US4427466A
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Advanced monopropellants
Assignee: Boeing North American Inc
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Filing: 1982-07-12
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Granted: 1984-01-24
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Expires: 2002-07-12
Abstract
Abstract A liquid monopropellant comprising a mixture of a 1-nitroxy-3-nitrazaalkane oxidizer such as 1-nitroxy-3-nitrazapentane (NNPE) or 1-nitroxy-3-nitrazabutane and mixtures thereof; an energetic azido fuel such as azido alcohols represented by 1-azidoethanol, 1,3-diazidopropanol; azidonitramines represented by 1-azido-3-nitrazapentane, and 1,5-diazido-3-nitrazapentane and mixtures thereof; and a diluent such as methanol and ethylene glycol and mixtures thereof.
Inventors
- 👤 Joseph E. Flanagan
- 👤 Edgar R. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:55
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/34; C06B25/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
14 words
A liquid monopropellant comprising a 1-nitroxy-3-nitrazaalkane oxidizer, an energetic azido fuel, and a diluent.
Claim 2
Dependent Claim
14 words
A liquid monopropellant comprising a 1-nitroxy-3-nitrazaalkane oxidizer, an energetic azido fuel, and a diluent.
Claim 3
Dependent Claim
22 words
The liquid monopropellant of claim 1 wherein said 1-nitroxy-3-nitrazaalkane is selected from the group consisting of 1-nitroxy-3-nitrazabutane and 1-nitroxy-3-nitrazapentane, and mixtures thereof.
Claim 4
Dependent Claim
11 words
The liquid monopropellant of claim 2 wherein said 1-nitroxy-3-nitrazaalkane is 1-nitroxy-3-nitrazapentane.
Claim 5
Dependent Claim
26 words
The liquid monopropellant of claim 1 wherein said energetic azido fuels are selected from the group consisting of azido alcohols and azido nitramines, and mixtures thereof.
Claim 6
Dependent Claim
22 words
The liquid monopropellant of claim 4 wherein said azido alcohols are selected from the group consisting of 1-azidoethanol, 1,3-diazidopropanol and mixtures thereof.
Claim 7
Dependent Claim
21 words
The liquid monopropellant of claim 4 wherein said azidonitramines are selected from the group consisting of 1-azido-3-nitrazapentane, 1,5-diazido-3-nitrazapentane and mixtures thereof.
Claim 8
Dependent Claim
23 words
The liquid monopropellant of claim 1 wherein said diluent is selected from the group consisting of methanol and ethylene glycol, and mixtures thereof.
Claim 9
Dependent Claim
11 words
The liquid monopropellant of claim 5 wherein said diluent is methanol.
Claim 10
Dependent Claim
36 words
The liquid monopropellant of claim 1 comprising from about 30 to about 80 weight percent oxidizer, about 10 to about 30 weight percent energetic azido fuel, and from about 10 to about 40 weight percent diluent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |