Bücher von Parakhat Matyakubova

Viscosity is a fundamental characteristic property of all liquids. When a liquid flows, it has an internal resistance to flow. Viscosity is a measure of this resistance to flow or shear. Viscosity can also be termed as a drag force and is a measure of the frictional properties of the fluid. Viscosity is a function of temperature and pressure. Although the viscosities of both liquids and gases change with temperature and pressure, they affect the viscosity in a different manner. In this book, we will deal primarily with viscosity of liquids and its change as a function of temperature.

The flight safety of civil aircraft (AC) has always been one of the main problems for aviation. With an increase in the mass character, the intensity of aircraft operation, and an increase in their passenger capacity, the requirements for flight safety, and the safety of life of passengers and crew members have increased significantly. At present, any aviation accident becomes a subject of discussion in the media, each aircraft accident is a national disaster and receives a wide public outcry. The state of flight safety largely affects social tension in society and the economic performance of aircraft operations. Therefore, all participants influencing the state of flight safety are obliged to take the necessary measures.