In the design, modernization and further aircraft operation, the issue of bonding as a means of electromagnetic interference control from equipment and static electricity, lightning protection is given much attention. The relevance of this article lies in the need to understand and comply with the requirements of the standards of all parts of the research and production cycle of modernization of aircraft from enterprises that develop devices and equipment for aircraft to the design bureaus of aircraft repair plants. To ensure the normal operation of radio technical apparatus on aircraft, protection against interference is applied, that caused by electrostatic charges due to voltage ripples on the generator commutator and engine manifold or at the output of rectifiers, as well as due to magnetic fields generated by various electrical facilities and wires. Interference protection of aircraft onboard equipment from electromagnetic interference is achieved by carrying out special measures, including screening of conductors, harnesses of the aircraft electrical system and ignition system of power drive units, bonding of shielding coatings of conductors and harnesses, structural elements and aircraft units. Bonding is also carried out to protect against lightning strikes. The article analyzes the requirements of state and industry standards for bonding, as the main technical measure of lightning protection and electromagnetic interference control on aircraft. Careful selection of the requirements of the standards allows to properly conduct and control the bonding of aircraft. It helps to determine the division of responsibilities in the design, execution and control of the state of bonding.
The article analyzes the report documentation of the tests in which the Doppler radar trajectory measurement system MFTR–2100/40 and the muzzle velocity measurement system SL-520PE were used to determine the trajectory parameters of artillery armament. The purpose of the article is to provide proposals for standard methods of using Doppler radar systems of trajectory measurements when testing artillery armament and its ammunition. The proposals for these standard methods are based on the experience of using the MFTR–2100/40 radar system and the SL–520PE muzzle velocity measurement system during the tests of the latest specimens of artillery and ammunition and relate to typical Doppler radar systems. When choosing the position and mode of operation of such Doppler radar trajectory measurement systems, it is always necessary to take into account safety measures, instructions for their operation, technical features (capabilities) of radar systems specified in this article, considering the interference environment during firing (shot) of artillery armament and experiment (test) conditions. Placing typical Doppler radar systems when taking measurements in unplanned places is dangerous for the crew and measuring instruments and leads to partial or complete loss of measuring trajectory information and reduced measurement accuracy. Abovementioned proposals are offered to be taken into account when developing methods of trajectory measurements using typical Doppler radar systems during testing artillery armament and its ammunition. Methods of measurements using standard Doppler radar systems of trajectory measurements should be developed in accordance with current standards (GOST 8.010-99, GOST V 15.211-78 and others) for a particular test, taking into account the results of analysis of the characteristics of samples to be evaluated, measuring instruments used, conditions and locations of measurements.
The topical issue of providing aircraft with ground handling equipment of flights that would meet modern requirements of functional and quality indicators, international standards and prospects for the development of aircraft in the context of cooperation with NATO countries is considered. The results of the analysis of open literature sources on the possibilities of manufacturing means of ground maintenance of aircraft by the military-industrial complex of Ukraine are presented. The methodology of the system approach is aimed at the development of general requirements for ground-based power supply and start-up of aircraft engines. Analysis of trends in domestic and foreign models of ground handling equipment has determined that the problem of ensuring a given military-technical level of the fleet of military aircraft and helicopters is becoming more relevant every year, and work to create products and their components requires a comprehensive system approach. Methodical approaches to the development of general requirements for ground-based means of power supply of aircraft are presented. The practical significance of the obtained results lies in the possibility of their use to justify the decision to supply these samples of special-purpose ground handling equipment to the Armed Forces of Ukraine. In this regard, the main task of the military-industrial sector of Ukraine is to prepare the production of analogues of electric and gas equipment for ground handling of aircraft and helicopters and their harmonization with NATO standards.
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