MODELING DELIVERY OF EXTINGUISHING SUBSTANCES WITH THE USE OF CONTAINERS IN THE FORM OF A DUMBBELL

Abstract

         A geometric model of a new method of delivering a fire extinguishing agent to a fire zone located at a considerable distance is proposed. The delivery idea is based on a mechanical throwing operation. For this, a substance (for example, a fire extinguishing powder) is placed in a hard shell - a special container. After being delivered to the fire site by means of a starting device, the container must release the substance, which will help extinguish the fire. In the known method for the remote delivery of a fire extinguishing agent, an air gun with a cylindrical container is used. During delivery, the cylinder must rotate around its axis to ensure stability of movement. A special turbine is used to untwist the cylinder as it passes by the muzzle of the cannon. During the operation of the turbine, it becomes difficult to regulate the distribution of compressed air flows. In addition, you need to monitor the tightness of the pneumatic part of the gun. The new delivery method uses a two spaced cargo container similar to a sports dumbbell. The initiation of the dumbbell movement is carried out due to the simultaneous action of explosive impulses directed at each of its loads in a pre-calculated manner. The result is a rotational-translational movement of the container. To describe the dynamics of the dumbbell movement, a Lagrangian was determined, and a system of Lagrange differential equations of the second kind was compiled and solved. The examples of modeling the trajectories of the centers of mass of the dumbbell weights with allowance for air resistance are given. The proposed method is planned to be the basis for a new fire extinguishing technology. This is evidenced by a new scheme for launching a dumbbell using explosive impulses of charges from two squibs. The results obtained make it possible to estimate the values ​​of explosive impulses necessary for throwing, as well as to estimate the corresponding values ​​of the dumbbell delivery distances

         Key words: geometric modeling, dumbbell-like shape of the container, Lagrange equation of the second kind, rotational-translational motion of the container