This was a 3500 lbf hybrid rocket motor static test fire located about 25 miles north east o' Majove in t' Antelope Valley in southern california. Blimey! I be just a spectator t' this test, ya bilge rat, so I don't know very much about it, but what I do know is that it used peroxide and HTPB. Avast, me proud beauty! T' fluxuations within t' test are throttlin' o' t' motor. Its nay any instablility within t' combustion. Avast! Marshmellows anyone?