The last firing of the evening with the new aluminum chambered engine on Masten Space Systems' XA-0.1B-750 single engine VTVL flight demonstrator. The aluminum engine is incredibly light compared to more common copper-chambered engines. Night firings are so nice, they really show off the mach diamonds. This is near full throttle. It was a three second firing, and this is video at 300 frames per second, or 1/10th speed. That's also why there's no sound, as it doesn't record the audio at high speed.