US3954531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite double base propellant composition containing ferric fluoride
Assignee: United States Department of the Navy
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Filing: 1973-06-14
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Granted: 1976-05-04
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Expires: 1993-06-14
Abstract
Abstract Composite-modified double base propellants containing aluminum as a metal el having ferric fluoride added as a combustion catalyst, a thermal stabilizer and an aid in reducing exhaust plume interference with a radar guidance system.
Inventors
- 👤 Theodore F. Comfort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/007
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
27 words
In a composite-modified double base propellant containing aluminum, the improvement comprising about 1-3 weight percent of ferric fluoride as a combustion catalyst in combination with said propellant.
Claim 2
Dependent Claim
27 words
In a composite-modified double base propellant containing aluminum, the improvement comprising about 1-3 weight percent of ferric fluoride as a combustion catalyst in combination with said propellant.
Claim 3
Dependent Claim
19 words
The improved composite-modified double base propellant of claim one wherein the weight percentage of ferric fluoride is about 1.5.
Claim 4
Dependent Claim
34 words
A composite-modified double base propellant comprising 10-25 weight percent of aluminum, 25-50 weight percent of ammonium perchlorate, 7-15 weight percent of nitrocellulose, 1-3 weight percent of ferric fluorine, and 15-30 weight percent of nitroglycerin.
Claim 5
Dependent Claim
34 words
A composite-modified double base propellant comprising 10-25 weight percent of aluminum, 25-50 weight percent of ammonium perchlorate, 7-15 weight percent of nitrocellulose, 1-3 weight percent of ferric fluorine, and 15-30 weight percent of nitroglycerin.
Claim 6
Dependent Claim
13 words
The propellant of claim 3 wherein the ferric fluoride constitute 1.5 weight percent.
Claim 7
Dependent Claim
21 words
The propellant of claim 3 wherein ammonium perchlorate constitute 9-25 weight percent and 9-30 weight percent of cyclotetramethylene tetranitramine is added.
Claim 8
Dependent Claim
13 words
The propellant of claim 5 wherein the ferric fluoride constitute 1.5 weight percent.
Claim 9
Independent Claim
28 words
A method of increasing the specific impulse effeciency of composite-modified double base propellants containing aluminum, comprising adding about 1-3 weight percent of ferric fluoride to the propellant composition.
Claim 10
Independent Claim
28 words
A method of increasing the specific impulse effeciency of composite-modified double base propellants containing aluminum, comprising adding about 1-3 weight percent of ferric fluoride to the propellant composition.
Claim 11
Dependent Claim
18 words
The method of claim 7 wherein about one and a half weight percent of ferric fluoride is added.
Claim 12
Independent Claim
42 words
A method of decreasing exhaust plume interference with a radar guidance system of a missile being propelled by a composite modified double base propellant having aluminum as a metal fuel comprising adding about 1-3 weight percent of ferric fluoride to the propellant.
Claim 13
Independent Claim
42 words
A method of decreasing exhaust plume interference with a radar guidance system of a missile being propelled by a composite modified double base propellant having aluminum as a metal fuel comprising adding about 1-3 weight percent of ferric fluoride to the propellant.
Claim 14
Dependent Claim
18 words
The method of claim 9 wherein about one and a half weight percent of ferric fluoride is added.
References Cited (Backward Citations)
US3811966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |