Just wanted t' test t' fuel burn time, but didn't want t' pressurize t' motor too much so It was made without a nozzle, me bucko, just an open tube. Ya scallywag! T' results were unexpected, but understandable. Blimey! Very shortly into t' burn t' whole fuel grain was ejected from t' motor and shot up about 50 ft before landin' just off camera. Arrr! Lucky water was on standby.