Accession Number : ADD015013

Title :   Bonding Agents for the Thermite Compositions.

Descriptive Note : Patent, Filed 10 Jan 89, patented 30 Jul 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Covino, Josephine

Report Date : 30 Jul 1991

Pagination or Media Count : 3

Abstract : It is an object of this invention to provide a mixture for use in melting and venting ordnance case sidewalls before the motor propellant grain autoignites in response to a fuel fire. It is a further object of this invention to provide a mixture that has an autoignition temperature above the maximum temperature expected at the motor sidewall during normal operation while assuring proper autoignition and subsequent case sidewall melting and venting before the motor propellant detonates in response to the heat of fuel fires. It is a further object of this invention to provide a simple, low cost mixture for increasing the density, tensile strength and elasticity of pressed thermite pellets. This invention provides an aluminothermic mixture having a predetermined temperature of autoignition lower than the temperature of ignition of the rocket propellant so that it will ignite during aircraft fuel fire while remaining stable during normal operating temperature of the rocket propellant, being very energetic, having high elasticity and tensile strength, and having improved density when pressed into a desired shape.

Descriptors :   AIRCRAFT FIRES, AUTOIGNITION, AVIATION FUELS, BONDING, CHEMICAL AGENTS, ELASTIC PROPERTIES, FIRES, FUELS, IGNITION, LOW COSTS, MIXTURES, MOTORS, OPERATION, ORDNANCE, PROPELLANT GRAINS, PROPELLANTS, ROCKET PROPELLANTS, TEMPERATURE, TENSILE STRENGTH, VENTING

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE