Aircraft engine business, based on high technologies and scientific achievements, acts as a power-ful accelerator of development of other branches of industry. Certain developed western countries put this business in the list of so-called "critical technologies" which determine national security. In turn, to create an aircraft engine it is necessary to have a high level of fundamental and applied sci-ence, as well as high technologies in many other branches of industry. As of today, there are only two countries in the world - Russia and the USA - capable of creating state-of-the-art engines for any known application in civil and military aviation. There are many reasons to say that the aircraft engine business seriously affects political and economical security of a nation. One of the most im-portant issues for the Russian engine-makers has been their integration into the world's industry. There are several forms of international co-operation that have been tried: joint ventures, operations with shares of engine-building enterprises and work on contracts. So far, the process of integration has been going relatively fast between engine enterprises of Russia and the Ukraine. There are sev-eral important projects that the two countries carry out together, such as creation of the D-436, TV3-117SBM and D-27 engines.