The proportions of fuel and oxidizer that will result in optimal combustion are known as a stoichiometric ratio. The optimal ratio is determined by finding the amount of air that will result in the products of the combustion reaction containing only water and carbon dioxide with no left over oxygen. A stoichiometric mixture of Jet A and air contains about 1.2% fuel by volume or partial pressure.
The ratio at which all available fuel is combined with oxygen during the combustion process. This theoretically ideal ratio produces minimum emissions, however maximum power is achieved at an AFR 10-15% richer than stoichiometric, while maximum efficiency is achieved at an AFR 3-5% leaner than stoichiometric (depending on many engine variables).
The ideal oxidizer-to-fuel ratio in the cathode reaction, wherein all of the oxidizer exactly reacts with all of the fuel. search