Distributed injection with fuel flexible micro-mixing injectors

An injector comprising:

• a first plurality of micro-mixing nozzles disposed in a circumferential array surrounding a main axis of the injector, wherein axes of the micro-mixing nozzles point radially inwardly with respect to the main axis;
• and
• a second plurality of micro-mixing nozzles disposed in a circumferential array surrounding the main axis of the injector and disposed interiorly of the first plurality of micro-mixing nozzles, wherein axes of the micro-mixing nozzles point radially outwardly with respect to the main axis.

A method for enhancing flame stability of a flame in a cavity of an injector, the method comprising:

• injecting a mixture of fuel and air from a first plurality of micro-mixing nozzles disposed in a circumferential array surrounding a main axis of the injector into the cavity, wherein axes of the micro-mixing nozzles point radially inwardly with respect to the main axis;
• and
• injecting a mixture of fuel and air from at least a second plurality of micro-mixing nozzles having axes thereof extending axially with respect to the main axis of the injector into the cavity.