Air Force Materials Report : Jp 8 And Aviation Fuels

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Air Force Materials Report: JP-8 and Aviation Fuels The United States Air Force exists to provide a service to the rest of the world. It’s a global service that extends out from the United States and touches every continent around the world. It has been used to bomb evil off of the face of the Earth, drop care to those in need, and transport the strongest fighting forces in existence around the globe. It is airpower. However, as refueling airmen like to say, “Without us, pilots are pedestrians.” (ONE) In other words, if it weren’t for the fuels that power the aircraft, the United States Air Force would grind to a disappointing halt. The fuel that powers nearly all United State Air Force aircraft is known as JP-8, or jet propellant-8. Jet…show more content…
Chemistry: Most aviation jet fuels are derived from Kerosene. Kerosene molecules can have varying numbers of carbons. It can have as little as 12 or as many as 15. This means the chemical formula can be anywhere from C_12 H_26 to C_15 H_32. (FOUR). From these basic chemical structures stem those that form JP-8, Jet-A, and other jet fuels. Jet-A is the lowest grade of fuel made from kerosene molecules. Typically available only in the United States to civilian aircraft, Jet-A varies from 8 to 16 carbon atoms per molecule. Jet-A1 fuel is nearly identical to Jet-A, except that it is manufactured to a higher standard as Jet-A, and is therefore available worldwide. Jet-A1 also contains between 8 and 16 carbon atoms per molecule. JP-8, also commonly known as NATO F-34 by other nations, is Jet-A1 with a package of additives specifically designed for military aircraft. These additives allow static dissipation, corrosion reduction, lubrication, anti-icing, and sometimes anti-oxidation and metal deactivation (FIVE). A majority of corrosion inhibition and lubrication in JP-8 is due to dilinoleic acid. Dilinoleic acid is a polar molecule. Its formula is C_36 〖H_64 O〗_4 (SIX). The polar groups found in dilinoleic acid naturally adhere to metal surfaces, such as those found in an aircraft engine. This creates a natural film between moving parts in the engine, thus increasing lubrication

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