These fins are said to be among the largest aerodynamic control surfaces ever built for a rocket. Grid fin for the next generation Super Heavy booster. SpaceX/X Elon Musk’s SpaceX has redesigned some parts of its colossal Mars-bound Starship to improve its stability and control. The most notable change is the removal of a landing fin from the Super Heavy booster, which will now use three redesigned grid fins that are 50% larger and stronger to improve vehicle control during descent. The announcement was made on Wednesday via a post on X, where SpaceX shared images revealing the complex, honeycomb-like...