TY - JOUR
AU - Ryabova, D.
AB - SERVICE PROPERTIES OF FUELS AND OILS MECHANICAL STABILITY OF POLYMER-THICKENED OILS USED AS WORKING FLUIDS FOR HYDRAULIC SYSTEMS OF VARIABLE-PITCH MARINE PROPELLERS UDC 621.892:629.12.02.037 A. P. Firsov, P. P. Zaskal'ko, G. I. Kichkin, M. V. Kulikov. and D. V. Ryabova Variable-pitch propellers (VPP's) have come into wide use on ships of various types, since they permit a re- versa1 of the ship's course without changing the direction of screw rotation [1, 2]. Reversing is accomplished by turning the propeller blades by means of a hydraulic system' In the hydraulic system of a VPP, the working fluid is the medium transmitting pressure to the actuator pistons that turn the blades; this fluid also serves to lubricate the rubbing parts of the mechanical section of the engine. The operability of the hydraulic system of a VPP depends on its design characteristics and on the physica ! and chemical properties of the working fluid (lubricating oil). Over the range of operating temperatures from -5 to +70"C, the oil viscosity must be at least 32-34 cS, but not more than 2000-2100 cS. If the oil viscosity is below 32-34 cS, there may be jamming of the working screws in the pump or of 
TI - Mechanical stability of polymer-thickened oils used as working fluids for hydraulic systems of variable-pitch marine propellers
JO - Chemistry and Technology of Fuels and Oils
DO - 10.1007/BF00728981
DA - 2004-11-18
UR - https://www.deepdyve.com/lp/springer-journals/mechanical-stability-of-polymer-thickened-oils-used-as-working-fluids-hlUy417QLx
SP - 64
EP - 68
VL - 8
IS - 1
DP - DeepDyve
ER -