Method of making dual-thrust rocket motor

摘要

1. A method of making a dual-thrust rocket motor comprising: filling a rocket motor housing with a first propellant grain material, forcing a cured second solid propellant grain centrally within the first propellant grain material and substantially to the bottom thereof, curing the first propellant grain with the second solid propellant grain held in place, and attaching an igniter means and nozzle means to the housing.