There are several types of fuel that can be used by aircraft depending on which kind of aircraft it is. For instance, Jets use diesel fuels while there are other aircrafts that use AV gas or Mogas. In this article, we will look at AV gas properties and benefits.
One of the main types of fuels is the Aviation gasoline or AV gas, which is mostly use on piston powered engines aircrafts. It one unique type of aircraft gasoline that has been in use for a long time. Aviation gasoline is essential in enhancing the functionality of piston engines. There are several additives that can be used on AV gas including static dissipaters, antiknock, tetraethyl, icing inhibitors, oxidation inhibitors, corrosion inhibitors, and metal deactivators.
At regular temperatures, Aviation gasoline is extremely volatile and highly flammable. Consequently, the gas ought to be handled carefully and properly. The two main types of ratings for AV gas are lean and rich mixture ratings which are the octane ratings that define the various grades of AV gas.
Gasoline fuels are mostly formed from hydrocarbons with the most popular being Iso-octane. Iso-octane has excellent antiknock properties. The fuels that possess similar antiknock properties to those of iso-octane are given a rating of 100. Heptane is another example of hydrocarbons which can also be applied to fuel octane rating once it is mixed with varying amounts of iso-octyne.
In recent times, lead additives, and other necessary additions result to a high engine power before detonation. This signifies that the incorporation of lead in aviation fuel essentially makes the engines to perform better. Another factor that helps to increase the power of an engine is the air ratio of the fuel.
Opposite to the beliefs of most people, is the fact that you need more than fuel with high octane ratings to increase the power of an engine. High octane ratings of fuel are mostly applicable in high compression engines for the reason that it is useful in interrupting the possible occurrence of knocking or detonation at settings of high power.
The other type of AV gas is the AV gas 100LL that contains low lead levels of at least 0.5 grams per liter of fuel. Additionally, there is the type of AV gas known as the AV gas 82UL which has no lead content and as such, it is most suitable for engines with low compression ratios.
In the past, there were various grades of AV gas but today they have been narrowed down to only one type, which is the AV 100.
While adding lead to aviation fuel might be good in enhancing the performance of an engine during combustion, unleaded fuels are recommended for reasons relating to health. However, lead pollution is mostly caused by the millions of cars that use lead fuel.