M15.09 Flashcards
What did mineral oils lack in older engines?
Lack stability and very volatile at high temperatures
What are the main tasks of engine oil?
Lubricating, cooling, cleaning, corrosion protection
How does oil protect components?
Created protective film, prevents physical contact
How does oil cool components in the engine?
Heat is transferred into the oil
How does oil clean engine components?
Catches loose particles and carries them to filters
Does oil protect from corrosion?
Yes
What are the two types of oil?
Mineral, synthetic
Where is mineral oil used?
Piston engines
Where is synthetic oil used?
Jet engines
What is type 1 oil?
First gen synthetic oil, used on older gas turbine engines
Where is type 2 oil used?
Modern gas turbine engines
What is type 3 oil?
Higher thermal stability and viscosity, used on special aircraft
What are the advantages of synthetic oil?
Better viscosity , thermal stability, high pressure resistance
What’s the main disadvantage of synthetic oil?
Very expensive
Can different manufacture synthetic oils be mixed?
No
What are the 4 types of turbine engine fuel?
Jet A1, Jet A, Jet B, JP 5
What is the flash point and freeze point of Jet A1?
Flash point - 38 degrees
Freeze point - minuce 48 degrees
What is the flash point and freeze point of Jet A?
Flash point - 38 degrees
Freeze point - minuce 40 degrees
What is the flash point and freeze point of Jet B?
Flash point - minuce 20 degrees
Freeze point - minuce 58 degrees
What is the flash point and freeze point of JP 5?
Flash point - 65 degrees
Freeze point - minuce 48 degrees
What is a important characteristic with fuel?
Density
What 3 sections can fuel handling safety be divided into?
Fire prevention, fire extinguishing, personnel safety
Is refuelling allowed when the aircraft is running?
No
Are electric static charges visible?
No
For safety how many people are required for work in fuel tanks?
2 or more
What is a category 4 tank with terms of entering it?
Not wide enough to rescue people in an emergency
