In June 2024, DUSF flew to America to compete in the largest student rocketry competition in the world, the Spaceport America Cup. Our first time competing internationally, we were flying a modified version of our Mach-23 winning rocket, Rosemary I. Launching at White Sands in New Mexico, Rosemary 1.1 flew to 2,690 metres carrying our new payload: a flywheel that was used to reduce the rocket's spin throughout flight.