martyns1234 Posted August 16, 2018 Share Posted August 16, 2018 I want to build a real small vodka rocket using like a 1 liter of vodka, first how to build the rocket Where to get cheap vodka how to launch it Link to comment Share on other sites More sharing options...
MDZhB Posted August 16, 2018 Share Posted August 16, 2018 I hope you're kidding. Link to comment Share on other sites More sharing options...
StrandedonEarth Posted August 16, 2018 Share Posted August 16, 2018 (edited) I wonder what the max theoretical ISP is of Polish Spirit (96% ethanol) and HTP (high test peroxide)? edit: note that HTP is nasty stuff. Polish Spirit merely kills taste buds Edited August 16, 2018 by StrandedonEarth Link to comment Share on other sites More sharing options...
martyns1234 Posted August 16, 2018 Author Share Posted August 16, 2018 no 1 hour ago, MDZhB said: I hope you're kidding. no Link to comment Share on other sites More sharing options...
Dman979 Posted August 16, 2018 Share Posted August 16, 2018 Some political content has been removed from this thread. Please keep political content away from the forums. Link to comment Share on other sites More sharing options...
martyns1234 Posted August 17, 2018 Author Share Posted August 17, 2018 (edited) 11 hours ago, Dman979 said: Some political content has been removed from this thread. Please keep political content away from the forums. Wat Edited August 17, 2018 by martyns1234 Link to comment Share on other sites More sharing options...
p1t1o Posted August 17, 2018 Share Posted August 17, 2018 You cant find cheap vodka? I havnt heard of a vodka rocket before, so stop me if Im wrong, but a 60% water solution doesnt sound like it will make a rocket work. 12 hours ago, Dman979 said: Some political content has been removed from this thread. Please keep political content away from the forums. Someone managed to shoehorn politics into this tiny thread? Thats some dedicated work! Link to comment Share on other sites More sharing options...
sevenperforce Posted August 17, 2018 Share Posted August 17, 2018 You need to get above 100 proof to burn in air so you'd probably want something closer to 150-190 proof. The Walter HWK 109-509 rocket engine used in the Messerschmitt Me 163 Komet interceptor burned a hypergolic mixture of hydrazine, alcohol, and HTP. At full throttle, burning 177 pounds of propellant per second, it could develop 14.7 kN of thrust, so that's a specific impulse of around 185, give or take. A homemade alcohol-peroxide rocket would be a horrible, horrible idea, because you will very likely blow yourself up, but it could probably break 120 seconds of specific impulse. Link to comment Share on other sites More sharing options...
p1t1o Posted August 17, 2018 Share Posted August 17, 2018 (edited) 21 hours ago, martyns1234 said: I want to build a real small vodka rocket using like a 1 liter of vodka, first how to build the rocket Where to get cheap vodka how to launch it Cant believe I forgot to put this in my original response!: Welcome to the KSP forums! Heres a link to an excellent book that answers a lot of questions that are common on this site, its a link that is shared very often amongst us: https://library.sciencemadness.org/library/books/ignition.pdf If you're interested in the construction of any kind of liquid-fuelled rocket, it is required reading (dont worry, its not an academic textbook, its a good read). It might give you some insight into how good an idea it is to build a rocket from scratch without industrial support and a great deal of expertise. **edit** I tried googling for pictures of injuries recieved whilst experimenting with rocket fuels and/or explosives. Hint: do not google this if you want your stomach to feel ok today. Saw some stuff I really didnt need to see, and I was looking for something gross. Edited August 17, 2018 by p1t1o Link to comment Share on other sites More sharing options...
Mad Rocket Scientist Posted August 17, 2018 Share Posted August 17, 2018 If you want to build your own rocket, there are quite a few safety concerns. I'm not an expert (never built a liquid engine, but researched it since I want to), but this is the safety basics: Don't use frangible materials (such as steel) for your chamber. Copper is good. Treat the firing engine like a grenade. Don't let anything that you don't want hit by shrapnel be within line of sight of the engine. Especially not humans. Protect your fuel + oxidizer tanks with a metal plate. Stay far away and behind an earth berm or shrapnel proof shield while firing it. Observe the test fire with a mirror or remote cameras. Make sure there's nothing flammable nearby, and probably check with the fire department. Make sure there's no way someone not part of the project could get anywhere near the test firing. Use airhorns, etc. Don't take this as any kind of comprehensive list, there are many more ways untested high pressure devices can injure or kill you. Link to comment Share on other sites More sharing options...
martyns1234 Posted August 17, 2018 Author Share Posted August 17, 2018 1 hour ago, Mad Rocket Scientist said: If you want to build your own rocket, there are quite a few safety concerns. I'm not an expert (never built a liquid engine, but researched it since I want to), but this is the safety basics: Don't use frangible materials (such as steel) for your chamber. Copper is good. Treat the firing engine like a grenade. Don't let anything that you don't want hit by shrapnel be within line of sight of the engine. Especially not humans. Protect your fuel + oxidizer tanks with a metal plate. Stay far away and behind an earth berm or shrapnel proof shield while firing it. Observe the test fire with a mirror or remote cameras. Make sure there's nothing flammable nearby, and probably check with the fire department. Make sure there's no way someone not part of the project could get anywhere near the test firing. Use airhorns, etc. Don't take this as any kind of comprehensive list, there are many more ways untested high pressure devices can injure or kill you. Ya think that thing will fly to space, i don't need oxidizer ok aluminium thx ill buy a grenade from local gun store 4 hours ago, p1t1o said: Cant believe I forgot to put this in my original response!: Welcome to the KSP forums! Heres a link to an excellent book that answers a lot of questions that are common on this site, its a link that is shared very often amongst us: https://library.sciencemadness.org/library/books/ignition.pdf If you're interested in the construction of any kind of liquid-fuelled rocket, it is required reading (dont worry, its not an academic textbook, its a good read). It might give you some insight into how good an idea it is to build a rocket from scratch without industrial support and a great deal of expertise. **edit** I tried googling for pictures of injuries recieved whilst experimenting with rocket fuels and/or explosives. Hint: do not google this if you want your stomach to feel ok today. Saw some stuff I really didnt need to see, and I was looking for something gross. Hey, i'm not new to forums ok Is this some kind of self advertising? i want to be next elon musk lol Link to comment Share on other sites More sharing options...
0111narwhalz Posted August 17, 2018 Share Posted August 17, 2018 3 hours ago, martyns1234 said: Ya think that thing will fly to space, i don't need oxidizer Air is almost never a good enough oxidizer for rocket engines. If you want your fuel to burn at any appreciable rate, you'll need an oxidizer. Link to comment Share on other sites More sharing options...
martyns1234 Posted August 18, 2018 Author Share Posted August 18, 2018 thanks for the help guys ill try not to kill myself Link to comment Share on other sites More sharing options...
martyns1234 Posted August 18, 2018 Author Share Posted August 18, 2018 close this thread Link to comment Share on other sites More sharing options...
YNM Posted August 18, 2018 Share Posted August 18, 2018 Actually, if you're interested, I'm sure you can modify a burner first and see whether you got killed doing that. Then maybe you can get more confident. PS. do not drink rocket fuel. Link to comment Share on other sites More sharing options...
martyns1234 Posted August 18, 2018 Author Share Posted August 18, 2018 3 minutes ago, YNM said: Actually, if you're interested, I'm sure you can modify a burner first and see whether you got killed doing that. Then maybe you can get more confident. PS. do not drink rocket fuel. I'm not that dumb to kill myself Link to comment Share on other sites More sharing options...
YNM Posted August 18, 2018 Share Posted August 18, 2018 Well, it's the initiation test. If you're sure a burner won't kill you in any shape or form while modifying, working and testing on it, then the next task is to direct the flaming power so it actually produces thrust and not just pretty flame. I've never done that though. I don't even trust myself with gas tank and regulator for stove. Link to comment Share on other sites More sharing options...
martyns1234 Posted August 18, 2018 Author Share Posted August 18, 2018 ok Link to comment Share on other sites More sharing options...
Dman979 Posted August 18, 2018 Share Posted August 18, 2018 Thread locked at OP request. Link to comment Share on other sites More sharing options...
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