Aerospace Instrument-Making Annotation << Back MATHEMATICAL MODELING AND ANALYSIS OF NON-CHARACTERISTIC SIGNS OF FAILURE OF THE AGB-3K AIRCRAFT T.A. Zharova, A.P. Shishkin, V.N. Shchepka, D.Yu. Kurnikov, N.V. Kozyrev The article considers the possibility of mathematical modeling and analysis of failures of the AGB-3K air horizon, which are not specified in the instructions to the helicopter crew in order to improve the training of pilots for the occurrence of accidents in flight. Today, the achievements in various fields of science and technology are widely used in the aircraft industry, and air horizons are no exception. Advanced flight and navigation systems are installed on modern aircraft, but the need for such devices as the AGB-3K remains, because the newly created complexes may be unstable to the influence of external disturbing factors, such as the action of electromagnetic fields, the counteraction of electronic warfare in combat conditions, etc. Currently, the AGB-3K is installed on various modifications of Mi-8 and Mi-17 helicopters, as well as Yak-40, Il-62, Il-76, An-24, An-26 and an-32 aircraft, which occupy a significant part of the Russian air fleet. But AGB-3K is not trouble-free either. That is why the relevance of the study is due to the need to solve the problem of improving safety when performing flights using instruments. The developed mathematical model and software package allow you to analyze failures of the air horizon that are not described in the instructions to the helicopter crew. The authors studied the parameters of the nominal and emergency operation modes of AGB-3K. The work was performed using Matlab applications and Mathcad software for performing engineering calculations. The idea to conduct this study originated in military-scientifi c circle of students of branch VUNTS VVS "VVA" in Syzran in the process of studying the topics Electrical machines for the discipline Electrical and electronics, but the main conclusions were made after studying the discipline of Aviation equipment and flight - navigation complexes. As a result, a mathematical model of the pitch angle measurement channel was developed, which allows simulating failures in the signal chain of the AGB-3K air horizon, and a practical stand was created where you can observe and analyze these failures. Keywords: mathematical modeling, air horizon, selsin pair, flight and navigation complexes, flight safety, emergency operation modes of AGB-3K. DOI: 10.25791/aviakosmos.08.2020.1174 Pp. 42-50.