aviation gas的意思|示意

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Aviation gas, also known as avgas, is a specialized form of gasoline used to power piston-engine aircraft. The main difference between avgas and automobile gasoline is that avgas has a higher octane rating than regular gasoline, allowing pistons to run at higher compression ratios without pre-ignition. Avgas is also much more stable and contains fewer impurities, both of which reduce the risk of engine malfunction and failure.

Avgas is used in a wide range of piston-powered aircraft, from small trainers to large four-engine airliners. It is also used in some vintage warbirds, such as the P-51 Mustang, which requires an octane rating of 100 or higher. Avgas is usually available at airports and aircraft factories, and it can be purchased in either bulk drums or in 5-gallon containers.

Avgas typically has an octane rating of between 90 and 100, and it is available in several different grades. The two most common grades are Grade 80, which is used in most older aircraft, and Grade 100LL, which is used in many modern aircraft. Most aircraft engines are designed to run on one particular grade of avgas, so it is important to check the specifications before fueling up.

In addition to powering aircraft, avgas is also used in some other applications. Motorcycle and snowmobile engines, for example, require a high octane fuel that contains fewer impurities, and avgas is often used as a substitute. Avgas is also sometimes used to power model aircraft and in marine engines.

Although avgas has several advantages over regular automobile gasoline, it is typically more expensive. Additionally, the refueling process must be handled with extreme caution due to the flammable nature of the fuel.