GEOMETRIC MODELING METHOD THROWING FIRE FIGHTING

Abstract

A geometric model of the new fire extinguishing technology based on the hinged method of throwing as a means of delivering fire extinguishing substances to the combustion zone is presented. In this case, the extinguishing agent is placed in a special container, which should be destroyed by the temperature of the fire and release it. The proposed mechanics of delivering containers to the fire zone is significantly different from the known ones, where pneumatic guns or gravitational throwing machines of the trebuchet type are used. A feature of these methods throwing is the use of special “starting” technical devices designed to throw containers over a long distance. But such a technique is rarely used; during storage, preventive maintenance is not always carried out with it. Therefore, a pneumatic gun or trebuchet may fail, which will affect the timely start of a fire extinguishing. Therefore, the problem arose of developing a new fire extinguishing technology, for which the “starting” device would be as simple as possible for storage, and would not require significant efforts to maintain it in working condition. To implement the new technology, it is necessary to develop appropriate software. At the initial stage of research, this is done in the form of a geometric model. In this work, we simulated the process of delivery to a container in the form of two spaced loads connected by a weightless rod (abbreviated as dumbbells). Diversion of goods is a prerequisite for the mechanical implementation of new technology. The initiation of the movement of the dumbbell is due to the simultaneous action of two explosive pulses directed at each of its loads.To describe the dynamics of dumbbell motion, a Lagrangian is defined, and a system of three second-order Lagrange differential equations is compiled and solved. Examples of modeling the trajectories of the centers of mass of the weights of the dumbbell, as well as images of the individual phases of its rotation are given. The results obtained allow us to recommend the necessary values of explosive pulses, as well as to evaluate the distance of the flight of the dumbbell, depending on these values.