Liquid monopropellant

• US 6,001,197 A
• Filed: 08/26/1998
• Issued: 12/14/1999
• Est. Priority Date: 08/26/1998
• Status: Expired due to Fees

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Wagaman, Kerry L.
• Primary Examiner(s): Jordan, Charles T.
• Assistant Examiner(s): FELTON, AILEEN BAKER
• Application Number:
  US09/140,412
• Time in Patent Office: 475 Days
• Field of Search: 149/1, 149/45, 149/46, 60/214, 60/217
• US Class Current: 149/45
• CPC Class Codes: C06B 31/00 Compositions containing an inorganic nitrogen-oxygen salt
• CPC Class Codes: C06B 31/32 with a nitrated organic compound
• CPC Class Codes: C06B 47/00 Compositions in which the components are separately stored until the moment of burning or explosion, e.g. "Sprengel"-type explosives; Suspensions of solid component in a normally non-explosive liquid phase, including a thickened aqueous phase

Abstract

A liquid monopropellant having

(1) from about 10 to about 80 weight percent of an substituted ammonium nate which is methylammonium nitrate, dimethylammonium nitrate, trimethylammonium nitrate, ethylammonium nitrate, diethylammonium nitrate, n-propylammonium nitrate, isopropylammonium nitrate, ethanolammonium nitrate, diethanolammonium nitrate, triethanolammonium nitrate, or mixtures thereof,

(2) from about 5 to about 60 weight percent of ammonium nitrate, and

(3) from about 5 to about 50 weight percent of water.

A second embodiment of this invention is a monopropellant in which ammonium nitrate is omitted and from about 60 to about 95 weight percent of the substituted ammonium nitrate and from about 5 to about 40 weight percent of water is used.

Claims

1. A liquid monopropellant consisting essentially of

A. from about 10 to about 80 weight percent of a substituted ammonium nitrate which is methylammonium nitrate, dimethylammonium nitrate, trimethylammonium nitrate, ethylammonium nitrate, diethylammonium nitrate, n-propylammonium nitrate, isopropylammonium nitrate, ethanolammonium nitrate, diethanolammonium nitrate, triethanolammonium nitrate, or mixtures thereof,

B. from about 5 to about 60 weight percent of ammonium nitrate, and

C. from about 5 to about 50 weight percent of water.

2. The liquid monopropellant of claim 1 wherein the substituted ammonium nitrate is methylammonium nitrate, ethylammonium nitrate, ethanolammonium nitrate or mixtures thereof.

3. The liquid monopropellant of claim 2 wherein the substituted ammonium nitrate is methylammonium nitrate, ethylammonium nitrate, or mixtures thereof.

4. The liquid monopropellant of claim 3 wherein the substituted ammonium nitrate is ethylammonium nitrate.

5. The monopropellant of claim 1 wherein the substituted ammonium nitrate comprises from 40 to 80 weight percent of the monopropellant.

6. The monopropellant of claim 5 wherein the substituted ammonium nitrate comprises from 60 to 80 weight percent of the monopropellant.

7. The monopropellant of claim 1 wherein ammonium nitrate comprises from 5 to 45 weight percent of the monopropellant.

8. The monopropellant of claim 7 wherein ammonium nitrate comprises from 5 to 20 weight percent of the monopropellant.

9. The monopropellant of claim 1 wherein water comprises from 5 to 30 weight percent of the monopropellant.

10. The monopropellant of claim 9 wherein water comprises from 5 to 20 weight percent of the monopropellant.

11. A liquid monopropellant consisting essentially of:

A. from about 60 to about 95 weight percent of a substituted ammonium nitrate which is methylammonium nitrate, dimethylammonium nitrate, trimethylammonium nitrate, ethylammonium nitrate, diethylammonium nitrate, n-propylammonium nitrate, isopropylammonium nitrate, ethanolammonium nitrate, diethanolammonium nitrate. triethanolammonium nitrate, or mixtures thereof; and

B. from about 5 to about 40 weight percent of water.

12. The liquid monopropellant of claim 11 wherein the substituted ammonium nitrate is methylammonium nitrate, ethylammonium nitrate, ethanolammonium nitrate, or mixtures thereof.

13. The liquid monopropellant of claim 12 wherein the substituted ammonium nitrate is methylammonium nitrate, ethylammonium nitrate, or mixtures thereof.

14. The liquid monopropellant of claim 13 wherein the substituted ammonium nitrate is ethylammonium nitrate.

15. The liquid monopropellant of claim 11 wherein the substituted ammonium nitrate comprises from 70 to 95 weight percent of the monopropellant.

16. The liquid monopropellant of claim 15 wherein the substituted ammonium nitrate comprises from 80 to 95 weight percent of the monopropellant.

17. The liquid monopropellant of claim 11 wherein water comprises from 5 to 30 weight percent of the liquid monopropellant.

18. The liquid monopropellant of claim 17 wherein water comprises from 5 to 20 weight percent of the monopropellant.