3 ms·
The fuel mass is already incorporated into Isp. Hydrogen being less dense causes a problem (not solves one) because the fuel tanks need to be much larger for t
by CydeWeys 6y ago
The fuel mass is already incorporated into Isp.
Hydrogen being less dense causes a problem (not solves one) because the fuel tanks need to be much larger for the same propellant mass, and thus you're adding a lot of structural mass.