As early as Wednesday, May 5, the SpaceX team will attempt a high-altitude flight test of Starship serial number 15 (SN15). For SpaceX, this is the 5th high-altitude flight test of a Starship prototype from Starbase in Texas. SN15 has vehicle improvements across structures, avionics and software, and the engines that will allow more speed and efficiency throughout production and flight: specifically, a new enhanced avionics suite, updated propellant architecture in the aft skirt, and a new Raptor engine design and configuration.
Similar to previous high-altitude flight tests of Starship, SN15 will be powered through ascent by 3 Raptor engines, each shutting down in sequence prior to the vehicle reaching apogee - approximately 10 km in altitude. SN15 will perform a propellant transition to the internal header tanks, which hold landing propellant, before reorienting itself for reentry and a controlled aerodynamic descent.
Take a look at the SpaceX Channel on Youtube to stay tuned for more updates.