Starship flight test 3 was the third flight test of the SpaceX Starship launch vehicle. SpaceX performed the flight test on March 14, 2024. Starship successfully completed a full-duration second stage burn, reaching the intended orbital velocity for the first time, but broke up during re-entry in the atmosphere.
Background
Changes from the previous flight After the second flight test in November 2023 ended in the destruction of both the Super Heavy booster and the Starship spacecraft, 17 significant changes were made to the vehicles, including upgrading the ship to an electric thrust vector control (TVC) system (the booster had received similar upgrades for the second flight test) and delaying the vent of liquid oxygen (LOX) to after Starship engine cutoff (SECO). SpaceX upgraded the orbital tank farm with additional subcoolers and pumps to increase the propellant flow rate. In addition, two water tanks were removed and scrapped. Steel plates have been added to concrete at the base of the launch tower due to erosion from the engines. A concrete wall has replaced the HESCO barriers previously protecting the tank farm.
Development prior to launch
Testing of the Flight 3 vehicles began just under a month after second flight test, with S28 and B10 undergoing their individual static fire tests in late December 2023. The FAA closed its mishap investigation of the second flight test on February 26, 2024. In the mishap report, SpaceX identified 17 corrective actions, of which ten were for the Starship upper stage and seven for the Super Heavy booster. Booster 10 and S28 conducted a wet dress rehearsal on March 3, 2024. On March 5, 2024, SpaceX announced that they were targeting a launch date of March 14, 2024, pending regulatory approval. On March 13, 2024, the FAA granted the launch license for this flight, the third flight test.
Flight profile Starship flight test 3 launched from the SpaceX Starbase facility along the South Texas coast around 8:25 CDT. As with the second flight test, ignition of all 33 booster engines and stage separation were both successful. B10 conducted a boostback burn. However, 6 engines began shutting down unexpectedly causing a premature boostback shutdown; the planned landing in the Gulf of Mexico was not successful due to the same six engines that failed before being disabled leaving seven engines commanded to startup with two successfully reaching ignition. Following the failures, SpaceX reported that the booster was destroyed at an estimated altitude of approximately 462 meters (1,516 ft). The cause of these failures was determined by SpaceX to be filter blockage of liquid oxygen to the engines. A similar problem occurred in the second flight test, leading Booster 10 to get upgraded filtering. The Starship spacecraft itself reached space and the intended orbital velocity. It then conducted several tests after engine cutoff, including a successful propellant transfer demo and payload dispenser test. It attempted to re-enter the atmosphere over the Indian Ocean, and at an altitude of around 65 km, all telemetry from Ship 28 stopped, indicating a loss of the vehicle. According to SpaceX, S28 was experiencing excessive roll rates causing it to have an "off-nominal entry". This was caused by clogging of the valves responsible for roll control on Starship.
Flight timeline
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