CASTOR 120

CASTOR 120 is a retired, flight-proven vectorable solid rocket motor model in Northrop Grumman's CASTOR family. Northrop Grumman's catalog describes it as a medium-sized booster designed primarily for in-line use but configurable as a strap-on with movable-nozzle thrust-vector control; it has been used in both first- and second-stage applications. The catalog gives a 92-inch diameter, 355-inch length, 440,000 lbf (about 1,957.2 kN) maximum vacuum thrust, 280 seconds specific impulse, 79.4 seconds burn time, 30,000,000 lbf-sec total impulse, and TP-H1246 HTPB polymer with 19% aluminum. The current product catalog records four static-fire tests, 17 motors flown, and out-of-production status; exact Athena, Taurus, and Minotaur-C installations remain represented on vehicle-family records.