Accession Number : ADD011951

Title :   An Improved Process for making Smoke Producing Composition.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Selzer,Joel H

Report Date : 09 Oct 1985

Pagination or Media Count : 9

Abstract : The XM819 projectile consists of a steel body having a tail cone assembly. The payload is a smoke producing charge of 28 wedge-like pellets of a red phosphorous composition which is expelled from the shell by a black powder charge having a pyrotechnic time fuze. Upon delivery down range a three round volley will produce an effective 90 to 150 meter smoke screen which will last 3.5 minutes. Each of the wedge-like pellets used in the payload is about 1 inch high and weighs between 42 and 44 grams. The composition of the pellets is composed of 79.5 parts by weight red phosphorus, 14 parts sodium nitrate, 3.25 parts epoxy resin, 3.25 parts curing agent, and 1.5 parts of a fumed silica. Due to the fact that the pellet is a new and unique submunition, a production process for its manufacture was not economically available. It is therefore an object of this invention to provide an improved process for making smoke producing pellets for use in the XM819 mortar shell.

Descriptors :   *PATENT APPLICATIONS, *SMOKE PROJECTILES, *MORTAR AMMUNITION, PELLETS, DISPERSING, TIME FUZES, SMOKE SCREENS, SUBMUNITIONS, FABRICATION

Subject Categories : Pyrotechnics

Distribution Statement : APPROVED FOR PUBLIC RELEASE