M15.9 Lubricants And Fuels Flashcards
1
Q
Main purpose of oil in engines
A
- Lubricating
- Cooling
- Cleaning
- Corrosion protection
2
Q
Types of oil
A
- Synthetic
- Mineral
3
Q
Types of synthetic oil
A
1,2,3
4
Q
Type 1 synthetic oil
A
First gen, older engines
5
Q
Type 2 synthetic oil
A
Most common
6
Q
Type 3 synthetic oil
A
High thermal stability and viscosity at high temp (special aircraft )
7
Q
Oil pour point
A
Lowest temp that oil will visibly move in a 31.75mm tube horizontally for 5 seconds
8
Q
Flash point
A
Lowest temp that oil will give off enough vapour to flash when a flame is applied
9
Q
Types of jet fuel
A
- Jet A1
- Jet A
- Jet B
- JP5
10
Q
Flash and freeze point of Jet A1
A
Flash - 36C
Freeze - minus 47
11
Q
Flash and freeze point of Jet A
A
Flash - 38
Freeze minus 40
12
Q
Flash and freeze point of Jet B
A
Flash - minus 20
Freeze - minus 58
13
Q
Flash and freeze point of JP5
A
Flash - 65
Freeze - minus 48
14
Q
Density of Jet A1/A
A
0.81kg/litre
