High rate propellant
US4092189A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1977 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Aug 1, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S149/11
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing high burning rate solid propellant grains that have od mechanical properties and the high burning rate solid propellant grains prepared from a multimodal blend of at least one ultra-high burning rate propellant that has been cured and ground to a predetermined particle size of from about 100 microns (0.1 millimeter) to about 5 millimeters and at least one uncured propellant composition that has high tensile strength and compatibility with the ultra-high burning rate propellant and that serves as a binder for the solid propellant grain when cured. The solid propellant grain which has good mechanical and physical properties and a high burning rate burns with a flame that moves through the grain as a plane wave. Even though the individual components have different burning rates, it is the rate of the plane wave through the grain that is controlled by the averaging of the rate of burning through each of the particles of the multimodal blend and the binder propellant. The method includes preparing a cured ultra-high burning rate propellant that is subsequently ground and screened to a predetermined particle size. The ground and screened propellant is then combined …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.