https://x.com/spacex/status/1955715300256616451
>The first grid fin for the next generation Super Heavy booster. The redesigned grid fins are 50% larger and higher strength, moving from four fins to three for vehicle control while enabling the booster to descend at higher angles of attack.
https://x.com/spacex/status/1955715848724976021
>They’ll also be used for vehicle lift and catch, made possible by a new catch point addition and a lower positioning on the booster to align with the tower catch arms. Moving lower reduces the heat they receive from Starship’s engines at hot-staging and places the fin shaft, actuator, and fixed structure inside the booster’s main fuel tank