Method of calculations and substantiation of requirements for engineering protection of critical infrastructure objects from UAVs with warheads

Abstract

Abstract. Aim of the study. The purpose of the work is to develop a methodology for calculations and substantiation of requirements for elements of engineering protection of key infrastructure objects (KIO) of the electric power and gas transportation systems of Ukraine against UAVs of the "Shahed" type. Methodology. The characteristics and design of the "Shahed" UAV were considered. It has been established that UAVs of the "Shahed-136" type pose the greatest danger, as they have the largest warhead. For large and/or key KIO structures, the case of a direct hit by a UAV is considered. The requirements for the arrangement are substantiated and a principled solution for the first-order circular engineering protection of the most important structures and equipment of KIO is proposed. It includes two layers: a protective screen and an impenetrable shell. The protective screen is designed to destroy the UAV or prematurely detonate its charge. The protective shell, from which the screen is located at some distance, is designed to retain debris and withstand the wave from the explosion. Findings. The method of calculations and substantiation of requirements for elements of engineering protection of OKIS was obtained. The sequence and analytical methods of calculations of both levels of protection are presented. When designing a protective screen, a concentrated impact from a UAV collision is calculated, and for a protective shell, shock wave pressure and debris permeability are calculated. Scientific innovation. The method of calculations and substantiation of requirements for elements of engineering protection of key infrastructure objects is proposed in the work for the first time. Practical value. A constructive solution was developed for the engineering protection of the process gas treatment plant against direct hits of the "Shahed-136" UAV using steel structures and sand filling. The procedure for carrying out work on the installation of the protection system is proposed.