Your video says "LOX tank extension". This implies a bigger mod than you might be doing. Are you just changing the shape of the end of the tank?You might make a note of this for your next release.
I would also be interested in the total weight on the pad of Shuttle and Jupiter 130. Given they have the same engines and prop, the gross weight on the pad is probably the same. This might be an easy way to show the performance of Jupiter 130 does NOT defy the laws of physics.
Is there a summary of updates somewhere from 2.0 to 3.0?
snipThey're similar, but Jupiter is actually slightly lower. We've done that because we are including extra margins. While Shuttle is a mature system, Jupiter will be a new one and we would rather have greater margin, at least until Jupiter also matures.Ross.
You do need more margin because of the significant changes to structure and new structures to be developed. I would add 20% margin to all new structure. This would not include the whole ET, just the part of the ET that was new. Maybe a direct comparison of Shuttle and Jupiter gross weights on the pad would be useful. This is rocket science even a congressman/senator can understand.