space Program

Kerbal Space Program

Tohc Sep 21, 2013 @ 3:33am
Running out of Oxidizer
So for some reason, i cant get higher then around 6-8.000m, before i run out of oxidizer.
I think i have looked everywhere for an oxidizer only tank, or oxidizer maker, but i cant find it.
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Showing 1-15 of 34 comments
Red Comet Sep 21, 2013 @ 4:20am 
Propellant tanks in KSP have both fuel and oxidizer. The only exception are the dedicated fuel tanks meant for jet engines.

You should be running out of fuel and oxidizer at the same time. Can you post a screenshot of your rocket?
Gertjan Sep 21, 2013 @ 4:26am 
as comet said, if you use rocket tanks, you will always run out of fuel and oxidizer at the same time (yes, you use more oxidizer per second, but tanks have more in them).
the only reason i can think of is that you accidentally used airplane tanks in your rocket.

if you hover over the tanks, it will say what's in it, make sure it lists fuel and oxidizer if you want it in a rocket
Tohc Sep 21, 2013 @ 5:00am 
http://steamcommunity.com/sharedfiles/filedetails/?id=180187588

my beast. there is some modded parts, but the fuel engine and fuel tanks are stock. Mailsail engines are used.
Last edited by Tohc; Sep 21, 2013 @ 5:02am
Rene Sep 21, 2013 @ 5:19am 
Get rid of the air intakes. Those are for jet engines. Rockets bring their own oxidizer. Still that would mean you run out of liquid fuel and have oxidizer left.
Tohc Sep 21, 2013 @ 5:25am 
i know about the air intakes.. i thought they would work. .(
Red Comet Sep 21, 2013 @ 5:36am 
Originally posted by Tohc:
i know about the air intakes.. i thought they would work. .(

What did you think they would do? Their only purpose is to provide the air resource to jet engines.

Also, I see a lot wrong with this rocket no matter what your goal is. Speaking of which, what are you trying to do with this rocket?
Last edited by Red Comet; Sep 21, 2013 @ 5:37am
Zhanchi Sep 21, 2013 @ 5:36am 
i think you are running out of both as 8000 with 3 mainsail and that little amount of fuel is nomarl
Zhanchi Sep 21, 2013 @ 5:41am 
what is the point the fuel line if you are not going to turn on the engine till you geet rid of the tanks
Zhanchi Sep 21, 2013 @ 5:44am 
yeah i just think yuir payload is to big for the rocket and you are jsut running out of feul. you could add another stage or seperate the payload and connect them with docking ports in oebit. you would possible need to do both
Tohc Sep 21, 2013 @ 6:00am 
Originally posted by Red Comet:
Originally posted by Tohc:
i know about the air intakes.. i thought they would work. .(

What did you think they would do? Their only purpose is to provide the air resource to jet engines.

Also, I see a lot wrong with this rocket no matter what your goal is. Speaking of which, what are you trying to do with this rocket?

Learning to get heavy payload into orbit/space, which i did after posting.

And why make it easy.. guess i will just have to go bigger on the lifting part.... more engines = more to learn :)


Though would be sweet if there were some electric engine for space adventuring that could run of the battery/solarpanel.. not aiming for light speed... but something along the line of 100/200 M/s
Last edited by Tohc; Sep 21, 2013 @ 6:01am
Zhanchi Sep 21, 2013 @ 6:08am 
there is... you jsut need to stick a ton of ion engines on (because they suck)
they need a lot of electirc and very little xeon gas.
Fel Sep 21, 2013 @ 6:15am 
When you are in space, the engine that is the most useful is the nuclear one (LV-N).
It may have low thrust, it also consumes way less fuel overall.

As for the electric engine, I thought the same at first too, but I now undderstand why, it's been engrained into our min by SF for a long time now.
There is one very small engine running mostly on energy called Ion engine, it consumes a tiny quantity of Xenon gas (containers for xenon gas and the engine itself are with the solar panels in the VAB).

An finally, the "100 to 200 m/s" doesn't really mean anything for an engine.
Did you mean accelerating at 100 m/s² (gaining 100 m/s every second)? If so, it is a huge thrust, compared to what engines can do without using debug functions, because the most powerful engine that could do that also needs a ton of fuel, and the weight of the spaceship reuce the speed gained.
There again, I think it's more a result of SF and space games. Remember, this game is placed in a setting similar to what we have today, technology wise, just tweaked on a lot of things to make it more of a game rather than a 100% accurate simlation.
Tohc Sep 21, 2013 @ 7:10am 
What i meant with the 100/200 m/s, is an engine that can cruise at that speed at 100% throttle.

Say i get my liftoff into 100.000m, i jettison all the engines except the electric engine that can cruise at max 100 m/s, which i would need for orbital "correcting".
This may be a time consuming approch, but for me to learn better ways, i have to start it this way.

Copying what others are doing is great, but I dont learn anything from it, except how to copy/paste, and not learning the rockets weakness and/or strength.

BTW... what is SF ?
Red Comet Sep 21, 2013 @ 7:31am 
I think there's an underlying lack of understanding about the game's mechanics that's contributing to the problems.
Fox Sep 21, 2013 @ 7:35am 
SF = Sci-Fi...science fiction. What Fel is saying is that electrical engines with massive output only exist in science fiction, in real life nothing like that exists, and KSP is based on real life not fiction. So an engine like you state wouldn't really be possible I'm afraid.

Also, when you say 'cruise at max 100m/s', that doesn't really make much sense as once you get into orbit you turn off your engines and use gravity to move you at a constant rate. The only time you use engines then is to speed up/slow down so that gravity flings you in different directions to get you to where you're going. So engines in space are used for acceleration/deceleration only, they do not activley power your flight.

On the topic of copying others - the goal of watching tutorials etc is not just to copy others part by part, move by move. But rather, your aim should be to learn the basic principles behind what they are doing, and how the physics applies to that situation. Once you grasp those basic principles, you can then take those and apply them to other, different situations which you face in your own game. And from that, you can then start to think up workarounds on your own and build up your own methods for dealing with problems.

Like docking, for example. I never could get the hang of it. I'd get close to the ship I was trying to dock with, but then zoom right past it at hundreds of m/s. I watched many tutorials on the subject, and it was only after that I realised what the 'target' mode on the navball ment, and which icon on the navball corresponded to what item of data I needed. Once it 'clicked' in my mind like that, I finally began to understand the concept of matching velocity and burning towards the target from a low relative speed. I can now apply that concept when docking other ships too, regardless of circumstance, and so now I am able to build huge space stations and large multi-part ships in orbit, thanks to understanding the basic docking principles.

Hope that helps a little^^
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Date Posted: Sep 21, 2013 @ 3:33am
Posts: 34