Selection Parameters for Hydraulic System Filters with a Comparison of Aircraft and Marine Applications

摘要

Hydraulic systems for ships and their filters have often been based on aircraft equipment and design practices. This paper compares the criteria for design and selection of filters for aircraft and ships. By considering important parameters, the designer can make a more intelligent choice in selecting filters for a particular application. Parameters discussed include filter location, essentiality and duration of operation, logistic support requirements, and maintenance philosophy, including costs. While most of the parameters for filter selection are similar for aircraft and ships there are important differences which must be considered. Dirt capacity requirements for military aircraft filters are generally inadequate for ship hydraulic systems as well as commercial aircraft. By considering the various design and maintenance requirements, improved filtration can be provided for ship hydraulic systems at lower life cycle costs than at present although initial costs may be slightly higher.