Too many acronyms. My feeble brain is getting a headache.
By the time NASA puts this thing to work, Musk will be launching Falcons from Mars.
Look at the video. That huge burn goes on for a long time.
Can’t figure out why the tube, at least the part toward the rear, doesn’t get red hot.
Maybe the solid fuel is pushed to the rear as it burns so the burning part is always near the nozzle.