What type of fuel is primarily used in the F/A-18 E/F?

The F/A-18 E/F primarily uses JP-5 fuel, which is a kerosene-based fuel designed specifically for military jet aircraft. JP-5 has a high flash point compared to other fuels, making it safer for use on aircraft carriers where the risks associated with flammable materials must be minimized. This safety aspect is crucial because the F/A-18 is often operated from naval vessels, and any fuel used must enhance operational safety.

Additionally, JP-5 provides good performance characteristics at various altitudes and temperatures, ensuring the aircraft can operate effectively in diverse environments. Its formulation also helps to reduce the likelihood of icing and engine performance issues that might be experienced with fuels that have a lower flash point.

In contrast, the other options present fuels that are either not suitable for the specific requirements of military aircraft operations, like Avgas, which is primarily used in general aviation piston-engine aircraft, or have different flash points and compositions, such as JP-4 and Jet A, making them less ideal for carrier operations and the specific demands of the F/A-18 E/F.