US4410749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid hydrocarbon air breather fuel
Assignee: United States Department of the Navy
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Filing: 1981-10-13
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Granted: 1983-10-18
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Expires: 2001-10-13
Abstract
Abstract A high energy, high density synthetic liquid hydrocarbon fuel, RJ-6, is prepared by blending 60 weight percent perhydrodinorbornadiene, a synthetic fuel known as RJ-5, and 40 weight percent exo-tetrahydrocyclopentadiene, a synthetic fuel known as JP-10. This fuel is particularly suitable for use in air launched ramjet engine applications such as aircraft missile systems. This new fuel substantially meets the desirable viscosity, energy content, and flash point of the previously employed synthetic fuel blend while exhibiting superior storage characteristics in elastomeric fuel systems used in missile applications.
Inventors
- 👤 George W. Burdette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:16
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A composition of matter having a density of about 1.020 gram/per cubic centimeter and a viscosity of about 8 centipoises at 20° C., a viscosity of about 154 centipoises at -40° C. and a flash point of about 66° C., useful as a fuel, consisting essentially of about 60 weight percent RJ-5, a production run fuel having as components at least two different isomers of perhydrodinorbornadiene, and about 40 weight percent JP-10, exo-tetrahydrodicyclopentadiene.
Claim 2
Dependent Claim
73 words
A composition of matter having a density of about 1.020 gram/per cubic centimeter and a viscosity of about 8 centipoises at 20° C., a viscosity of about 154 centipoises at -40° C. and a flash point of about 66° C., useful as a fuel, consisting essentially of about 60 weight percent RJ-5, a production run fuel having as components at least two different isomers of perhydrodinorbornadiene, and about 40 weight percent JP-10, exo-tetrahydrodicyclopentadiene.
References Cited (Backward Citations)
US4207080A
Cited
US4087257A
Cited
US4222800A
Cited
US4270014A
Cited
US4286109A
Cited
US4320238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |