Keyword: «reliability»

The article discusses the typical failures of units and systems of electrical equipment of helicopters, the factors affecting their manifestation.

The article reveals the main sources of failures of aviation equipment, measures to identify malfunctions and prevent aviation incidents, prerequisites for aviation incidents.

This article discusses the seasonal fluctuation of the pipe of the underwater passage of the main gas pipeline on the section of the Khatasskaya channel of the Lena River, during the re-formation of the main channel.Special attention is paid to the section of the coastal slope where seasonal exogenous processes occur in the form of frost heaving and thawing of the soil, which directly affect the stress-strain state of the main gas pipeline. The choice of the left bank is directly related to the fact that the layer of seasonal freezing, starting from the near-rim plot, interlocks with the zone of permafrost soils. To determine the seasonal fluctuations of the two lines of the main gas pipeline, the method of surveying the planned-high-altitude position of the pipeline was used. It is noted, that oscillations can reach up to two meters vertically, seasonally moving horizontally to the channel of the Khatasskaya channel.

Scientific basics of computation and experimental justification of strength, life-time, reliability and safety of the main oil pipelines in complicated climatic conditions are considered; the main factors of increase of danger at achievement of dangerous limit states are given. The order and orientation of standard and non-standard laboratory researches of basic mechanical properties are characterized. The keying equations and their parameters for a final estimation of safety and risks by strength and deformation criteria which depend on time of an service loading and its cyclic mode are given.

The article presents the need to use modern innovative approaches and mechanisms to evaluate the activities of commercial companies. It is revealed and justified that the use of modified methods for diagnosing the financial condition of the company will allow us to form a general concept that will fit all the analytical issues necessary for making managerial decisions in conditions of uncertainty.