Welcome! Questions: How much of a factor is air resistence, and do things like nose caps actually improve flight performance? Currently, the shape and structure of the ship does not really affect aerodynamics. Winglet parts help with lift, but are not true wings yet (future update planned) A nose cap with no stats would just add weight to your rocket, and not help reduce drag. Why do engines near the centerline burn fuel more quickly than engines on the same stage that are situated farther out? If the engines are the same type - this sounds like a bug, now I\'m curious and may look into it ingame What causes a ship to flex along its length from a ) shape to a ( shape and back again, and what\'s the best way to prevent it? I\'ve seen that it\'s more of a problem with longer ships, but once it happens, neither SAS, fins, nor gimballed engines do much to reduce it, and I seem to just have to change the layout of the ship. Struts help a lot, the more the better and they don\'t affect the ship\'s performance negatively. Ships flex due to the loose physics currently in the game, I think HarvesteR recently stated he\'s been working on this item Is there a way to delete my old ship designs? I\'ve tried clearing out the ships folder, but not all of them are listed there. Not sure about this one - are there less craft files than ship names that show up on the VAB list ingame?