>>12930900There isn't much info on dragon delta v but assuming around 1.3 tons according to superdraco page in wikipedia, and 6 tons total mass for the vehicle we get about 700m/s for the dragon alone.
Seems quite hefty but might make sense considering it was intended to land propulsively on mars.
Anyway:
>iss 420 tons>dragon 4.7 tons>fuel 1.3 tons>isp 235>total change in velocity is grand total of 8.54m/s (note the decimal)To send it to the moon we'll need ~4100m/s so that's about 480 prepositioned in various orbits crew dragons that will dock, burn, and then undock to let the next one take over. Naturally they must save as much fuel as possible in orbital maneuvers so docking is going to be an ass.
The numbers might be inaccurate though as there will be atmospheric drag on perigee, but also the oberth effect from dragons burning there. Complicated stuff.
Interestingly, starship will do better:
>iss 420 tons>starship 120 tons>fuel 1200 tons>isp 380>total change in velocity is whooping ~4300m/sIf you dock one in lunar orbit you could land the ISS on the moon.
Naturally, the ISS is not designed to withstand the thrust or trust of the Starship so it'll crumple. The dragon will just break the docking port and maybe the solar panels the first time it fires.
