On Tuesday, March 30, SpaceX launched its fourth high-altitude flight test of Starship from Starbase in Texas. Similar to previous high-altitude flight tests, Starship Serial Number 11 (SN11) was powered through ascent by three Raptor engines, each shutting down in sequence prior to the vehicle reaching apogee – approximately 10 km in altitude. SN11 performed a propellant transition to the internal header tanks, which hold landing propellant, before reorienting itself for reentry and a controlled aerodynamic descent.
Shortly after the landing burn started, SN11 experienced a rapid unscheduled disassembly. Teams will continue to review data and work toward our next flight test.
Test flights are all about improving our understanding and development of a fully reusable transportation system designed to carry both crew and cargo on long-duration interplanetary flights, and help humanity return to the Moon, and travel to Mars and beyond.
Starship will enter Mars’ atmosphere at 7.5 kilometers per second and decelerate aerodynamically. The vehicle’s heat shield is designed to withstand multiple entries, but given that the vehicle is coming into Mars' atmosphere so hot, we still expect to see some ablation of the heat shield (similar to wear and tear on a brake pad). The engineering video below simulates the physics of Mars entry for Starship.
The Raptor engine is a reusable methalox staged-combustion engine that powers the Starship launch system. Raptor engines began flight testing on the Starship prototype rockets in July 2019, becoming the first full-flow staged combustion rocket engine ever flown.
DIAMETER | 1.3 m / 4 ft |
HEIGHT | 3.1 m / 10.2 ft |
THRUST | 2 MN / 440 klbf |
In 2023, Japanese entrepreneur Yusaku Maezawa and the crew of dearMoon will become the first civilian passengers on a lunar Starship mission, featuring a fly-by of the Moon during their week-long journey. The dearMoon project is currently accepting applications for eight civilians to join Yusaku Maezawa on the Starship flight, an important step toward enabling access for people who dream of traveling to space. Visit the dearMoon website to learn more on how to apply to potentially become a dearMoon crew member!