A fuel injector comprising: a flange for mounting the fuel injector to an outer sleeve of a combustion can of a gas turbine, a frame including a pair of opposite sidewalls and a pair of opposite endwalls, the frame having a first end proximal to the flange and a second end distal to the flange, the sidewalls and the endwalls having interior sides defining an opening for passage of a first fluid, wherein the sidewalls, or the endwalls, or the sidewalls and the endwalls are oriented at an angle with respect to the flange whereby the opening for passage of the first fluid converges from the second end to the first end; at least a first fuel injection body coupled to the frame and being positioned within the convergent opening such that flow paths for the first fluid are defined between the interior sides of the frame and the first fuel injection body, wherein the flow paths converge from the distal end to the proximal end so as to accelerate the flow, wherein the first fuel injection body defines therein a first fuel plenum and a first plurality of fuel injection holes in communication with the first fuel plenum along at least one outer surface of the first fuel injection body; a conduit fitting coupled to the frame and fluidly connected to the first fuel plenum; and an outlet member, the outlet member being in fluid communication with the fluid flow paths; and further wherein the outlet member defines a uniform cross-sectional area, the outlet member extending from the flange on a side opposite the frame; the cross-section of the first fuel injection body defining a teardrop shape, the teardrop shape having a curved leading edge, a trailing edge opposite the leading edge, and a pair of outer surfaces (346,348) between the leading edge and the trailing edge, at least one of the pair of outer surfaces being the at least one outer surface defining the first plurality of fuel injection holes. a flange for mounting the fuel injector to an outer sleeve of a combustion can of a gas turbine, a frame including a pair of opposite sidewalls and a pair of opposite endwalls, the frame having a first end proximal to the flange and a second end distal to the flange, the sidewalls and the endwalls having interior sides defining an opening for passage of a first fluid, wherein the sidewalls, or the endwalls, or the sidewalls and the endwalls are oriented at an angle with respect to the flange whereby the opening for passage of the first fluid converges from the second end to the first end; at least a first fuel injection body coupled to the frame and being positioned within the convergent opening such that flow paths for the first fluid are defined between the interior sides of the frame and the first fuel injection body, wherein the flow paths converge from the distal end to the proximal end so as to accelerate the flow, wherein the first fuel injection body defines therein a first fuel plenum and a first plurality of fuel injection holes in communication with the first fuel plenum along at least one outer surface of the first fuel injection body; a conduit fitting coupled to the frame and fluidly connected to the first fuel plenum; and an outlet member, the outlet member being in fluid communication with the fluid flow paths; and further wherein the outlet member defines a uniform cross-sectional area, the outlet member extending from the flange on a side opposite the frame; the cross-section of the first fuel injection body defining a teardrop shape, the teardrop shape having a curved leading edge, a trailing edge opposite the leading edge, and a pair of outer surfaces (346,348) between the leading edge and the trailing edge, at least one of the pair of outer surfaces being the at least one outer surface defining the first plurality of fuel injection holes.