The primary purpose of a lubricant is to reduce friction between moving parts. Because liquid lubricants or oils can be circulated readily, they are used universally in aircraft engines. In theory, fluid lubrication is based on the actual separation of the surfaces so that no metal-to-metal contact occurs. As long as the oil film remains unbroken, metallic friction is replaced by the internal fluid friction of the lubricant. Under ideal conditions, friction and wear are held to a minimum. Oil is generally pumped throughout the engine to all areas that require lubrication. Overcoming the friction of the moving parts of the engine consumes energy and creates unwanted heat. The reduction of friction during engine operation increases the overall potential power output. Engines are subjected to several types of friction.
- Principles of Engine Lubrication
- Requirements and Characteristics of Reciprocating Engine Lubricants (Part One)
- Requirements and Characteristics of Reciprocating Engine Lubricants (Part Two) Specific Gravity
- Reciprocating Engine Lubrication Systems
- Reciprocating Engine Lubrication Systems – Dry Sump Oil System
- Reciprocating Engine Lubrication Systems – Oil Tanks
- Reciprocating Engine Lubrication Systems – Oil Pumps
- Reciprocating Engine Lubrication Systems – Oil Filters
- Reciprocating Engine Lubrication Systems – Oil Pressure Regulating Valve
- Reciprocating Engine Lubrication Systems – Oil Pressure Gauge
- Reciprocating Engine Lubrication Systems – Oil Coolers
- Reciprocating Engine Lubrication Systems – Surge Protection Valves
- Reciprocating Engine Lubrication Systems – Airflow Controls
- Reciprocating Engine Lubrication Systems – Dry Sump Lubrication System Operation
- Reciprocating Engine Lubrication Systems – Wet-Sump Lubrication System Operation
- Lubrication System Maintenance Practices
- Recommendations for Changing Oil
- Requirements for Turbine Engine Lubricants
- Turbine Engine Lubrication Systems
- Turbine Lubrication System Components – Oil Tank
- Turbine Lubrication System Components – Oil Pump
- Turbine Lubrication System Components – Turbine Oil Filters
- Turbine Lubrication System Components – Oil Pressure Valves
- Turbine Lubrication System Components – Oil Jets
- Turbine Lubrication System Components – Lubrication System Instrumentation
- Turbine Lubrication System Components – Oil Coolers
- Pressure Systems
- Typical Dry-Sump Variable Pressure Lubrication System
- Turbine Engine Wet-Sump Lubrication System
- Turbine Engine Oil System Maintenance
- Reciprocating Engine Cooling Systems
- Reciprocating Engine Cooling System Maintenance
- Maintenance of Engine Cowling
- Engine Cylinder Cooling Fin Inspection
- Cylinder Baffle and Deflector System Inspection
- Cylinder Temperature Indicating Systems
- Turbine Engine Cooling
Flight Mechanic Recommends
Rod Machado's Private Pilot Handbook -Flight Literacy recommends Rod Machado's products because he takes what is normally dry and tedious and transforms it with his characteristic humor, helping to keep you engaged and to retain the information longer. (see all of Rod Machado's Products).