M15.9

Question 1

What are the tasks of engine oil?

Answer 1

Lubrication
Cooling
Cleaning
Corrosion protection

Question 2

What are the 3 types of synthetic oil?

Answer 2

Type 1
Type 2
Type 3

Question 3

What engines is type 1 synthetic oil used on?

Answer 3

Old engines

Question 4

What engines is type 2 synthetic oil used on?

Answer 4

Modern engines

Question 5

What type of a/c is type 3 synthetic oil used on and why?

Answer 5

Fighter jets because it has a higher thermal stability and viscosity at high temps

Question 6

What is the major benefit of using synthetic oil in turbine engines?

Answer 6

Thermal stability

Question 7

Why must opened cans of oil be disposed of?

Answer 7

Modern synthetic oils are hydroscopic

Question 8

What are the advantages of synthetic oil?

Answer 8

Viscosity
Thermal stability
Pressure resistance

Question 9

What are the disadvantages of synthetic oil?

Answer 9

Price
Skin irritation
Not always mixable

Question 10

What is viscosity index?

Answer 10

The effect temp has on the viscosity of the oil
(Higher the number least effect viscosity has on high temps)

Question 11

What is pour point?

Answer 11

Lowest temp oil will visibly move

Question 12

What is volatility?

Answer 12

The likeliness of oil to vaporise

Question 13

What is acidity?

Answer 13

How corrosive the oil is

Question 14

What is oil foaming?

Answer 14

The resistance of the oil to separate from entrapped air

Question 15

What is rubber swelling?

Answer 15

The amount of oil will cause a particular rubber compound to swell

Question 16

What is oxidation and thermal stability?

Answer 16

Ability for oil to resist the formation of hard carbon and sludge at high temps

Question 17

What is pressure?

Answer 17

The ability of oil to carry a load

Question 18

What is coking?

Answer 18

Amount of carbon residue in the oil after heating

Question 19

What is the most common fuel used in Europe?

Answer 19

Jet A1

Question 20

What is the most common fuel used in USA?

Answer 20

JP1 and JP1A

Question 21

Flash point and freezing point of jet A1 / JP1A?

Answer 21

Flash point = +38
Freezing point = -47

Question 22

Flash point and freezing point of jet A / JP1?

Answer 22

Flash point = +38
Freezing point = -40

Question 23

What fuel types is used on military a/c?

Answer 23

Jet B, JP4 and JP5

Question 24

Flash pony and freezing point of jet B / JP4?

Answer 24

Flash point = -20
Freezing point = -58

Question 25

Flash point and freezing point of JP5?

Answer 25

Flash point = +65
Freezing point = -48

Question 26

How does temp affect the weight of fuel?

Answer 26

Colder fuel more dense then hotter fuel

Question 27

What should you do if someone invests fuel?

Answer 27

Do not induce vomiting
Drink 1/2 pint of water

Question 28

What should be done If fuel gets in the eyes?

Answer 28

Flush with clean water

Question 29

What’s the problem with handling jet B fuel?

Answer 29

It’s high volatility makes it unstable

Question 30

When dealing with a fuel spillage what must you ensure?

Answer 30

It doesn’t enter the environment

Question 31

What are the requirements for fuel?

Answer 31

Low freezing point
Flash point low enough for good combustion but high enough for safe handling

Question 32

Erratic fuel consumptions can be a sign of what?

Answer 32

Large amounts of water in fuel

Question 33

What is a CAT 1 fuel tank?

Answer 33

A direct access door
(Head and shoulder only)

Question 34

What is a CAT2 tank?

Answer 34

Direct access door
(Complete body)

Question 35

What is a CAT 3 door?

Answer 35

No direct access has internal openings
(Wide enough for rescue)

Question 36

What is a CAT 4 tank?

Answer 36

Only entree via internal openings
(Not wide enough for rescue)