>>12151428>By "Starship alone" do you mean without the booster?Yes, as in Starship alone. Duh.
>Source?Assuming 150 tons dry mass, 150 tons payload, and 1300 tons propellant (all reasonable), with Raptor Vacuum Isp of 375, Starship achieves 6156.04 m/s of delta V with a burnout mass of 300 tons. Reserve another 100 tons of landing propellant and the delta V drops to 5098.09 m/s, still enough to get to Mars but now you can actually land. Source is I did the math, it's pretty simple.
Real world Starship's figures are gonna vary from these estimates but not by too much, and remember, all they need to do to increase the delta V is stretch the tanks a bit in order to bring up the mass fraction. In fact getting ~6 km/s in a single chemical stage isn't that hard at all, you almost need to try to be shitty in order to get less than 5 km/s per stage, but getting >7 km/s per stage is running into a wall, and much beyond that the rocket equation really starts to bite you in the ass.
Oh, and the Booster will throw Starship up to about 3.5 km/s, and it'll also have a better mass fraction than Starship. There are basically two targets for the Booster; be able to supply Starship with at least 3500 m/s, and be able to boost back to land at the launch site for reuse. That's why the Booster has been considered by SpaceX to be the easy problem; it's because it is.
>muh bigBig isn't hard, faggots. Big is big. If you don't make it hard, it won't be hard. Fuck SLS.
