I love rockets. Planning to build a tin rocket but not with water and air pressure. I would like to build a small metal tin rocket using fuel as RP 1 and oxidizer as LOX. I know this is too hazardous please don't try this. Is that possible to build a metal tin rocket with the same fuel used in real rockets?


closed as off-topic by DarkDust, uhoh, GremlinWranger, Jan Doggen, Boosted Nub Dec 21 '18 at 8:56

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions about dangerous amateur experiments, such as constructing your own engine or propellants are off-topic. Rockets and their propellants are INHERENTLY DANGEROUS and can pose hazards to not just yourself, but others around you (friends, family, neighbors, etc). It may also be illegal. Please see this meta post for more information." – DarkDust, uhoh, GremlinWranger, Jan Doggen, Boosted Nub
If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ A water bottle rocket by definition has no combustion. You are trying to pressurize your chamber with combustion, so this is not a question about bottle rockets but a liquid fueled rocket, even if you add water as reaction mass. Hence the close votes since you are trying to make a pipe bomb. As a place to start asking the right questions suggest Ignition! by J Clark and possibly the early history of the A4/V2. $\endgroup$ – GremlinWranger Dec 21 '18 at 8:01
  • $\begingroup$ Hi MuthukumaaranC and welcome to Space Exploration SE! This isn't a site for model rocket building, or even amateur rocket building of any kind. Have a look around at the other questions here to get an idea of what kinds of things are on-topic, or check out the section in the Help Center about asking questions. $\endgroup$ – uhoh Dec 21 '18 at 8:26
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    $\begingroup$ LOX is some pretty nasty stuff. This board isn't here to help you commit suicide. $\endgroup$ – Loren Pechtel Dec 22 '18 at 3:59
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    $\begingroup$ After your edit to use a metal rocket body - rocketry.org.au/safety-information/model-rocket-safety-code rule one. To do otherwise at the hobby level is to be making pipe bombs and it is rule one for a very good reason. To get the question off hold you need to redefine it as 'how to I safely get into model rocketry', 'how does the space industry work with LOX' or similar $\endgroup$ – GremlinWranger Dec 22 '18 at 4:08
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    $\begingroup$ Even with editing, this question continues to be about dangerous experiments. As such, it should remain closed. $\endgroup$ – DrSheldon Jan 30 at 1:31


  • the heat of combustion would soon melt your plastic bottle. RP/LOX rockets use special high-temperature metals like Inconel, and then still need to cool the nozzle to prevent melting.
  • a plastic bottle becomes brittle when you try to store LOX in it, it's unlikely to be strong enough to hold the LOX at any pressure

So we'd be talking about a different kind of rocket here: one built from metal, using two tanks to hold the LOX and RP, and with a combustion chamber to mix and ignite them.

The next step up from a bottle rocket is not LOX/RP. It's an Estes solid-fuel rocket.

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    $\begingroup$ meta.stackexchange.com/questions/194963/… $\endgroup$ – Organic Marble Dec 21 '18 at 14:58
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    $\begingroup$ I disagree with the decision to declare all of model rocketry off-topic. That decision means we're sending people off into the wilderness instead of informing them. $\endgroup$ – Hobbes Dec 21 '18 at 15:24

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