DEVELOPMENT OF MODELS OF POLYHEDRON CONTAINERS FOR DELIVERY OF FIRE-EXTINGUISHING SUBSTANCES

Abstract

Geometric models of containers for the delivery of extinguishing agents to a fire zone located at a considerable distance are proposed. The transportation technology 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 delivery to the fire site, the container must collapse and release a substance that will assist in extinguishing the fire. The existing method of remote delivery uses a container that is in the shape of a cylinder. In this case, a pneumatic gun is used as a launch pad. The difficulty lies in the fact that in order to ensure stability of motion during the flight, the cylinder must rotate around its axis. The starting impulse to such rotation when the barrel passes through the muzzle of the air gun is provided by compressed air flows that are difficult to commute.
 Therefore, it becomes necessary to develop new methods for the remote delivery of fire extinguishing agents to the fire zone by applying other principles of throwing. Among such methods, attention is drawn to the use of trebuchet mechanisms and impulse installations. In the case of using trebuchet mechanisms for containers, shapes close to spherical are chosen. For impulse installations (with squibs), it is advisable to use containers consisting of two spherical containers connected by a rod (like a sports dumbbell). In this case, the initiation of the rotational-translational movement of the dumbbell in the vertical plane is carried out due to the action of explosive impulses directed at each of its loads in a pre-calculated manner.
 For practical application of trebuchet mechanisms or impulse installations, it is necessary to develop container shell designs. To do this, you need to combine solutions to several problems with conflicting requirements. First, the construction of the dumbbell must be strong and withstand the starting forces and stresses of the flight phase. Secondly, the structure must ensure its instant destruction after delivery to the fire zone. And, thirdly, the design of the dumbbell should provide a convenient technology for filling containers with fire extinguishing agents. It is proposed to solve this problem using polyhedral bodies.