High Power Rocket Motor 3
High Power Rocket Motor 3 : A rocket motor that has more than 160 N-sec (36 lb-sec) but no more than 40,960 N-sec (9208 lb-sec) of total impulse, or that produces an average thrust of greater than 80 N (18 lbf), or that contains greater than 62. 5 g (2. 2 oz) of propellant