| 摘要 |
<p>Dual-thrust solid propellant rocket motors and a method of making them are described. The motors include a housing having a nozzle at one end, a first propellant grain received by the housing, a second propellant grain received by the first propellant grain, and igniter means. In the method, a housing is filled with a first propellant grain material, a cured second solid propellant grain is forced within the housing to a desired depth, the first propellant grain material is cured with the second solid propellant grain held in place, and the igniter means and the nozzle are attached.</p> |
