5.1 Characteristics & Contamination Flashcards
JP-5 is a _________ based fuel.
kerosene
What is Specific Gravity?
The difference between the weights of two equal volumes of material.
What is Flash Point?
The lowest temperature at which vapors rising from JP-5 will ignite.
What is Volatility?
The rate that JP-5 will change from a liquid to a gaseous state (vapors).
What is Viscosity?
The resistance to flow.
* the viscosity of JP-5 is low
What is Freezing Point?
The point at which hydrocarbon crystals appear.
* The freezing point of JP-5 is -51°F
What are the two classes of contamination?
- ) Chemical contamination
2. ) Material contamination
What is Commingling?
The mixing of two different types of petroleum products, such as JP-5 and JP-4.
What is the most serious type of contamination?
Commingling
What is the most common contaminate?
Water
What are Emulsions?
Liquids suspended in other liquids
What is the most common particulate contamination?
Rust
What are the two categories of particulate matter?
- ) course matter (greater than 10 microns)
2. ) fine matter (10 microns or less)
Is coarse matter visible to the naked eye?
Yes
* It is easily seen and removed from the fuel through filtration.
Is fine matter visible to the naked eye?
No
* Gross contamination of fine matter will scatter flashes of light and may appear as a slight haze in the fuel. It can be removed through filter ration and purification.
