GE Aircraft Engines is planning to introduce a modified GE90 combustion system from mid-1997, designed to reduce manufacturing costs, emissions and weight. The only physical change is a redesigned manifold, while alterations to the fuel-nozzle system have been achieved through software modifications.
"We have simplified the [double annular] combustor and changed the way it is fuelled through the outer nozzles," says GE. The result is a weight reduction of around 28kg per engine, and a "sharp reduction in hydrocarbons and nitrogen oxides".
Source: Flight International
