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A gas turbine engine combustor fuel-air mixer includes a body having a substantially annular venturi and a longitudinal axis therethrough, an upstream end, a downstream end, and an inner surface. A primary radial jet swirler upstream of the venturi includes a plurality of radially extending primary

A gas turbine engine combustor fuel-air mixer includes a body having a substantially annular venturi and a longitudinal axis therethrough, an upstream end, a downstream end, and an inner surface. A primary radial jet swirler upstream of the venturi includes a plurality of radially extending primary air jets circumferentially and downstream angled with respect to the longitudinal axis. A plurality of axial jets axially extend through the primary swirler air and are circumferentially disposed around the longitudinal axis. An exemplary embodiment of the fuel-air mixer further includes the axial jets and the inner surface of a throat of the venturi being radially located at a radius from the longitudinal axis. The axial jets are located in an insert mounted to an upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. At least some of the axial jets have jet centerlines that intersect primary swirler centerlines of corresponding ones of the primary air jets downstream of outlets of the primary air jets.

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What is claimed is: 1. A gas turbine engine combustor fuel-air mixer comprising: a body having a substantially annular venturi positioned therein, the venturi having a longitudinal axis therethrough and an upstream end, a downstream end, and an inner surface, a primary radial jet swirler upstream o

What is claimed is: 1. A gas turbine engine combustor fuel-air mixer comprising: a body having a substantially annular venturi positioned therein, the venturi having a longitudinal axis therethrough and an upstream end, a downstream end, and an inner surface, a primary radial jet swirler upstream of the venturi, the primary radial jet swirler including a plurality of radially extending primary air jets circumferentially and downstream angled with respect to the longitudinal axis, and a plurality of axial jets axially extending through the primary swirler air and circumferentially disposed around the longitudinal axis. 2. A fuel-air mixer as claimed in claim 1, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 3. A fuel-air mixer as claimed in claim 1, further comprising the axial jets having rectangular cross-sections. 4. A fuel-air mixer as claimed in claim 1, further comprising the axial jets located in an insert mounted to an upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 5. A fuel-air mixer as claimed in claim 4, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 6. A fuel-air mixer as claimed in claim 5, further comprising the axial jets having rectangular cross-sections. 7. A fuel-air mixer as claimed in claim 1, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 8. A fuel-air mixer as claimed in claim 7, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 9. A fuel-air mixer as claimed in claim 8, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 10. A fuel-air mixer as claimed in claim 9, further comprising the axial jets having rectangular cross-sections. 11. A fuel-air mixer as claimed in claim 8, further comprising the axial jets located in an insert mounted to an upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 12. A fuel-air mixer as claimed in claim 11, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 13. A fuel-air mixer as claimed in claim 12, further comprising the axial jets having rectangular cross-sections. 14. A fuel-air mixer as claimed in claim 1, further comprising: the primary radial jet swirler having a generally annular upstream portion and a conical downstream portion, the plurality of radially extending primary air jets being disposed through the conical downstream portion, and the axial jets being disposed through the upstream portion. 15. A fuel-air mixer as claimed in claim 14, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 16. A fuel-air mixer as claimed in claim 15, further comprising the axial jets having rectangular cross-sections. 17. A fuel-air mixer as claimed in claim 14, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 18. A fuel-air mixer as claimed in claim 17, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 19. A fuel-air mixer as claimed in claim 14, further comprising the axial jets located in an insert mounted to an upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 20. A fuel-air mixer as claimed in claim 19, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 21. A fuel-air mixer as claimed in claim 20, further comprising the axial jets having rectangular cross-sections. 22. A fuel-air mixer as claimed in claim 14, further comprising at least some of the axial jets having jet centerlines that intersect primary swirler centerlines of corresponding ones of the primary air jets downstream of outlets of the primary air jets. 23. A fuel-air mixer as claimed in claim 22, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 24. A fuel-air mixer as claimed in claim 23, further comprising the axial jets having rectangular cross-sections. 25. A fuel-air mixer as claimed in claim 22, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 26. A fuel-air mixer as claimed in claim 25, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 27. A fuel-air mixer as claimed in claim 22, further comprising the axial jets located in an insert mounted to an upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 28. A fuel-air mixer as claimed in claim 27, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 29. A fuel-air mixer as claimed in claim 28, further comprising the axial jets having rectangular cross-sections. 30. A fuel injector assembly comprising: a gas turbine engine combustor fuel-air mixer having a body with a substantially annular venturi positioned within the body, the venturi having a longitudinal axis therethrough and an upstream end, a downstream end, and an inner surface, a primary radial jet swirler upstream of the venturi, a fuel nozzle disposed in the annular upstream end of the primary radial jet swirler in alignment with the longitudinal axis, the primary radial jet swirler including a plurality of radially extending primary air jets circumferentially and downstream angled with respect to the longitudinal axis, and a plurality of axial jets axially extending through the primary swirler air and circumferentially disposed around the longitudinal axis. 31. An assembly as claimed in claim 30, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances from the longitudinal axis at a radius as measured from the longitudinal axis. 32. An assembly as claimed in claim 31, further comprising the axial jets having rectangular cross-sections. 33. An assembly as claimed in claim 31, further comprising the axial jets located in an insert radially located between the fuel nozzle and the upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 34. An assembly as claimed in claim 33, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances at a radius as measured from the longitudinal axis. 35. An assembly as claimed in claim 34, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 36. An assembly as claimed in claim 35, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 37. An assembly as claimed in claim 36, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances at a radius as measured from the longitudinal axis. 38. An assembly as claimed in claim 30, further comprising: the primary radial jet swirler having a generally annular upstream portion and a conical downstream portion, the plurality of radially extending primary air jets being disposed through the conical downstream portion, and the axial jets being disposed through the upstream portion. 39. An assembly as claimed in claim 38, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances at a radius as measured from the longitudinal axis. 40. An assembly as claimed in claim 39, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 41. An assembly as claimed in claim 40, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 42. An assembly as claimed in claim 38, further comprising the axial jets located in an insert radially located between the fuel nozzle and the upstream portion of the primary radial jet swirler and axially forward of the plurality of radially extending primary air jets. 43. An assembly as claimed in claim 42, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances at a radius as measured from the longitudinal axis. 44. An assembly as claimed in claim 43, further comprising a secondary air swirler downstream of the primary radial jet swirler and circumferentially disposed about and radially spaced apart from the venturi. 45. An assembly as claimed in claim 44, further comprising the secondary air swirler having a plurality of secondary swirler vanes disposed between the venturi and a spaced apart bellmouth-shaped fairing. 46. An assembly as claimed in claim 45, further comprising the axial jets and the inner surface of a throat of the venturi being radially located at about equal distances at a radius as measured from the longitudinal axis.