GEOMETRIC MODELING OF A TREBUCHET DEVICE FOR DELIVERY OF FIRE EXTINGUISHING AGENT TO A FIRE

Abstract

The work is devoted to explaining the method of modeling the delivery of a fire extinguishing agent to a fire zone located at a considerable distance. In addition to forest fires, fires occur in areas with flammable and flammable substances, at airfield facilities, in warehouses and storage facilities of various enterprises.

Firefighting aircraft are designed to extinguish forest and other large-scale fires using fire extinguishing liquids and bombs. Remote fire extinguishing uses, in parallel with explosive shock waves, tracked fire engines that contain reservoirs of water, methods of supplying it under high pressure over a very significant distance.

The paper examines the feasibility of new developments of variants of a mechanical starting structure such as a trebuchet-type, with the help of which fire-extinguishing liquid can be delivered remotely to the site of a fire. The delivery idea is based on the mechanical operation of throwing. To do this, the substance (for example, fire extinguishing powder) is placed in a hard, fusible shell - a special spherical container. After delivering it with the help of a starting device to the fire site, the container must collapse. The substance released as a result will help extinguish the fire. The starting device is based on a mechanical trebuchet-type design.

This device was used for military purposes in ancient times. Two trebuchet options are considered. The first is the classic, “rocker” type. The peculiarity of this design is the ability to use the vehicle as a massive counterweight designed to give the container a spherical shape necessary for acceleration. The second option is considered a modification of the classic trebuchet, and in the literature is called Floating-Arm Trebuchet. The advantages of this version of the starting device include the ability to move the massive counterweight vertically downwards.

To simulate the action of these trebuchet options, systems of differential equations are compiled and examples of the results of their solutions are given.

Keywords: geometric modeling, mechanical trebuchet device, spherical container shape, Floating-Arm Trebuchet.