Yagodnikov

pp. 29-40

pp. 12-25

pp. 161-170

pp. 141-154

pp. 330-344

pp. 452-462

Application of metal additives to fuels and to pyrotechnic structures (PS) allows us to improve power characteristics both of traditional ramjet (RJ) schemes, and of combined RJ and to realize performance limits for high-metallized PS. It is obvious that advanced designs of RJ using the PS are characterized by a broad range of changing operation conditions such as pressure, ratios of components, structure and quantity of the condensed phase of PS combustion products. Their influence on the main characteristics of the workflow ought to be known to use advantages of the metal-containing combustible as much as possible

The article deals with the problem of designing microwave diagnostic systems, which are used in multifactor stressful conditions and require multi-parameter optimization with involving various disciplines, such as thermodynamics, mechanics and electrodynamics. Complex assessment of mechanical and dielectric properties of materials for use as a load-bearing element and a matching element of the microwave path was carried out. Simulation of the unit was performed using the software HFSS – a CAD package for the electrodynamics modeling; the simulation resulted in the definition the optimal geometry of the waveguide for the particular conditions.

The results of thermodynamic, ballistic, physic-mathematical surveys of low-temperature, gas-generating, fast-burning fuels (LGFF) characteristics. These fuels are pyrotechnic type based on nitroguanidine, ammonium perchlorate and methenamine, proposed for systems to move elements of actuators (SMEA), in particular, for gas generators (GG), for systems to open-close the underwater missiles’ steering devices (SOCSD). There are strict requirements for reaction time of these devices; it leads to the necessity of LGFF with high burning rate usage. Twenty chemical combinations were considered as modifiers to increase the burning rate. Based on obtained characteristics for different kinds of modifiers, high efficiency LGFF was created. The fuel was tested in GG and SOCSD. The results of those tests completely meet the requirements.

This article deals with complex experimental research of electrophysical processes in liquid rocket engines. Subject for study of products of combustion flow process’ electrophysical characteristics is a model of liquid rocket engine, using ethanol as a fuel and gaseous oxygen as an oxidizing compound. Dependences of magnetic and electric intensity on LRE mode parameters were obtained. Resulting data could be used for the development of noncontact diagnostic system and disaster facilities of LRE in real time.

The authors consider parametric studies of different factors’ influence on the working process characteristics in the combustion chamber(CС) of rocket thruster (RT), which made it possible to formulate recommendations regarding operating regime optimization and CC sizes. The authors obtained calculation dependences of the coefficient of the consumable complex and parameters of the RDMT combustion chamber working process on influencing factors with the use of gaseous oxygen as oxidizer, and kerosene – as a combustible. The authors provide a comparative analysis of the results of using these two components under similar conditions, which made it possible to determine the influence of physical properties of the combustible component on the effectiveness of working process organization.

This article considers current problems in training high-qualified academic and teaching personnel. It is shown that early career-guidance is the first and one of the most important factors in further professional orientation. The authors show the latest statistical data on academic competition (Olympiad) among scholars “Step in future”, analyze advantages of students’ selection through pre-university training system. It is concluded that the best results and high motivation to professional choice and further training in University is the consequence of non-stop career-guidance workout with scholars, which allows to make a choice appropriate for all participants of educational process and correspondent with the demands of society and state.