# US 8,317,952 B2 · High performance electrically controlled solution solid propellant

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- Number: US 8,317,952 B2
- Document ID: US8317952B2
- Status: Granted
- Kind: B2
- Application number: 11/787,001
- Filed: 2007-04-13
- Published: 2012-05-03
- Granted: 2012-11-27
- Earliest claimed: 2006-04-13
- Assignees: Digital Solid State Propulsion, LLC
- Inventors: Arthur Katzakian; Charles Grix
- Web page: https://patentgrep.com/patent/US8317952B2

## CPC

- C06B 27/00: Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
- C06B 45/10: the organic component containing a resin
- C06B 45/105: {The resin being a polymer bearing energetic groups or containing a soluble organic explosive}
- C06B: EXPLOSIVES OR THERMIC COMPOSITIONS (blasting F42D); MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES (compounds in general C01, C07 or C08; {demolition agents based on cementitious or like materials C04B41/0009})

## Abstract

The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).

## Claims

### Claim 1

A method of controlling a propellant, the method comprising the steps of:
a. providing an electrically controlled propellant comprising:
i. a binder
ii. a hydroxylamine nitrate (HAN) based oxidizer;
iii. a dipyridyl complexing agent; and
b. cross-linking said binder with a boric acid cross-linking agent;
c. igniting said propellant by applying an electrical voltage; and
d. extinguishing said propellant by withdrawing said electrical voltage.

### Claim 2 (depends on 1)

The method of claim 1 further comprising the step of increasing the decomposition temperature of said propellant through the use of a 5-aminotetrazole stabilizer.

### Claim 3 (depends on 1)

The method of claim 1 wherein said binder is a co-polymer of PVA/PVAN.

### Claim 4 (depends on 3)

The method of claim 3 further comprising the step of increasing the decomposition temperature of said propellant through the use of a 5-aminotetrazole stabilizer.

### Claim 5 (depends on 3)

The method of claim 3 wherein said copolymer primarily comprises PVA.

### Claim 6 (depends on 5)

The method of claim 5 further comprising the step of dissolving said boric acid cross-linking agent in said HAN based oxidizer.

### Claim 7 (depends on 6)

The method of claim 6 further comprising the step of increasing the decomposition temperature of said propellant through the use of a 5-aminotetrazole stabilizer.