I saw the question:
And was actually beginning to wonder, is refueling and transferring propellant dangerous in space? I understand that this would most likely be largely dependent on the propellant type, which is very lacking in that post. Most of the answers dictate that "fuel" is transferred, not what type of fuel or any specifics. I'd like to know if any of the following fuels would complicate transfers between vessels beyond what the current Orbital Refueling System could handle:
- LOX Propellant
- LOX Propellant + Liquid Hydrogen
- Dinitrogen Tetroxide + Hydrazine
- RP-1 (Refined Petroleum-1)
- Ion Propellants (Hydrogen, argon, ammonia, nitrogen, etc...)
- Anything else listed here, as you see fit to touch on.
Monopropellants (Doubtfully dangerous):
Yes, I realize it's a lot of Wikipedia links, but that's how I'm slowly learning about different chemical compositions of fuel and specific impulses! Out of all my skill sets my current worst would be biology and chemistry. Feel free to correct any misnomers or other flaws in my post, thanks for taking the time to consider it too!