Answer:
The major factor preventing widespread use of alternative jet fuels is currently the cost of production. Alternative jet fuels are often produced through more expensive and complex processes than traditional jet fuels, such as through the use of biomass or waste materials. Additionally, alternative jet fuels currently have lower economies of scale, as the demand for them is still relatively low. Fuel compatibility with modern engines and fuel stability are also important factors to consider, but significant progress has been made in addressing these issues through testing and certification processes. Octane rating is not a significant factor in jet fuel, as it is a rating used to measure the anti-knock properties of gasoline for use in spark-ignition engines, whereas jet engines use a different type of fuel and combustion process.
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