A description of the development of the technology for obtaining parts of the hot path of gas turbine engines by the method of directed crystallization from superalloys are considered. The analysis of the existing specialized equipment used in Russia, the USA, Germany and other countries to produce blades with a directional and monocrystalline structure is carried out. The prospects of the method of directed crystallization with a liquid-metal cooler in the production of gas turbine engine blades for both modern and promising gas turbine engines are clearly demonstrated.

A comprehensive study of a membrane made of corrosion-resistant heat-resistant steel 30H13 was carried out in order to identify the causes of loss of elastic properties. The structure was evaluated, the chemical composition, the structure of the surface and the fracture of the part were studied using optical and electron microscopy, chemical analysis and non-destructive testing. It was found that during the production process, the membrane was subjected to high-temperature heating, causing grain growth (normalization), as well as prolonged electropolishing, leading to the identification of grain boundaries and the development of corrosion processes.

Reducing warpage and residual stresses during hardening is an urgent problem in the production of parts and semi-finished products from aluminum alloys. Water is usually used as a cooling medium during quenching, and, for volumetric forgings, hot or boiling water, depending on the composition of the alloy. However, water as a quenching medium has significant drawbacks: uneven (three-stage) cooling due to a change in the state of aggregation, sharpness of cooling and, accordingly, the creation of large warpage and residual stresses in the case of using cold water, an insufficient degree of reduction in warpage and residual stresses during cooling in hot water, low speed cooling and, accordingly, the deterioration of the properties of most alloys during quenching in boiling water. Discusses in detail various methods for reducing warping and residual stresses during hardening in parts made of high-strength aluminum alloys.

The current paper is the second part of the scientific and technical review of bismaleimide (BMI) resins chemistry. Shows the modification of bismaleimide binders with epoxy resins, benzoxazines, cyanate esters and thermoplastics. The most significant physical and thermomechanical properties of polymer matrices based on modified bismaleimide resins and their main advantages are considered. Modern approaches to the synthesis and processing of heat-resistant bismaleimide resins are described.

Article is devoted to the analysis of the elastomeric materials which are widely applied to manufacturing of sealing harness, which used in technological process of vacuum infusion when manufacturing polymeric composite materials (PCM). The schematic circuit of manufacturing of elastomeric sealing harness is given. The main processes of production of sealing harness as length elastomeric materials are described. The rubbers which are of interest for manufacturing of elastomeric pressurizing plaits are described. Recommendations about application of rubbers on the basis of different rubbers as bases for manufacturing elastomeric sealing harness are made.

Рresents the issues of corrosion of ceramic thermal barrier coatings caused by the molten mixture of calcium, magnesium, aluminium and silicon oxides (CMAS). The influence of structure of the thermal barrier coatings on CMAS-corrosion is examined. The faliure mechanisms of thermal-barrier coatings are discussed in detail. It has been determined that the primary cause of faliure is the difference in the coefficients of thermal expansion between the CMAS-penetrated layers and the rest of the thermal barrier system. Different methods of testing the effects of CMAS-corrosion on thermal barrier coatings are reviewed.

Due to the increase in application of PСM in designs of aviation engineering there is use question protection against lightnings. In article requirements to protection against lightnings, applied in airplanes are provided. Different ways of increase in conductivity of PСM, including at the expense of implementation of metal grid or foil, their advantage and shortcomings are considered. The main developers and producers of materials for protection against lightnings are specified. The overview of works of Research Center «Kurchatovsky institute» ‒ VIAM directed on development protection against lightnings for aircraft is provided.

Modern and promising blades of rotors and tail rotors of helicopters are almost entirely made of polymer composite materials. All these structures are extremely sensitive to operational damage, which can not only appear for a variety of reasons, but are also poorly detected visually from the outside, even with large areas of delamination and cracking of the base material. To solve the problems of detecting and measuring the size of operational damage, the selection of optimal options for non-destructive testing methods for each type of structure was made, the features of their application were studied, and the optimal settings and control modes were selected.

When studying the thermophysical properties of new materials, it is often necessary to measure composite samples consisting of a coated substrate. In this paper, we consider a technique for measuring the thermal conductivity of a sample located between two substrate disks using a three-layer model. The influence of thermal resistance between layers on the measurement results is analyzed. It is shown that the application of silicone oil and graphite lubricant reduces the measurement error by up to 40 % compared with the use of pure metal-to-metal contact.

Various standards for determining the glass transition temperature by dynamic mechanical analysis and the dependence of the dynamic modulus of elasticity on temperature are considered. Two melt-type epoxy binders with similar values of glass transition temperature, but different nature of the drop in the dynamic modulus of elasticity upon heating, were selected. Samples were made, a tensile test was carried out, after which the polymer matrices were evaluated using various standards and the results were compared.

The literature data analysis in the field of biocides for protection the polymeric materials aircraft products from biodegradation has been carried out. General definitions of biocides, their characteristics, mechanisms of action, scopes are considered. Examples of complex reagents to prevent the growth of bacteria and microfungi are given, chemicals that enhance the main action of biocides are listed. The article focuses on the problem of acquiring the resistance of microorganisms to the biocides action.

Describes the stages of biodegradation in the environment of synthetic hydrocarbons having a polymeric structure. Special attention is paid to the selection of bacterial strains and nutrient media for testing the relevant materials in the laboratory. The role of microorganisms in the production of enzyme preparations is shown, indicating the classes of enzymes that are functionally significant in the processes of destruction of materials. Information about the parameters and conditions of laboratory experiments involving bacterial strains, which are assumed to have a biodestructor phenotype, is presented.