M15.09

Question 1

What did mineral oils lack in older engines?

Answer 1

Lack stability and very volatile at high temperatures

Question 2

What are the main tasks of engine oil?

Answer 2

Lubricating, cooling, cleaning, corrosion protection

Question 3

How does oil protect components?

Answer 3

Created protective film, prevents physical contact

Question 4

How does oil cool components in the engine?

Answer 4

Heat is transferred into the oil

Question 5

How does oil clean engine components?

Answer 5

Catches loose particles and carries them to filters

Question 6

Does oil protect from corrosion?

Answer 6

Yes

Question 7

What are the two types of oil?

Answer 7

Mineral, synthetic

Question 8

Where is mineral oil used?

Answer 8

Piston engines

Question 9

Where is synthetic oil used?

Answer 9

Jet engines

Question 10

What is type 1 oil?

Answer 10

First gen synthetic oil, used on older gas turbine engines

Question 11

Where is type 2 oil used?

Answer 11

Modern gas turbine engines

Question 12

What is type 3 oil?

Answer 12

Higher thermal stability and viscosity, used on special aircraft

Question 13

What are the advantages of synthetic oil?

Answer 13

Better viscosity , thermal stability, high pressure resistance

Question 14

What’s the main disadvantage of synthetic oil?

Answer 14

Very expensive

Question 15

Can different manufacture synthetic oils be mixed?

Answer 15

No

Question 16

What are the 4 types of turbine engine fuel?

Answer 16

Jet A1, Jet A, Jet B, JP 5

Question 17

What is the flash point and freeze point of Jet A1?

Answer 17

Flash point - 38 degrees
Freeze point - minuce 48 degrees

Question 18

What is the flash point and freeze point of Jet A?

Answer 18

Flash point - 38 degrees
Freeze point - minuce 40 degrees

Question 19

What is the flash point and freeze point of Jet B?

Answer 19

Flash point - minuce 20 degrees
Freeze point - minuce 58 degrees

Question 20

What is the flash point and freeze point of JP 5?

Answer 20

Flash point - 65 degrees
Freeze point - minuce 48 degrees

Question 21

What is a important characteristic with fuel?

Answer 21

Density

Question 22

What 3 sections can fuel handling safety be divided into?

Answer 22

Fire prevention, fire extinguishing, personnel safety

Question 23

Is refuelling allowed when the aircraft is running?

Answer 23

No

Question 24

Are electric static charges visible?

Answer 24

No

Question 25

For safety how many people are required for work in fuel tanks?

Answer 25

2 or more

Question 26

What is a category 4 tank with terms of entering it?

Answer 26

Not wide enough to rescue people in an emergency