| 摘要 |
PURPOSE: To enable the control of firing, extinction by specifying mean particle diameter of perchloric ammonium to the specific value or less, its content in the specific range, and combustion limit pressure to the specific value or more. CONSTITUTION: Perchloric ammonium has a mean particle diameter of 10μm or less, a content of 55 to 70% by weight, and a combustion limit pressure of 5MPa or less. The combustion limit pressure means the min. pressure value to provide the nature of a propellant. Therefore, pressure of less than that value means non-nature. The solid propellant has no combustion at the low pressure region. Thus, the solid propellant is used as fixed fuel for a propeller used in guiding an air frame, or in correcting a course, etc. As a general rocket motor, the solid propellant controls firing and extinction by changing a nozzle opening diameter to the internal pressure of the rocket motor for adjustment. In addition, previously setting an igniter enables firing to both the rocket motor and the igniter.
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