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Why is kerosene chosen as aircraft fuel?

1 Answers

McGavin

07/29/25 8:57pm

Because gasoline is highly volatile with a low flash point, while diesel, despite having a high flash point, is only suitable for compression-ignition engines. In comparison, kerosene has high calorific value and good stability, making it the preferred choice for aircraft fuel. Here are some relevant introductions about aircraft fuel: 1. Preparation Method: It is mainly obtained through petroleum processing. A common requirement for all aviation fuel compositions is that they consist of pure hydrocarbon mixtures with only specialized additives. However, due to the varying properties of different hydrocarbons, there are certain restrictions on the content of certain hydrocarbons such as aromatics and olefins. Residual hydrocarbons in the fuel, such as oxygen-containing, sulfur-containing, nitrogen-containing organic compounds, and their combustion products, not only cause corrosion of metal components in the system but also pollute the atmosphere. Moreover, these compounds are easily oxidized and condensed into gums and sediments in the fuel, leading to fuel system blockages. These are generally considered undesirable components and are strictly limited in different ways in fuel standards. 2. Main Types: There are currently four types of jet fuel: kerosene-type RP-3 jet fuel, wide-cut-type RP-4 jet fuel, high-flash-point-type RP-5 jet fuel, and high-density-type RP-6 jet fuel.

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