End-burning propellant grain with area-enhanced burning surface
US9079807B2 · kind B2 · utility
0Cited by
11References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/232
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An end-burning grain of a solid rocket motor or other gas-generating device is supplemented with one or more sticks of high-burn-rate propellant embedded in a matrix of a relatively low-burn-rate propellant. The sticks increase the burning surface area as the grain burns by forming conical indentations in the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.