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M15 vid > 15.09 > Flashcards

15.09 Flashcards

1
Q

Where are mineral oils used

A

On piston type engines

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2
Q

Are synthetic oils be storage stable

A

NO

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3
Q

What is the viscosity index?

A

Effect temperature has on the viscosity of the oil.

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4
Q

What is an alternative fuel type for Jet A1

A

Jet B

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5
Q

What must you do if to ingest synthetic oil

A

Drink 250m of water and get medical help

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6
Q

What is created during refuelling

A

Electric static charge

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7
Q

What is the American name for Jet A1 fuel

A

JP 1A

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8
Q

What is free point for jet A1 fuel

A

-47C

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9
Q

What are type 3 synthetic oils

A

They have higher thermal stability and viscosity at high temperatures.

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10
Q

What is the most common fuel type used in America

A

Jet A

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11
Q

What is the freeze point jet a fuel

A

-40C

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12
Q

What do category two fuel tanks have

A

Direct access door and wide enough to gain access

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13
Q

What are the four types of turbine engine fuel

A

Jet A1
Jet A
Jet B
JP5

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14
Q

Typical fuel will be composed of what

A

16% hydrogen and 84% carbon and small impurities

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15
Q

What do category one fuel tanks have

A

Direct door access , but you cant get in completely

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16
Q

What do category three fuel tanks have

A

No direct external access door, internal opening

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17
Q

What are Type 2 synthetic oils

A

Used on modern GTE

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18
Q

How is fire created

A

Oxygen,heat ,fuel

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19
Q

What doe anti oxidants prevent

A

The formation of gum deposits

20
Q

What is rubber swelling

A

Amount of oil that can cause rubber to swell

21
Q

What type of fuel must be recorded when refuelling

A

JP5

22
Q

What is the fuel density of Jet A1 and Jet A fuel at 15 degrees C

A

0.81kg/lhr

23
Q

How many types of synthetic oils are there and what are they called

A

There are 3 type,

Type 1
Type 2
Type 3

24
Q

What are the two types of military fuel type

A

JP 4 and JP5

25
Q

What are Type 1 synthetic oils

A

First Generation, used on older gas turbine engines

26
Q

What does acidity measures

A

The corrosive tendencies of the oil

27
Q

Where are synthetic oils used

A

On jet engines

28
Q

What are category four fuel tanks

A

Only via internal openings

To get out of these tanks mechanical cutters must be used

29
Q

What type of oil was used in the earlier gas turbine engine development

A

Mineral oil

30
Q

What is the disadvantage of synthetic oils

A

High price 💰💰💰

31
Q

What material is used to protect sparks

A

Cotton

32
Q

What is the main task of oil on jet engines

A

Lubricating
Cooling
Cleaning
Corrosion protection

33
Q

What should the appearance of fuel be

A

Clear,bright & free from solid matter

34
Q

What is oil foaming

A

The measure of the resistance of oil to separate from entrapped air

35
Q

Why was synthetic oils developed for gas turbine engines

A

As they have better properties

36
Q

What can fuel handling safety procedures be divided into

A

Fire prevention
Fire extinguishing
Personnel safety

37
Q

What type of synthetic oil would you use on special aircrafts such as the Eurofighter.✈️

A

Type 3

38
Q

What is the pour point

A

The lowest temperature that oil will visibly move in a 31.75mm test tube held horizontally for 5 seconds

39
Q

What is the minimum flash point for Jet A1 fuel

A

38 degrees C or 100F

40
Q

What is the most common fuel type used in Europe

A

Jet A1

41
Q

Where does fuel vapour mainly come from

A

Fuel vent tanks or fuel leakes

42
Q

What is the advantage of synthetic oils

A

Better:
Velocity
Thermal stability
High pressure resistance

43
Q

Can you mix synthetic oils with other synthetic oils from other manufacturer even if they are the same type

A

NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

44
Q

What should the freezing point of fuel for turbine engines should be below

A

-40C

45
Q

In what fuel type would you use kerosene

A

Jet A

Jet A1

46
Q

What type of fuel type is used on military aircrafts

A

JP5

47
Q

What is coking

A

Amount of carbon residue remaining in the oil after being subjected to extreme heating

M15 vid (15 decks)

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