SpaceX is fresh off a high for its Starship spacecraft development program, but according to CEO Elon Musk, it’s already looking ahead to potentially repeating its latest success with an unplanned early reusability experiment. Earlier this week, SpaceX flew the SN15 (i.e. 15th prototype) of its Starship from its development site near Brownsville, Texas, and succeeded in landing it upright for the first time. Now, Musk says they could fly the same prototype a second time, a first for the Starship test and development effort.
The successful launch and landing on Wednesday included an ascent to around 30,000 feet, where the 150-foot-tall spacecraft flipped onto its “belly” and then descended back to Earth, returning vertical and firing its engines to slow its descent and touch down softly, standing upright. This atmospheric testing is a key step meant to help prove out the technologies and systems that will later help Starship return to Earth after its orbital launches. The full Starship launch system is intended to be completely reusable, including this vehicle (which will eventually serve as the upper stage) and the Super Heavy booster that the company is also in the process of developing.
A second test flight of SN15 is an interesting possibility among the options for the prototype. SpaceX will obviously be conducting a number of other check-outs and gathering as much data as it can from the vehicle, in addition to whatever it collected from onboard sensors, but the options for the craft after that basically amounted to stress testing it to failure, or dismantling it and studying the pieces. A second flight attempt is an interesting additional option that could provide SpaceX with a lot of invaluable data about its planned re-use of the production version of Starship.
Whether or not SpaceX actually does re-fly SN15 is still up in the air, but if it does end up being technically possible, it seems like a great learning opportunity for SpaceX that could help fast-track the overall development program.