Fuel injector for aircraft gas turbine - has swirl vanes to increase fuel flow at low engine speed and to reduce pollution

摘要

The fuel injector for an aircraft gas turbine consists of a front part (1) with a central bore (3) surrounded by vanes (6) which impart a swirling motion to the combustion air. The bore (3) fits over the outlet (11) of the middle section (12) which is provided with radial vanes (7) which impart a centripetal swirl to the air. The two flows of air come together in the combustion chamber swirling in opposite directions ensuring complete atomisation of the fuel. The air to fuel ratio is arranged to be correct for full power.