Fuel and air injection system for annular combustion chamber of turbomachine of aircraft, has space allowing air flow to be mixed with fuel in system, and fuel injection unit with injection channels to inject one type of fuel in space

摘要

The system (24) has a fuel supplying unit with a U shaped conduit (40), an annular distribution cavity (48) and an annular conduit (62) that are associated with a fuel injector (26). The unit supplies one type of fuel e.g. kerosene, to the injector. An air flow discharge space (29) allows air flow to be mixed with the fuel in the injector, in the system. A fuel injection unit comprises a set of injection channels (64) to inject another type of fuel e.g. dihydrogen, in the space, where the latter type of fuel is more energetic than the former type of fuel.