I’m interested in model rockets as a hobby but launching with store-bought solid motors seems like so much kids stuff. I’m thinking that the fuel won’t be much trouble (kerosene, turpentine, maybe UDMH or straight hydrazine) but the oxidizer will be much trickier. I don’t want to handle cryogenic stuff (even though it’ll help pressurize the delivery lines) so I’ll stay away from LOX. Red or white fuming nitric acid sounds less hazardous. I’d like to hear from anyone who’s tried liquid fuels (even if it’s only on a test stand).
