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US Patent 6843868 - Propellants and explosives with flouro-organic additives to improve energy release efficiency
US Patent Issued on January 18, 2005
Estimated Patent Expiration Date:
October 23, 2023Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 23, 2023Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA non-/low-toxic, non-hypergolic, propellant formulation generally comprising metal nanoparticles, such as boron, aluminum, or carbon, and one or more fluoro-polymers mixed in in particulate form. The present invention takes advantage of the increased surface area provided by nano-sized metallic particles to enhance the metal's combustion efficiency, or ignitability. The inclusion of fluoro-polymers also aids in increasing the combustion efficiency of the metallic nanoparticles due to the presence of halogenic oxidizers. The thermal degradation of a halogenated fluoro-polymer additive in the propellant combustion zone serves to release halogens, thereby improving the combustion of the metallic nanoparticles and increasing the propulsion system's energy output. The present invention's formulation is safe to store and handle, environmentally-friendly, and may be economically manufactured to provide for widespread, cost-effective use. | InventorsApplicationNo. 10691220 filed on 10/23/2003US Classes:149/19.3, Resin contains fluorine, bromine or iodine149/22, CONTAINING FREE BORON OR BINARY COMPOUNDS OF BORON (EXCEPT WITH OXYGEN) OR BORANES149/19.2, Including organometallic or organo (silicon/boron) compound149/5, Component base contains an inorganic explosive or inorganic thermic constituent149/6, Coating contains organic compound427/561, Pretreatment of coating supply or source outside of primary deposition zone or off site264/3.4, Forming or treating particulate material102/291, Rocket propellent grain149/40, Plural oxygen yielding compounds149/19.4, Polyurethane428/213, Thickness (relative or absolute)149/19.92, Process149/19.1, Organic material contains polysaccharide resin or synthetic resin149/2STRUCTURE OR ARRANGEMENT OF COMPONENT OR PRODUCTField of Search149/19.3, Resin contains fluorine, bromine or iodine149/22CONTAINING FREE BORON OR BINARY COMPOUNDS OF BORON (EXCEPT WITH OXYGEN) OR BORANESExaminersPrimary: Felton, AileenAttorney, Agent or FirmUS Patent References3266958, 3362860, 3865658, 3967989, High energy propellant compositions including vinyl decaborane-polyester copolymer binderIssued on: 07/06/1976 Inventor: 4017342, Method for improving metal combustion in solid rocket propellants Issued on: 04/12/1977 Inventor: Geisler , et al.4634479, Power source utilizing encapsulated lithium pellets and method of making such pellets Issued on: 01/06/1987 Inventor: Buford4758288, Encapsulated lithium granules and method of manufacture Issued on: 07/19/1988 Inventor: Versic5030301, Oxidizer coated metal fuels with means to prevent auto-ignition Issued on: 07/09/1991 Inventor: Stout, et al.5175022, Method of making oxidizer coated metal fuels Issued on: 12/29/1992 Inventor: Stout, et al.5565710, Process for manufacturing granular igniter Issued on: 10/15/1996 Inventor: Ochi, et al.5714711, Encapsulated propellant grain composition, method of preparation, article fabricated therefrom and method of fabrication Issued on: 02/03/1998 Inventor: Schumacher, et al.5717159, Lead-free precussion primer mixes based on metastable interstitial composite (MIC) technology Issued on: 02/10/1998 Inventor: Dixon, et al.5798480, High performance space motor solid propellants Issued on: 08/25/1998 Inventor: Willer, et al.5811725, Hybrid rocket propellants containing azo compounds Issued on: 09/22/1998 Inventor: Klager5912069, Metal nanolaminate composite Issued on: 06/15/1999 Inventor: Yializis, et al.6132536, Automated propellant blending Issued on: 10/17/2000 Inventor: Hohmann, et al.6197135, Enhanced energetic composites Issued on: 03/06/2001 Inventor: Monte, et al.6425966, Energetic plasticizer, and explosive and propellant composition containing same Issued on: 07/30/2002 Inventor: Highsmith, et al.6454886Composition and method for preparing oxidizer matrix containing dispersed metal particles Issued on: 09/24/2002 Inventor: Martin, et al. International ClassesC06B 4510C06B 4300 |
