COMMUNITY : ROCKETRY


I was wondering if anyone here knows how to make liquid rocket fuel

any ideas thanks bye

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spinet says: Jan 5, 2009. 2:33 PM
Mix Liquid oxygen and hydogen to make a very strong fuel
ampeyro in reply to spinetMay 5, 2012. 11:24 AM
you will also need a ton of electricity
ampeyro in reply to spinetMay 5, 2012. 11:24 AM
iquifying hho is a bad idea, it's technicaly an explosive, it's "safer" to liquify hydrogen and oxygen in two diferent tanks with two compressors
hydrogenpwr in reply to spinetJan 6, 2009. 1:47 PM
If you can tell me how to liquefy
hydrogen Ill be happy. I make about 1 Liter per minute(LPM) of DI hydrogen mon oxygen. Commonly known as HHO. Im interested in making a gas powered rocket.
lemonie in reply to hydrogenpwrMay 13, 2009. 4:06 PM
Dihydrogenmonoxide is commonly known as water

L
NachoMahma in reply to lemonieMay 13, 2009. 4:57 PM
. And you don't get monatomic Oxygen when you electrolyze (or any other process I can think of), anyway. Or was I asleep that day in Chem class? . Cool video, though.
DELETED_PeeWeeBee says: Jul 14, 2009. 9:11 AM
(removed by author or community request)
lemonie in reply to DELETED_PeeWeeBeeJul 14, 2009. 12:12 PM
What do you mean by So many of you are confusing HYDRAZINE (very toxic) with Hydrogen Peroxide?
The only person (apart from you) to have mentioned hydrazine is me, and I've not confused it.

Fail to answer this and I'll assume that you're just dumping junk randomly on the site.

L
DELETED_PeeWeeBee in reply to lemonieJul 17, 2009. 1:26 PM
(removed by author or community request)
lemonie in reply to DELETED_PeeWeeBeeJul 17, 2009. 1:39 PM
OK you're not just posting junk - I appreciate the reply.

Where has anyone mentioned "Hydrogen MONoxide and the toxicity of Hydrogen Peroxide" on this thread (not in your previous comment)
And to reiterate my previous question (which you haven't answered):
What do you mean by So many of you are confusing HYDRAZINE (very toxic) with Hydrogen Peroxide?
The only person (apart from you) to have mentioned hydrazine is me, and I've not confused it.

L
Brian Wall in reply to lemonieApr 25, 2010. 3:53 PM
i used to have hydrogen peroxide and theres barely any hydrogen but if you could make hydrogen gas and turnit into a liquid that would be nice
lemonie in reply to Brian WallApr 25, 2010. 4:03 PM
Liquefying hydrogen is not an easy or cheap job, unfortunately.

L
Brian Wall in reply to lemonieMay 6, 2010. 9:06 AM
sadly
EE1088auk in reply to lemonieSep 12, 2009. 1:00 AM
Wow. Chillax lemonie. A word of the wise, I don't care how smart you are, when you get incredibly defensive, people start to ask "I wonder why that guy is so defenisve...there must be a reason...hmmmm," even if there really is no reason at all. Please just relax as the answering of your question is pointless. (I know this was 2 months ago, but I thought it is advice you should consider at any time.)
lemonie in reply to EE1088aukSep 12, 2009. 3:39 AM
I assume you changed your user? I still don't know where you were coming from with this, or why you bothered to reply to an old comment without answering the question. L
teaaddict314 says: Apr 18, 2007. 9:46 PM
first off...what the hell would you need this for!?!?!?!?!?...wont gasoline do?????? ur at number 2 on the u.s bomb threat list arnt u??...joking lol secondly...to power space shuttles they use liquid oxygen(not too easy to obtain)
excessive.insurgence in reply to teaaddict314Feb 3, 2010. 8:19 PM
just gasoline wont do, to maximise power it must be somewhat contained and containd means minimal air, therefore gasoline wont light it needs the oxidizer. one form of liquid-like rocket feul [explained in october sky] is mixing potassium nitrate KNO3 and pure alcohol [AKA Moonshine] and this was used for small scale rockets. unfortunately my teenage ignorance hinders my knowing ratios of KNO3 and alcohol or the chemical energy stored in the final product. *sad face*
teaaddict314 in reply to excessive.insurgenceFeb 3, 2010. 9:24 PM
this comment is 3 years old....
natethegreat88 in reply to teaaddict314Oct 3, 2009. 12:03 PM
And im #1... (jk)
CameronSS in reply to teaaddict314Apr 18, 2007. 11:09 PM
To power space shuttles they use liquid hydrogen. To oxidize the hydrogen in a vacuum they use liquid hydrogen. And the SRBs are powered by atomized aluminum powder, which is oxidized by ammonium perchlorate with a bit of iron oxide mixed in.
nfk11 says: Jan 19, 2010. 9:33 AM
use:oil,fome peanuts,some soda and a mentos in everything and now you have liquid rocket fuel.
52193 says: Jan 10, 2010. 1:40 PM
you can use gasoline and a 50% hydrogen peroxide solution for oxidizer.  go to this web site for plans:
http://home.total.net/~launch/
fireball01e says: Jan 21, 2009. 5:22 PM
Hi, i have made and experimented with a couple home/workshop built liquid fuel motors. I used a system of keosene/aircraft fuel, pumped oxygen and a blast of nitro on one model. out of all 12 experiments, only one made it off the ground. The rest exploded, mainly because of the fuel sources being mounted above the engines (its a rocket, so i had no choice but to install them there). The system is fairly safe on a test stand. Im going to build another proto during april and ill get the video up. The hydrogen/liquid fuel method is very hard to make the fuel and also the engines are not very affective (and when they are, they have a tendancy to overheat causing fire/explosion). but this depends on your designs, facilities to cast the components or locate components and how much you are putting into your project. Also last word of warning; most liquid fuel engines/fuel storage is very heavy, so you must think of extra risk factors like; size, parachute, failsafes and propulsion. if one of these aspects are over looked or not followed, you could possibly cause alot of damage and possibly kill someone.
poop#1 in reply to fireball01eJul 16, 2009. 11:57 PM
how big was the nozzle hole because too much pressure can make it explode
poop#1 says: Jul 16, 2009. 11:52 PM
their are many propellents one of them that i might use is kerosene and alchohol, hydrogen and liquid oxygen is another but i dont recommend that, the basics of liquid propellent is that their are two parts to it fist is the oxidizer wich helps ignite and combust second is the fuel wich helps that flame keep going. see alchohol is realy flammble if their is a high percentage of it , which makes it the oxidizer , next is the kerosene which can last a very long time so that makes it the fuel. you can also have a liquid oxidizer and a solid fuel(which is much safer) so now all i have to say now is be safe and goodluck
oscarthompson says: Jul 3, 2009. 9:37 AM
you can make h20 though electrolocis
lemonie says: Mar 26, 2007. 1:53 PM
Binary liquid fuels? Yes, but you'd have a job getting both liquid components, and you shouldn't try it either.
nutsandbolts_64 in reply to lemonieMay 13, 2009. 9:01 AM
How about water rocket tech only the liquid is a flammable one, air pushes on the liquid through an atomizer which has a heat source that ignites the liquid through a nozzle . If it's not good enough then I'll think of something. Simple though, I think, no idea where to get atomizer, maybe a narrow hole will do to make a line that will ignite in a nozzle .
lemonie in reply to nutsandbolts_64May 13, 2009. 10:39 AM
You could do that with a can of butane, but you wouldn't get enough thrust out of it. Chemical-fuel rockets use high energy density fuels and oxidisers. Some examples: Hydrazine hydrate (nasty) / concentrated hydrogen peroxide (dangerous) Hydrazine hydrate (nasty) / concentrated nitric acid (dangerous) Kerosene / liquid oxygen (very dangerous) Liquid hydrogen (very dangerous) / liquid oxygen (very dangerous) L
KentsOkay in reply to lemonieMay 13, 2009. 10:43 AM
lemonie in reply to KentsOkayMay 13, 2009. 12:24 PM
You look so much younger there/then... That's a single push rather than a sustained-burn, but a super Instructable. L
KentsOkay in reply to lemonieMay 13, 2009. 12:47 PM
Hey man, that thing is over a year old. I should hope I look younger.
KentsOkay says: May 13, 2009. 10:43 AM
WalkaboutTigger says: Mar 22, 2009. 2:21 PM
One aspect of liquid-fueled rockets I have not seen here is the immediacy of launch when using liquefied propellants. Generally, when using a liquid fuel for rockets, the vehicles cannot be stored with fuel. Additionally, most backyard rocketry hobbyists are not equipped to perform nitrogen or argon purges of their propellant tanks after test fueling their bird. The "best" liquid fuels for hobbyists are those that are relatively stable at room temperature and have reasonably high flash points. Gasoline, for example, is a much safer fuel than methyl ethyl ketone. For nozzles for liquid-fueled rockets, are generally made from less-reactive materials than solid-fueled rockets. This is because you generally want to recover and reuse liquid-fueled rockets. Liquefied gases (such as liquid oxygen) can generally be purchased by anyone over 21 from companies who specialize in LOX and dry ice. Prior to building or launching any rocket, check your local, state and federal laws regarding model rocketry.
cd41 says: Jan 28, 2009. 4:24 PM
this scared me.. Probably beecause when i looked it was under a thread about homemade explosives or it may have to do with the fact that we are almost to weird for our own good.
assasin says: Mar 31, 2007. 9:15 PM
ive heard mixing nail polish remover(acetone)and hydrogen peroxide does sum thing. if u guys know reply
namestakin in reply to assasinDec 30, 2008. 5:09 PM
Acetone peroxide (TCAP) is to unstable for rocket, not to mention it's something the average American shouldn't be doing. Though hydrogen peroxide and mangenese dioxide react and this is sometimes used for rocket fuel. But they use upwards of 90% hydrogen peroxide.
westfw in reply to namestakinDec 30, 2008. 9:54 PM
Heh. Back when I was a kid, and a chemistry buff, and a space nut, I made up these "plans" for a rocket that dripped peroxide on MnO2 to create the oxygen that I had read was needed. I just had no concept of the sort of mass flow involved... (Hey, we're talking like 8 years old, in 1967 or so!)
namestakin in reply to westfwDec 31, 2008. 10:45 AM
Do you by chance remember what percentage of peroxide you used?
westfw in reply to namestakinDec 31, 2008. 1:46 PM
it was a paper design; I think I planned to use ordinary drug-store (3%) peroxide. It never would have worked at all, even if I had built it. It was right up there with the solid fuel rocket I made, after being warned about fine-powder explosions by my dad ("nearly anything will burn if finely enough powdered. Grain silos explode periodically") by packing some copper pipe with powdered chalk...
Tombini in reply to assasinNov 30, 2008. 11:57 PM
Go ahead make acetone peroxide, tell me how it goes... seriously blowing your hands off isn't fun
dogsrcool2me in reply to assasinApr 19, 2007. 12:57 AM
Bad Idea! this would EXTREMELY unstable.
assasin in reply to dogsrcool2meApr 19, 2007. 7:34 AM
the terrorists were going to use it in that plot to hyjack 11 planes a couple months ago.
Tombini says: Nov 30, 2008. 11:59 PM
A very common hybrid propelled rocket propellant is compressed hydrogen peroxide reacted through solid rubber or and other non-brittle fuel
That Hurt This Time says: Apr 14, 2007. 11:00 PM
wow. just reading these comments makes me think of when that guy on nitro circus 3 got hit in the head with a rocket
KentsOkay says: Mar 31, 2007. 7:37 PM
This link ( link ) will take you to a group that has my topic on making a liqued fuel rocket
frank26080115 says: Mar 27, 2007. 10:34 AM
get concentrated rubbing alcohol and liquid oxygen, compress them in two different tanks and release and mix the two in a combustion chamber and then have a nozzle direct the gases out
remember to use check valves and flame arrestors so the gases don't mix and ignite inside the pressurized fuel tanks
if you mix the two into one single tank and expect it to work, you will die in a horrible explosion
http://science.howstuffworks.com/ez-rocket.htm
westfw in reply to frank26080115Mar 31, 2007. 4:45 PM
LOX is actually pretty easy to obtain. Sorta scary. Liquids can't be compressed, though, and LOX has a habit of boiling at room temperature, so it's not quite so simple. If you're interested in making rocket motors, the "next step" up from solid fuel is probably a "hybrid motor" using nitrous oxide as the oxidizer. There have even been successful "tri-bird" motors that start as a Nitrous/solid hybrid and then inject alcohol for liquid-fuel operation. Unlike lox, nitrous "self-pressurizes" to reasonable levels (~700psi)
lemonie in reply to frank26080115Mar 31, 2007. 2:39 PM
What is concentrated rubbing alcohol? IPA is IPA, surely?
And how would you source LOX?
frank26080115 in reply to lemonieMar 31, 2007. 3:40 PM
the stuff at drug stores is only a few percent alcohol though can't you buy liquid oxygen for welding and such?
lemonie in reply to frank26080115Apr 1, 2007. 3:58 AM
I get it with the alcohol, but you could use other fuels. Liquid oxygen boils at -183'C and as such requires specialised storage and transport: not easy to get hold of (unfortunately).
Kiteman says: Mar 26, 2007. 5:28 PM
Concentrated ydrogen peroxide pumped through a hot silver catalyst. It breaks down into large volumes of steam and oxygen gas:

http://science.howstuffworks.com/question159.htm

http://en.wikipedia.org/wiki/Hydrogen_peroxide

http://www.spaceuk.org/htp/htp.htm
trebuchet03 in reply to KitemanMar 27, 2007. 5:10 PM
Question for you..... I really don't want to screw around with it, I just want to further my knowledge..... How is MEK Peroxide used as a rocket fuel? I ask because of the few people I know that work with it, all of them have made a rocket fuel reference. I'm talking of concentrations in the 50-65% range (which is the same concentration used for polyester resin catalysts).
Kiteman in reply to trebuchet03Mar 28, 2007. 12:18 PM
That's a resin of some sort, isn't it? A lot of modern solid fuel rockets (boosters and such) use resins as the fuel, with an oxidiser mixed into the resin while it is still liquid. That makes it easy to shape into the correct cross-section without falling out of the rocket (as powders can), and adds strength to the structure so that less weight is needed on bodywork. I've even heard of rockets using asphalt as a fuel (without the gravel).
Kiteman in reply to KitemanMar 28, 2007. 12:23 PM
Yoink - I've just googled it - MEKP is explosive! It would go off as soon as you started to pump it!
royalestel in reply to KitemanMar 27, 2007. 11:00 AM
That's the rocket pack formula.
Kiteman in reply to royalestelMar 27, 2007. 1:09 PM
It's what the UK space-programme ran on as well, until the politicians pulled the funding.
royalestel in reply to KitemanMar 27, 2007. 1:15 PM
I thought all the UK programs ran on lagers and ales?
Kiteman in reply to royalestelMar 27, 2007. 4:21 PM
:-D Don't forget tea and biscuits as well...
Aeshir in reply to KitemanMar 26, 2007. 7:54 PM
What about a catalyst for baking soda/vinegar? Is there such a thing?
Kiteman in reply to KitemanMar 26, 2007. 5:30 PM
>doh<

Concentrated Hydrogen peroxide...
jtobako says: Mar 25, 2007. 4:35 PM
gasoline, same as Goddard started with.
royalestel in reply to jtobakoMar 27, 2007. 11:01 AM
Yeah, just use gasoline. It's got a great weight/power ratio. And a gazillion times safer (but you could still get yourself killed).
Aeshir says: Mar 26, 2007. 7:52 PM
Zincoshine! Or Rocket Candy! Lol. From a book I read called Rocket Boys (true story, made into a movie called October Sky).
Kiteman in reply to AeshirMar 27, 2007. 6:26 AM
They aren't liquid fuels. Fun, though.
photozz says: Mar 26, 2007. 4:13 PM
I don;t know why, but reading your question made me giggle. Kinda like asking, "Does anyone know how to soak up large amounts of blood?"
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