Publisher : Books LLC, Wiki Series
Release : 2010-05
ISBN : 9781155691954
Language : En, Es, Fr & De
Book Description :
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 23. Chapters: Kerosene, Avgas, Jet fuel, Zip fuel, Aviation fuel, Aviation biofuel, Commercial Aviation Alternative Fuels Initiative, Microbial corrosion, JP-7, Aircraft fuel system, JP-8, Fuel System Icing Inhibitor, Blau gas, JP-5, JP-4, TH-dimer, JP-6, JPTS, JP-1. Excerpt: Avgas (aviation gasoline) is an aviation fuel used to power piston-engine aircraft. Avgas can be distinguished from mogas (motor gasoline), which is the everyday gasoline used in cars and some non-commercial light aircraft. Unlike mogas, avgas has added tetra-ethyl lead (TEL), a toxic substance used to enhance combustion stability. Avgas is used in aircraft that have piston or Wankel engines. Gas turbines are able to operate on avgas, but typically do not. Turbine and diesel engines are designed to use kerosene-based jet fuel. The main petroleum component used in blending avgas is alkylate, which is essentially a mixture of various isooctanes, and some refineries also use some reformate. Avgas has a density of 6.02 lb/U.S. gal at 15 C, or 0.721 kg/l, and this density is commonly used for weight and balance computation. Density increases to 6.40 lb/US gallon at -40 C, and decreases by about 0.5% per 5 C (9 F) increase in temperature. Avgas has an emission coefficient (or factor) of 18.355 pounds CO2 per U.S. gallon (2.1994 kg/l) or about 3.05 units of weight CO2 produced per unit weight of fuel used. Avgas has a lower and more uniform vapor pressure than automotive gasoline, which keeps it in the liquid state at high-altitude, preventing vapor lock. The particular mixtures in use today are the same as when they were first developed in the 1940s, and were used in airline and military aero engines with high levels of boost supercharging; notably the Rolls-Royce Merlin engine used in the Spitfire and Hurricane fighters, Mosquito fighter-bomber and Lancaster ...