АНАЛІЗ ШЛЯХІВ МОДЕРНІЗАЦІЇ ЛІТАКІВ АН-2 З УРАХУВАННЯМ ВИМОГ EASA ЩОДО CS 23 LEVEL 4 ТА ЗАБЕЗПЕЧЕННЯ ПЕРЕВЕЗЕННЯ 10–19 ПАСАЖИРІВ

Abstract

The article is devoted to the actual problem of modernization of the An-2 aircraft taking into account the EASA requirements for CS23 Level 4 to ensure the possibility of transporting 10–19 passengers. An overview of options for the modernization of the An-2 aircraft with replacement of engines and changing the design of the airframe has been carried out. An option to modernize the fleet of An-2 aircraft with the installation of a power plant that meets the requirements of the CS 23 Level 4 is proposed to ensure the possibility of transporting the number of passengers corresponding to the carrying capacity of the aircraft and the safety of passenger transportation. Options for the modernization of the An-2 type aircraft without or with minimal modification of the airframe, as well as options for the modification of the aircraft with the installation of a turboprop engines with a change of the airframe, have been considered. The advantages of using the modernization of the aircraft with its minimal modification have been characterized: they decrease the cost of maintenance of the power plant and fuel costs, engine maintenance in the field, as well as warm-up and start-up of the power plant are facilitated, and the aircraft dragin flight is reduced. It was established that the passengers capacity limits the transportation of passengers in new planes. Some completed improvement projects are listed: options for the modernization of the An-2 aircraft, options for modifying the airframe of the aircraft into a braced monoplane, options for a two-engine aircraft based on the An-2 airframe with one propeller, and options for the configuration of two engines under the cowling. Various schemes for installing two engines under the cowling: horizontally in a row, horizontally with downward displacement relative to the axis of the propeller, vertically in the plane of symmetry of the aircraft. Conclusions have been made about expediency of installing two turboprop engine with a single propeller drive instead of the existing power plant with a single piston engine to upgrade the An-2 type aircraft in service, and that it will allow to ensure the efficiency of passenger transportation in accordance with the existing requirements of the EASA CS 23 Level 4 and the maximum utilization of the aircraft