What is the specific gravity (S.G.) of Jet A1 fuel?

The specific gravity (S.G.) of Jet A1 fuel is approximately 0.8. Specific gravity is a measure of the density of a substance compared to the density of water. Since Jet A1 fuel is a type of kerosene used in aviation, its density is less than that of water, which has a specific gravity of 1.

At a specific gravity of around 0.8, this indicates that Jet A1 fuel is lighter than water; hence, it will float on the surface if poured into water. This property is important in aviation fuel management and handling, as it affects how the fuel is stored and how spills are managed.

Understanding the specific gravity of Jet A1 is crucial for pilots, engineers, and personnel working with fuel systems, as it influences the fuel's behavior in various situations, including during fuel transfer, storage, and in-flight performance.