ADVANCE FLYING ACADEMY
Aircraft Lubrication Systems
Aircraft lubrication systems reduce friction, dissipate heat, and protect engine components from wear and tear. These systems ensure the smooth operation of piston and turbine engines, improving efficiency and longevity.
1. Functions of Aircraft Lubrication Systems
- Reduces friction between moving parts.
- Dissipates heat from engine components.
- Prevents corrosion by forming a protective oil film.
- Seals engine parts to prevent leaks and contamination.
- Cleans by carrying debris and contaminants to the oil filter.
2. Types of Aircraft Lubrication Systems
A. Wet Sump System
- Oil is stored in the engine crankcase (internal reservoir).
- Simpler and lighter, used in small piston aircraft (e.g., Cessna 172).
- Less cooling efficiency than dry sump systems.
B. Dry Sump System
- Oil is stored in an external tank instead of inside the engine.
- Uses pumps to circulate oil between the tank and engine.
- Better cooling and lubrication, used in high-performance aircraft (e.g., fighter jets, commercial jets).
3. Components of Aircraft Lubrication Systems
- Oil Reservoir (Sump or External Tank) – Stores oil for circulation.
- Oil Pumps (Pressure & Scavenge Pumps) – Circulate oil through the system.
- Oil Filters – Remove dirt and contaminants from the oil.
- Oil Coolers – Maintain proper oil temperature by dissipating excess heat.
- Oil Pressure & Temperature Sensors – Monitor lubrication system health.
4. Types of Aircraft Engine Oils
A. Mineral Oil
- Used in new or recently overhauled piston engines for break-in periods.
B. Ashless Dispersant (AD) Oil
- Used in piston aircraft engines to prevent sludge buildup.
C. Synthetic Oil
- Used in jet engines and turbine aircraft for high-temperature stability.
5. Lubrication System Monitoring & Maintenance
- Oil Pressure & Temperature Checks – Prevents engine damage from overheating or low lubrication.
- Regular Oil Changes – Ensures clean and efficient engine performance.
- Filter Inspection – Removes metal particles or contaminants that indicate engine wear.
Would you like details on a specific lubrication system or aircraft type?
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