Most aircraft engines utilize either a wet sump or dry sump type of lubrication system. One of the primary differences between the two systems is the wet sump stores oil in the engine crankcase, while the dry sump uses an external oil tank mounted on or near the engine.
What are the types of lubricant in aircraft?
Aircraft lubricants typically contain the following groups of additives:
- Boundary lubrication additives (anti-wear, lubricity, and extreme pressure)
- Anti-corrosion additives.
- Anti-foaming additives.
- Metal deactivators.
- Viscosity index improvers.
What type of lubrication is best for the engine?
The most popular lubes are usually moly-based (Molybdenum Disulfide) and are designed to operate at high temperatures. Newer compounds are manufactured with additives that hold up better under extreme pressures and also act as rust inhibitors much like the compound Cosmoline.
What is aircraft lubrication?
Lubricants are used to reduce friction and wear, whether it’s in an aviation engine or the wheel bearing on a car. Other major functions of a lubricant include cleaning, cooling and sealing, in addition to helping fight corrosion and rust in the engine.
What are the 6 functions of lubricating oil?
There are 6 Basic Functions of a Lubricant/Oil.
- Lubrication – Provide a film between moving parts.
- Cooling – Heat transfer media.
- Sealing – Filling in uneven surfaces.
- Cleaning – Holding contaminants in suspension.
- Dampening & Cushioning – Of components under high stress.
- Protection – From oxidation & corrosion.
What are types of lubricants?
There are 4 types of lubricants: Oil, Grease, Penetrating Lubricants, and Dry Lubricants.
What is the main purpose of lubrication?
The primary purpose of lubrication is to reduce wear and heat between contacting surfaces in relative motion. While wear and heat cannot be completely eliminated, they can be reduced to negligible or acceptable levels.
Can you use white lithium grease for assembly?
White lithium grease (Lubriplate) is fine if you are going to fire it up right away, but let it sit for a few months, and it gets HARD and turns into stiff goo…. which is NOT something you want in your engine. It doesn’t dissolve and go away if it has sat too long, either.
What is lubricant example?
Common examples of internal lubricants include fatty alcohols, esters (low esterification), and EVA wax. External lubricants provide metal release and help reduce process temperature. Common examples of external lubricants include PE waxes, paraffin, metal soaps, esters (high esterification), amides, and fatty acids.
What is the most important lubricant property?
Viscosity is the most important physical property of a lubricant. How the viscosity of a fluid reacts to changes in temperature, pressure or speed determines how well a fluid can perform the basic functions of a lubricant.
What are the 5 functions of the lubrication system?
Its basic functions within an engine include reducing friction, cooling, sealing, cleaning, and serving as protection for moving parts.
What oil does early aircraft use?
The earliest piston engines were lubricated with either mineral oils or vegetable oils, particularly castor oil.