Hot gas control system

Ammunition and explosives – Powder form – Composite type

Patent

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Details

244 322, 102530, C06B 4500

Patent

active

048075299

ABSTRACT:
A hot gas control system includes a pressure vessel defining a chamber in which is disposed a body of solid propellant material that has a leading portion and a trailing portion. A first layer of the body of solid propellant material extends between the leading portion and an intermediate region of the body of solid propellant material, and a second layer extends between the intermediate region and the trailing portion of the body of solid propellant material. The first layer is composed of a first propellant composition that produces a relatively clean gas, and the second layer is composed of a second propellant composition that produces a relatively less clean gas. The body of solid propellant is arranged to burn within the chamber from the leading portion toward the trailing portion and thereby produce a quantity of gas that passes through an outlet port to a ducting path, the first layer having a thickness sufficient to produce enough relatively clean gas to preheat the ducting structure and thereby inhibit contaminant accumulation due to the withdrawal of heat from the less clean gas.

REFERENCES:
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patent: 4574700 (1986-03-01), Lewis
patent: 4594945 (1986-06-01), Alexandris
patent: 4627352 (1986-12-01), Brachert et al.

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