Experimental investigations of the underwater ignition of the solid rocket propellant

Abstract

While developing devices of raising drowned objects for creating Archimede force the following basic scheme-is suggested: pontoon (art envelope from a mild rubberized fabric) made connected with drowned object is filled with the products of combustion of a caseless, low temperature solid propellant gas generator When the level of filling, a volume of a pontoon is enough, the latter provides floating of the object. Reliable operation of these devices depends on a stable ignition of solid propellants in gas generators. Since in the devices of raising caseless gas-generator is used, ignition of the propellant in them is provided by means of nonhermetic system of ignition. It is constructively made as a through channel directly in a sample of a solid propellant. A spiral of incandescence is set in it. The spiral is made of a material with high ohmic resistance. Nickel chromium wire with a diameter of 0,5* 10 m was used. Laboratory experimental investigations of such a system of ignition have been carried out. Peculiarities of the process of ignition in water have been determined on transparent models of the channel taking into account heating of the spiral. An ignition of solid propellants with similar system has t>een investigated. Experimental results have been obtained.