7 ms·

Glucose can be used as a component in solid fuels, you just need to find an oxidizer to mix in. Alternatively, you can break it down into ethanol, which has be

Glucose can be used as a component in solid fuels, you just need to find an oxidizer to mix in. Alternatively, you can break it down into ethanol, which has been used as liquid rocket fuel since at least the first half of the '40s.

PaulHoule 1y ago
See https://en.wikipedia.org/wiki/Qassam_rocket https://en.wikipedia.org/wiki/Qassam_rocket This classic book tells the story of liquid rocket fuel development https://library.sciencemadness.org/library/books/ignition.pdf https://library.sciencemadness.org/library/books/ignition.pd... You'd think that you could mix any of a wide range of fuels with a wide range of oxidizers and get a good rocket fuel but it does not really work that way, most combinations are pretty awful, including the ethanol + O2 used in the V2. There was a time when there was interest in "storable" liquid propellants but once solid propellants reached this level of maturity https://en.wikipedia.org/wiki/LGM-30_Minuteman https://en.wikipedia.org/wiki/LGM-30_Minuteman those were obsolete. It is hard to beat H2+oxygen or hydrocarbons+oxygen if you pick the right hydrocarbons (rocket kerosene isn't quite the kerosene you use in a lamp) I'm not sure if ethylene is really that good of a rocket fuel. In the context of a space economy I see it as a "reactive carbon" substance which is easy to make other things out of, say, https://en.wikipedia.org/wiki/Polyethylene https://en.wikipedia.org/wiki/Polyethylene in the sense that glucose is reactive carbon you can build structural carbohydrates and all sorts of biological molecules out of. There is talk about SpaceX establishing a methane economy on Mars, methane is definitely an easy to synthesize rocket fuel but it not very reactive and not on the path to making other things you might want.
LargoLasskhyfv 1y ago
Reminds me of "UnkrautEx und Puderzucker". Sort of early 'RoundUp' with high contents of Sodium chlorate combined with powdered sugar. Very dangerous! But fun :-) Even more fun, but potentially fatal very fast would be Potassium chlorate. But I've been cautious, and limited myself to selfmade blackpowder mostly, during the times one 'did that' as young boys with toys. Still have all my fingers, no burn scars, full eyesight & hearing, though. Phew! :-)
- sharpshadow 1y ago
  The early internet had some wild recipes online, almost unimaginable today. A bit curious how long I would have to dig to find those things, if at all, but really don’t feel to leave that trail.
  - LargoLasskhyfv 1y ago
    Try https://en.wikipedia.org/wiki/The_Golden_Book_of_Chemistry_Experiments https://en.wikipedia.org/wiki/The_Golden_Book_of_Chemistry_E... Btw, when I did this the internet didn't exist, 1977 to 1980, I think. It was in schoolbooks for chemistry, not chlorate stuff, but blackpowder at least. I also went into university libraries for more advanced stuff, after understanding teachers gave hints, and warnings, about not doing anything which one doesn't really understand. Not limited to explosives. Toxicity, fumes, pH, and so on. We've been really dumbed down. No more interesting experimental kits ( https://en.wikipedia.org/wiki/Chemistry_set https://en.wikipedia.org/wiki/Chemistry_set ) . No more availability of the ingredients. I could walk into a drug store and get that stuff for chump change, there. Not needing to produce finest charcoal myself. Or sulfur. Potassium nitrate. Flashbulbs and a 9V-block and some wires for electrical ignition!1!! Bang! Whee! edit: Thinking about it I can't shake the feeling that it did not make us safer. Though that may depend on the country. Anyway, one does hear and read about much more loud booms caused by reckless use of smuggled illegal fireworks year round. Be it just for fun, ripping up trashcans, recycling containers, shopping windows, ATMs... Or the really 'good stuff' (military) smuggled in from afar. Or, well... just guns?

PaulHoule 1y ago

See https://en.wikipedia.org/wiki/Qassam_rocket https://en.wikipedia.org/wiki/Qassam_rocket This classic book tells the story of liquid rocket fuel development https://library.sciencemadness.org/library/books/ignition.pdf https://library.sciencemadness.org/library/books/ignition.pd... You'd think that you could mix any of a wide range of fuels with a wide range of oxidizers and get a good rocket fuel but it does not really work that way, most combinations are pretty awful, including the ethanol + O2 used in the V2. There was a time when there was interest in "storable" liquid propellants but once solid propellants reached this level of maturity https://en.wikipedia.org/wiki/LGM-30_Minuteman https://en.wikipedia.org/wiki/LGM-30_Minuteman those were obsolete. It is hard to beat H2+oxygen or hydrocarbons+oxygen if you pick the right hydrocarbons (rocket kerosene isn't quite the kerosene you use in a lamp) I'm not sure if ethylene is really that good of a rocket fuel. In the context of a space economy I see it as a "reactive carbon" substance which is easy to make other things out of, say, https://en.wikipedia.org/wiki/Polyethylene https://en.wikipedia.org/wiki/Polyethylene in the sense that glucose is reactive carbon you can build structural carbohydrates and all sorts of biological molecules out of. There is talk about SpaceX establishing a methane economy on Mars, methane is definitely an easy to synthesize rocket fuel but it not very reactive and not on the path to making other things you might want.

LargoLasskhyfv 1y ago

Reminds me of "UnkrautEx und Puderzucker". Sort of early 'RoundUp' with high contents of Sodium chlorate combined with powdered sugar. Very dangerous! But fun :-) Even more fun, but potentially fatal very fast would be Potassium chlorate. But I've been cautious, and limited myself to selfmade blackpowder mostly, during the times one 'did that' as young boys with toys. Still have all my fingers, no burn scars, full eyesight & hearing, though. Phew! :-)

sharpshadow 1y ago
The early internet had some wild recipes online, almost unimaginable today. A bit curious how long I would have to dig to find those things, if at all, but really don’t feel to leave that trail.
- LargoLasskhyfv 1y ago
  Try https://en.wikipedia.org/wiki/The_Golden_Book_of_Chemistry_Experiments https://en.wikipedia.org/wiki/The_Golden_Book_of_Chemistry_E... Btw, when I did this the internet didn't exist, 1977 to 1980, I think. It was in schoolbooks for chemistry, not chlorate stuff, but blackpowder at least. I also went into university libraries for more advanced stuff, after understanding teachers gave hints, and warnings, about not doing anything which one doesn't really understand. Not limited to explosives. Toxicity, fumes, pH, and so on. We've been really dumbed down. No more interesting experimental kits ( https://en.wikipedia.org/wiki/Chemistry_set https://en.wikipedia.org/wiki/Chemistry_set ) . No more availability of the ingredients. I could walk into a drug store and get that stuff for chump change, there. Not needing to produce finest charcoal myself. Or sulfur. Potassium nitrate. Flashbulbs and a 9V-block and some wires for electrical ignition!1!! Bang! Whee! edit: Thinking about it I can't shake the feeling that it did not make us safer. Though that may depend on the country. Anyway, one does hear and read about much more loud booms caused by reckless use of smuggled illegal fireworks year round. Be it just for fun, ripping up trashcans, recycling containers, shopping windows, ATMs... Or the really 'good stuff' (military) smuggled in from afar. Or, well... just guns?