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The phenomenon of separated flow hysteresis in the process of the streamlining the axial compressor of gas-turbine engines is considered. Generalised results of research on the occurrence of hysteresis in the aerodynamic performance of compressor grids and its influence on the performance of the bladed disks of compressors that operate in real conditions of periodic circular non-uniformity are demonstrated.

A new pattern of twin-engine power plant installation in an unmanned aerial vehicle of the conventional aerodynamic scheme is presented. Reasons for moments of harmful pitching and diving are identified and a method of elimination is suggested. Santrauka Pateikta nauja dviejų variklių patalpinimo schema bepiločiame orlaivyje, turinčiame normalią aerodinaminę schemą. Nustatytos pavojingų polinkio momentų priežastys bei pasiūlyti jų pašalinimo būdai.

The propeller, as a thruster, has been known for a very long time and has been the only possible mover in aviation for many years. The increase in flight speed, the emergence of jet, and then turbofan gas turbine engines significantly reduced the use of propellers. However, it should be noted that today the propeller has no competitors in terms of profitability at moderate flight speeds (M≤0.6, and in the case of coaxial counter-rotating fans, M≤0.8). Also, propellers 22. Lovska, A. (2018). Simulation of Loads on the Carrying Structure of an Articulated Flat Car in Combined Transportation. Interna-

Abstract. Training plays a crucial role in ensuring the development and implementation of international Standards and Recommended Practices in aviation activities. Considering the existing policies and practices, the experts agreed on seven principles that the pan-European training policy should follow: promoting training, developing competency-based training, establishing an aviation culture, fostering mutual recognition, anticipating needs, supporting competition in training, ensuring quality of training and establishing a partnership with non-ECAC States. The ICAO Training Institute (National Aviation University, Kiev, Ukraine) fully meets the membership criteria of the European ECAC Network of Training Organisations and is accepted as a member of the network. The key activities include negotiations on cooperation, quality improvement and experience exchange, coordination of training programmes, development of new training programmes and training materials and creation of the pool of non-mandatory training courses.