Composite rotor and vane assemblies with integral airfoils

摘要

A composite gas turbine engine structure includes a retention ring with airfoils mounted on, integral with, and extending radially away from retention ring. Retention ring includes annular composite plies, a circumferentially segmented airfoil ring including airfoil ring segments disposed around one of outer and inner circumferences of retention ring. Airfoil ring segments include annular bases and radially extending clockwise and counter-clockwise airfoil segments at clockwise and counter-clockwise ends of annular base. Composite airfoils include circumferentially adjacent ones of the clockwise and counter-clockwise airfoil segments. A flowpath shell circumferentially disposed around segmented airfoil ring traps annular bases between flowpath shell and retention ring. Composite airfoils airfoils extend through slots in flowpath shell. Plies may be wrapped in a single spiral made from a continuous composite tape. Slots may be circumferentially angled. Circumferentially adjacent ones of clockwise and counter-clockwise airfoil segments may be stitched together.

主权项

1. A composite gas turbine engine structure comprising:
an annular composite retention ring circumscribed about a centerline axis, composite airfoils mounted on and integral with and extending radially away from the retention ring, the retention ring including annular composite plies, a circumferentially segmented airfoil ring including airfoil ring segments disposed around one of an outer and inner circumferences of the retention ring, each of the airfoil ring segments including an annular base and radially extending clockwise and counter-clockwise airfoil segments at clockwise and counter-clockwise ends of the annular base, each of the composite airfoils including circumferentially adjacent ones of the clockwise and counter-clockwise airfoil segments, a flowpath shell circumferentially disposed around the segmented airfoil ring and trapping the annular bases between the flowpath shell and the retention ring, and the composite airfoils extending through slots in the flowpath shell.