A Compact, High Efficiency, Self-Cleaning Air Filtration System for a Vehicular Gas Turbine Engine
This paper describes the design and development of a innovative filtration system for a vehicular gas turbine engine that contains a high efficiency self-cleaning element and is integrated with the propulsion system for a tenfold increase in filter service interval, a 1/3 reduction in overall pressure loss and a 40 percent reduction in package size. The system consists of self-cleaning, rotating drum barrier filter surrounded by curved vortex tube precleaner panels and mounted directly to the engine inlet. A water tight external housing is provided to give the system the necessary deep water fording capability. The conceptual design is described as well as the detailed design of both precleaner element and the self-cleaning barrier filter. The full size prototype fabrication and testing is described to demonstrate operational integrity and cleanability.