/sci/ - Science & Math

>>14784751
If you've found a retard willing to listen to an explanation as to why they're wrong about reusability using up >10% of a LV's fuel, first of all lol you haven't, but just for fun here's a preschool level explanation:
We'll give each second an engine fires a "fuel point"
For example, Falcon 9, fires all 9 of it's engines for ~2:30 on initial ascent, so 9 x 150 = 1350
Re-entry burn, 3 x 25 = 75
Landing burn, 1 x 30 = 30
Total reusability related fuel consumption is 105 fuel points, around 7%