Jet fuel is a specialized type of fuel designed for use in aircraft engines. It is primarily derived from crude oil and is formulated to provide the necessary energy for jet engines to operate efficiently. The most common types of jet fuel are Jet A and Jet A-1, which are used in commercial aviation. Jet fuel has a high energy density, meaning it can produce a lot of energy relative to its weight. This property is crucial for aircraft, as it allows them to carry enough fuel for long flights while maintaining a lighter overall weight. Additionally, jet fuel is designed to remain stable at high altitudes and low temperatures.