Most jet engines use kerosene-based fuels (commercial types include Jet A, Jet A-1, JP-5, etc.). Kerosene has the right volatility, energy density, low freezing point, and thermal stability for turbine engines — unlike petrol (gasoline) or diesel which are formulated for spark‑ignited or compression‑ignited piston engines. Aviation gasoline (avgas) is used in some piston‑engine aircraft, but not in turbine jet engines.
Jet fuel used in a jet engine is:
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