Falcon 9 grid fin transonic breakdown

- X user z3roclarity posted a technical thread dissecting Falcon 9 grid‑fin aerodynamics across the transonic regime, highlighting complex flow features. - The thread details supersonic pockets, normal shocks, separation vortices, and how the titanium lattice design provides control and reusability. - The analysis is a practical primer on transonic CFD challenges for reusable rocket control surfaces and guidance design. (x.com)