A Hotfire Stage will be transported to a firing platform where 4 engines will fire in sync, along with a gimble test where the engines will rotate in different directions during the hotfire, its planned to be atleast 2 minutes long to properly test the full capacity in the engines, the chamber pressures will be at maximum during the test, so a failure is likely, but we will take every cautionary step to insure this remains a safe, and exciting test, your probably asking, what vehicle will transport the full first stage?, well, we are currently testing a fully integrated SPMT - Like vehicle with the same launch tower segment style from our self built launch pads, but it will be a Horizontal fixed structure, unlike the rotating vertical structure that supports launches, this first stage, indeed will be the first stage of
STELLARIS UW11