Main Directions in Improvement of Hydraulic Cylinders Internal Surface Cleaning

Malfunction of aircraft liquid system units is substantially caused by impurity of their internal cavities. Hydraulic cylinders are the source and storage of contaminants. It is explained by existence of rubbing surfaces and by a low flow rate of working liquid via the unit. Cleaning of the hydraulic cylinder cavities by repeated relocations of the rod does not meet the modern requirements. Perspective way of intensification of unit cavity cleaning process is washing with pulsating single-phase flow of liquid. Existence of essential periodic components of pressure and flow of washing liquid considerably effects quality and duration of technological process. The main dependences describing dynamic properties of channels and cavities of the units, and also schemes of pulsating cleaning of hydraulic cylinders are presented in the work. For cleaning hydrounit cavities and hydraulic cylinders sensitive to pressure oscillations the gas-liquid method of cleaning based on use of low coefficient of gas compressibility has been offered