Multipoint injectors with standard envelope characteristics

A multipoint injector ring comprising:

• a) a distributor ring defining a central axis and having a fluid inlet and a plurality of swirlers in fluid communication with the fluid inlet for imparting swirl on fluid from the fluid inlet, wherein the swirlers are defined in a downstream surface of the distributor ring;
• and
• b) an orifice ring mounted to the distributor ring, the orifice ring defining a plurality of fluid outlets circumferentially spaced apart with respect to the central axis, wherein each fluid outlet is aligned downstream of a respective swirler for injecting swirling fluid from the swirlers in a downstream direction,
• wherein an air circuit is defined from the fluid inlet, through the swirlers to the fluid outlets, and further comprising a fuel circuit including a plurality of fuel swirl chambers defined in an upstream surface of the distributor ring for imparting swirl onto a flow of fuel passing therethrough, with a fuel outlet orifice in fluid communication with each respective fuel swirl chamber, each fuel outlet orifice passing through the distributor ring from the respective fuel swirl chamber to a downstream surface of the distributor ring, with each fuel outlet orifice aligned with a respective one of the swirlers of the air circuit for injecting a swirling flow of fuel and air for air-assisted injection of fuel.