Techniques for release of material into an environment
US-2017216437-A1 · Aug 3, 2017 · US
End-burning propellant grain with area-enhanced burning surface
US2016009607A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016009607-A1 |
| Application number | US-201514794758-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 8, 2015 |
| Priority date | Jun 15, 2010 |
| Publication date | Jan 14, 2016 |
| Grant date | — |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
1 - 17 . (canceled) 18 . An end-burning grain of a solid gas-generating composition, said grain having an ignition end and a longitudinal axis, said grain comprising: a matrix propellant having a matrix propellant burn rate, wherein said matrix propellant is devoid of metallic fuels and halogen-containing additives, and a rod of ballistic control propellant embedded in said matrix propellant, wherein said ballistic control propellant comprises nitrocellulose, an energetic plasticizer, and a high-nitrogen burning rate modifier and is devoid of ammonium perchlorate, said ballistic control propellant having a ballistic control propellant burn rate that is substantially greater than said matrix propellant burn rate, said rod terminating at said ignition end of said grain, wherein the matrix propellant and the ballistic control propellants are solid propellants. 19 . The end-burning grain of claim 1 wherein said rod is substantially parallel to said longitudinal axis.
Assignees
Inventors
Classifications
conical · CPC title
of the front-burning type · CPC title
the organic component containing a resin · CPC title
made of two or more portions burning at different rates {or having different characteristics} · CPC title
the solid solution or matrix containing an organic component · CPC title
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Frequently asked questions
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- What does patent US2016009607A1 cover?
- 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.
- Who is the assignee on this patent?
- Aerojet Rocketdyne Inc
- What technology area does this patent fall under?
- Primary CPC classification C06B45/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).