Propellants

Propellants

Fuels

• RP-1, storable, not dangerous, available?, moderately cheap, density: 806 kg/m3
• E85, storable, not dangerous, readily available, cheap, density: 780 kg/m3
• H2, cryogenic, not dangerous, requires specific storage and permit?, not cheap?, density: 71 kg/m3
• ETHANOL, storable, not dangerous, readily available, cheap, 92.5% density: 800 kg/m3

Oxidizers

• LOX, cryogenic, explosive, requires cryogenic storage, cheap, density: 1141 kg/m3 at 92.2K and 1 atm, 974.42 kg/m3 at 120K and 10bar
• Nitrous oxide (N₂O), refrigerated liquid (boiling at -88.5°C), non-toxic, density: 1223 kg/m3
• Hydrogen peroxide, pressurized, dangerous, expensive to have it manufactured at a high concentration, density: 1450 kg/m3 (pure)

Mixes

Oxidizer	Fuel	Isp (ground)	Isp (vacuum)	Stoichiometric	Combustion temp.	Average density
LOX	LH2	?	455	8	?	?
	RP-1	?	358	2.56	?	?
	E85	?	?	2.26	?	?
	Ethanol 92.5%	?	?	2.19	?	?