ECONOMIC AND ECOLOGICAL ASPECTS OF THE USE OF NEW CRYOGENIC AVIATION FUELS

Until recently, the high rates of aircraft engine engineering’s development were ensured by the technological solutions improvement and the desire to approximate as much as possible the ideal thermodynamic cycle of turbojet engines. The traditional fuel for turbojet engines is an aviation kerosene – Jet-A fuel group and their regional analogies. The traditional way of aircraft engines efficiency increasing is a raising of a temperature in front of the high-pressure turbine. New alloys and technologies allow to increase the aircraft engines efficiency to a certain level. Raising the temperature in the combustion chamber by 50 degrees increases the efficiency, which leads to a 5% reduction in fuel consumption. However, this approach is technology limited and does not provide innovative solutions. The aircraft engine engineering’s development tempo in the 21st century continues to accelerate. The main driver of such processes in recent years is the tightening of economic and environmental requirements. Many aircraft manufacturers are actively looking for ways to reach a new qualitative level in terms of turbojet engines economic efficiency and meeting strict environmental requirements. The paper considers the feasibility of using new cryogenic fuels in aircraft turbojet engines, and possible ways for aircraft industry successful development.

Positions of Boeing and Airbus in the global civil aircraft industry: comparative analysis

There is a duopoly in the global civil aircraft industry. The market for the production of passenger aircraft is mainly divided between companies such as Boeing and Airbus. This work describes the history of the creation and activities of both companies throughout their existence, as well as the trends in their activities today, related to external events. Competition between these companies is quite high and exists due to a number of certain factors. The results of this competition are the position of each of the companies in the market, which is reflected in their production and financial indicators and reflects the overall situation in the market for the production of civil aircraft. Also, this work allows us to identify future trends in the activities of these manufacturers, and, accordingly, the entire industry as a whole.

The Influence of Pd and Zr Co-Doping on the Microstructure and Oxidation Resistance of Aluminide Coatings on the CMSX-4 Nickel Superalloy

Pd + Zr co-doped aluminide coatings were deposited on the CMSX-4 nickel superalloy, widely used in the aircraft industry, in order to investigate their microstructure and improvement of oxidation resistance. Palladium was deposited by the electrochemical method, whereas zirconium and aluminum by the chemical vapor deposition (CVD) method. Coatings consist of two zones: the additive and the interdiffusion one. The additive zone contains β–(Ni,Pd)Al phase with some zirconium-rich precipitates close to the coating’s surface, whereas the interdiffusion zone consists of the same β–(Ni,Pd)Al phase with inclusions of refractory elements that diffused from the substrate, so called topologically closed-packed phases. Palladium dissolves in the β–NiAl phase and β–(Ni,Pd)Al phase is being formed. Pd + Zr co-doping improved the oxidation resistance of analysed coatings better than Pd mono-doping. Mechanisms responsible for this phenomenon and the synergistic effect of palladium and zirconium are discussed.

Tax incentives for R&D in the context of the development of fiscal space

The article deals with the main R&D expenditure based tax incentives such as tax credit and enhanced allowances in the context of the development of fiscal space due to their impact on innovative activities of loss-making, small and medium enterprises as well as startups. The author disclosed basic features of R&D expenditure based tax incentives in comparison with tax exemptions and accelerated depreciation. Cross-country comparisons in OECD revealed that it is often a case when SMEs and startups enjoy R&D tax credit and enhanced allowance with higher rates. In addition, they can also claim full reimbursement of unused tax benefits for R&D while large companies can only count on partial or even non-reimbursement of unused tax benefits and limited carry over period. Implied tax subsidy rates on R&D are analyzed through different OECD countries, as well as through enterprises different in size and profitability. In 2019 the largest R&D tax benefits were offered to profitable SMEs in France (ITSR was 43%) and Portugal (ITSR was 39%). The ITSR methodology is used to work out scenarios of introduction of R&D expenditure -based tax incentives in Ukraine. Calculation results are presented. The state of R&D tax incentives in Ukraine in the case of aircraft industry is analyzed. The introduction R&D expenditure -based tax incentives is argued as a replacement of tax exemptions which are currently used as a measure for R&D promotion in the aircraft industry in Ukraine in terms of improvement of R&D tax support efficiency and spur successful development of high value-added industries as an important prerequisite for the development of fiscal space in Ukraine.

Spillover Effects of Intellectual Property Protection in the Interwar Aircraft Industry

Can strengthening intellectual property (IP) protection for producers of one good affect innovation in other related goods? To answer this question, we exploit a unique policy experiment in the interwar military aircraft industry. Airframe designs had little IP protection before 1926, but changes passed by Congress in 1926 provided airframe manufacturers with enhanced property rights over new designs. We show that granting property rights to airframe producers increased innovation in airframes, but slowed innovation in aero-engines, a complementary good where there was no change in the availability of IP protection. We propose and test a simple theory that explains these patterns.

ESTABLISHMENT OF THE AIRCRAFT INDUSTRY IN UZBEKISTAN DURING THE SECOND WORLD WAR

The article deals with the issues of creation and use of aircraft of the type DC-3–PS-84–Li-2 during the war, which was produced in Tashkent.The Second World War showed the superiority and indispensability of aviation technology in the theatre of military operations. If during the First World War aircraft performed mainly auxiliary functions, then during the Second World War aviation became an independent type of military formations and performed a number of tactical tasks in combat conditions. Aviation was used to perform a wide range of tasks. And therefore, since the periods of the war, military aviation has become clearly divided into fighter, assault, airborne cargo and other types