Hot gas control system

Ammunition and explosives – Powder form – Composite type


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244 322, 102530, C06B 4500




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.

patent: 3147710 (1964-09-01), Gluckstein
patent: 3165060 (1965-01-01), Braun et al.
patent: 3217651 (1965-11-01), Braun et al.
patent: 3427805 (1969-02-01), Osburn
patent: 3668872 (1972-06-01), Camp et al.
patent: 4042667 (1977-08-01), Ishiwata et al.
patent: 4248616 (1981-02-01), Seng et al.
patent: 4466352 (1984-08-01), Dalet et al.
patent: 4574700 (1986-03-01), Lewis
patent: 4594945 (1986-06-01), Alexandris
patent: 4627352 (1986-12-01), Brachert et al.


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