Abstract :
Solid fuel rocket motors are usually tubular-shaped, with varying lengths and diameters. One that is, unconventionally, round as a ball except for a flat circular area surrounding the inverted nozzle, has been successfully static-test fired. It was developed by the Naval Ordnance Test Station (NOTS) at a B. F. Goodrich plant for use on the upper stages of far-out atmospheric sounding rockets such as the Navy´s Blue Scout series.