It's worth mentioning that while electric turbopumps are a lot better that pressure-fed designs, for larger engines they aren't as effective as using pre-burners (due to the weight of the batteries).
It does make the design much simpler, though.
It does make the design much simpler, though.
http://www.stuff.co.nz/technology/83804825/360kg-motor-assem...
Which makes me wonder if electric pumps might make sense for larger rockets even though their performance is lower. You'd need a larger first stage, question then is how much bigger vs cost savings from a simpler design. I don't have an out of my keister answer for that though.