Monday, April 11, 2011

Know the aircraft fuel



aviation gasoline (AVGAS) is the fuel of the kerosene fraction that is designed as a fuel for aircraft that use engines that have internal combustion Engine, piston machine or engine that works with the principle of reciprocal with the ignition / combustion. AVGAS is a mixture of components derived from crude oil with a synthetic hydrocarbon that certain additives in blending with the elements / chemicals such as tetraethyl lead, inhibitors and dyes in small quantities. This type of fuel has a very high octane rating specific to aircraft engine which has a high compression level. AVGAS performance is primarily determined by an anti-knock characteristics indicated by the octane number to a value below 100 and also the achievements of performance above 100. Level / grade AVGAS in principle determined by the octane rating that indicates the level of performance / fuel performance. AVGAS has a nature very volatile and highly flammable at normal temperatures. Therefore, procedures and equipment used in the safe handling of this product should be given serious attention. AVGAS must have a freezing point (freeze point) a maximum of -58 ° C and has a maximum sulfur content of 0.05% m / m. International standards for aircraft fuel is the British Standards Ministry of Defence, Defence Standard 91-90/latest issue (Aviation Gasoline 100/130), DERD 2485 and ASTM D 910, the Standard of Specification for Aviation Gasoline

While aviation kerosine is the fuel for the aircraft are already using turbine engine (turbojet, turbofan, or turboshaft). The more advanced turbine engines, aviation kerosine has been amended several times. The first type, Jet A, for example, is only suitable for early generation jet engine with the engine structure is still simple. The kind that's better than Jet A is Jet A-1 or commonly known as AVTUR (Aviation Turbine Fuel), this type of widely circulated and used commercial jet aircraft (either with the type of jet aircraft propulsion or propeller). In developed countries, kerosine Aviation Jet A-1 Jet B or given name is also popular with Avtag name. AVTUR is the fuel of the kerosene fraction that is designed as a fuel for aircraft using turbine engines or engine which has a combustion chamber external (External Combustion Engine). Performance / reliability AVTUR mainly determined by the characteristics of cleanliness, combustion, and its performance at low temperatures. Based on these specifications, AVTUR must meet the necessary requirements, like having a freezing point (freeze point) a maximum of -47 ° C and flash point (flash point) a minimum of 38 ° C (100 ° F).

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