WHY is kerosene used as an aviation fuel instead of gasoline?

Compared to gasoline, kerosene consists of heavier hydrocarbons, so it is denser and contains 5% more energy. Diesel fuel has an even higher energy density, but because of the heavy molecules it already thickens at -25 °C, and it can be colder in the fuel tanks during the flight.

Furthermore, kerosene is less flammable than gasoline, since the latter has a lower ignition temperature. Due to its low boiling point, gasoline can form gas bubbles when heated, disrupting the fuel system. Finally, kerosene has lubricating properties and tends to be somewhat cheaper than gasoline.

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