Aerospace Fuel Systems
|Jet fuel is prone to solid particulate contamination, water and biological contamination. Removal of this contamination is critical to the reliable operation of onboard aircraft fuel systems.
Problems Caused by ContaminationMicroscopic examination of contamination found in used fuel filter elements
The fuel system can contain particulate, water and biological contamination, which can come from several sources:
- Block or erode nozzles and valves
- Cause wear of fuel system components
- Cause leakage (e.g. particles trapped under valves)
- Cause corrosion of fuel system components
- Foul sensors
- Gum together surfaces
- Cause fuel degradation
Note: A common mistake by operators when short filter life occurs is to install a coarser filter to extend filter element service life. However, the element was blocking because the fuel was contaminated thereby protecting downstream components from damage. A coarser filter will not provide the protection required, and will lead to more problems, such as component wear and ultimately, equipment failure.
Benefits of FiltrationSelecting the appropriate filtration solution will:
- Improve the operating reliability and performance of the fuel system
- Significantly reduce maintenance costs
- Extend component service life
Typical On-Board Filter Locations
- Main engine fuel filter located within the pump
- Wash flow filter for fuel control systems
- "Last Chance" filters upstream of critical valves, fuel controls, etc.
- Coarse screens downstream of transport pumps from fuel tank to engine
Filter SolutionsOn-board filtration products include:
- Filter Assembly
- Filter Element
- Differential Pressure Indicators/Switches
- Last Chance Filters
To determine the best product for your application, contact your local Pall sales representative at email@example.com
Technical Papers/StandardsMadhavan, P. (September 2004) "Filtration Technology for Aircraft Gas Turbine Engine Fuel and Lubrication Systems", Aircraft Technology and Maintenance, 2005 Engine Year Book
SAE Aerospace Recommended Practice (ARP) 1827 "Measuring Aircraft Gas Turbine Engine Fine Fuel Filter Element Performance"