GAS GENERATOR FOR EXPELLING HALON REPLACEMENTS
First Claim
1. A quick burning gas generator characterized by the rapid production of a large amount of substantially solids-free nontoxic gas comprising a double base castable propellant composition formulated to produce a flexible solid gas generator having a burning rate of at least 0.2 inches per second or greater at 1000 psia and having a configuration sized and dimensionally positioned to enhance rapid burning of the gas generator.
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Accused Products
Abstract
A gas generator capable of quickly producing a large quantity of substantially solids-free nontoxic gas useful as a propellant in halon replacement fire suppression systems is provided. The double base castable propellant composition is formulated from a major amount of ammonium nitrate, a minor amount of nitrocellulose, at least one selected high energy nitrate ester plasticizer, a thermal scavenger, and at least one burning rate modification and control additive to achieve a burning rate of 0.2 inches per second or greater at 1000 psia. The burning rate is further enhanced by the configuration of the solid propellant, which is formed to have dimensions selected to enhance the burning rate. The gas generator composition and physical arrangement synergistically produce an optimally rapid burning rate.
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Citations
22 Claims
- 1. A quick burning gas generator characterized by the rapid production of a large amount of substantially solids-free nontoxic gas comprising a double base castable propellant composition formulated to produce a flexible solid gas generator having a burning rate of at least 0.2 inches per second or greater at 1000 psia and having a configuration sized and dimensionally positioned to enhance rapid burning of the gas generator.
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18. A castable solid double base propellant composition comprising 61.5% by weight ammonium nitrate, 10.0% by weight nitrocellulose, 24.3% by weight butanetriol trinitrate, 2.0% by weight triacetin, 0.9% by weight para-N-methylnitroaniline, 0.2% carbon and 1.1% bismuth oxide.
- 19. A clean, low temperature gas generator assembly capable of rapidly producing a balanced gas output in excess of 3 moles for each 100 grams of gas generator propellant composition comprising a plurality of axially extending concentric sleeve supports, each of said sleeve supports being mounted a selected radial distance apart and positioned concentrically to support a plurality of gas generator elements sized and positioned adjacent to a surface of each of said sleeve supports to substantially cover said sleeve support, wherein each said gas generator element comprises a flexible substantially rectangularly shaped solid propellant, wherein the longest dimension of the rectangle corresponds approximately to the largest circumference of a sleeve support, and said solid propellant forming said gas generator has a thickness and composition formulated to burn rapidly at a rate of at least 0.2 inches per second or greater at 1000 psia.
Specification