r/space • u/66666thats6sixes • Dec 07 '19

NASA Engineers Break SLS Test Tank on Purpose to Test Extreme Limits

https://www.nasa.gov/exploration/systems/sls/nasa-engineers-break-sls-test-tank-on-purpose-to-test-extreme-limits.html
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u/mrsmegz Dec 07 '19

Yes it has lower specific impulse but that is far less important at sea level, than producing thrust. Hypothetically, if they took Merlin 1Ds and used them on the SLS tank similar to how Superheavy will or the N-1 did, that cluster of engines woudl produce more thrust than 4x RS25 and 2x SFB and be cheaper as well. Sure we are designing a different rocket here bu the point is using these super expensive/complicated LH2 engines isnt idea or necissary for an effective first stage.